The ISA's Central data Repository

SEADATA

Submarine Vents: brief description and associated information

DEPCAT	LOCNAME	LONG.	LAT.	LOCAREA	TECTONIC_SETTING	DEPTYPE	DEPTH	DESCRIPTION	REFS
PMS	ATLANTIS II DEEP	38.083	21.367	RED SEA, ATLANTIS II AREA	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS AND POLYMETALLIC SULFIDES (ACTIVE)	2,000	BRINE POOL & LARGE STRATIFORM DEPOSIT OF METALLIFEROUS SEDIMENT COMPOSED OF LAYERED FE OXIDE MUDS, SULFIDE & SULFATE FACIES SEDIMENTS, AND MANGANIFEROUS MUDS (94 MILLION TONNES PROVEN RESERVES)	HENDRICKS ET AL. (1969), BACKER & RICHTER (1973), SCHOELL & HARTMANN (1973) MUSTAFA ET AL. (1984), OUDIN (1987),
PMS	KEBRIT DEEP	36.277	24.723	RED SEA (NORTHERN)	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS & MINOR POLYMETALLIC SULFIDES (ACTIVE)	1,590	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS, INCLUDING MINOR SULFIDE-RICH VENTS	BACKER & SCHOELL (1972), BIGNELL ET AL. (1976), BLUM & PUCHELT (1991), PUCHELT AND STOFFERS (1997), SCHOLTEN ET AL.
PMS	ZABARGAD FRACTURE ZONE	37.406	23.367	RED SEA (CENTRAL)	OCEANIC RIFT (EARLY OPENING)	MASSIVE SULFIDE & METALLIFEROUS SEDIMENT (INACTIVE)	2,000	FE OXIDE AND FE CARBONATE MUDS WITH MINOR MASSIVE PYRITE	BONATTI ET AL. (1985)
PMS	SHABAN DEEP	35.350	26.225	RED SEA (NORTHERN)	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS & MINOR POLYMETALLIC SULFIDES (ACTIVE)	1,590	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS, INCLUDING MINOR SULFIDE-RICH CRUSTS ON THE SEDIMENT	PUCHELT & STOFFERS (1997)
PMS	MESO ZONE, RODRIGUEZ TRIPLE JUNCTION (SONNE FIELD, JX AREA)	69.242	-22.393	CENTRAL INDIAN RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	3,300	LARGE 1500 X 400 M MINERALIZED ZONE WITHIN PREVIOUSLY NAMED JX AREA, THREE MAIN FIELDS (INCLUDING NE FIELD, SONNE FIELD, AND SE FIELD) COLLECTIVELY KNOWN AS THE MESO ZONE	HERZIG & PLUGER (1988), HALBACH (1994). MUENCH ET AL. (1996), HALBACH ET AL. (1998), MUENCH ET AL. (1999)
PMS	EX/FX,CENTRAL INDIAN RIDGE	68.700	-21.500	CENTRAL INDIAN RIDGE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME, SEDIMENTS	3,000	HYDROTHERMAL PLUME, TEMPERATURE ANOMALY, HYDROTHERMAL SEDIMENTS, ALTERED BASALTS	HERZIG & PLUGER (1988)
PMS	KAIREI FIELD, HAKUKO KNOLL, RODRIGUEZ TRIPLE JUNCTION	70.400	-25.320	CENTRAL INDIAN RIDGE	MID-OCEAN RIDGE	OFF-AXIS POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,450	SEVEN ACTIVE VENT SITES INCLUDING BLACK SMOKER COMPLEXES OVER 10 M HIGH, 365^oC MAX TEMPERATURE, ON WALL OF RIFT VALLEY (1800 M ABOVE VALLEY FLOOR), FIELD IS 100-120 M LONG, 80-90 M WIDE	HASHIMOTO ET AL. (2001), VON DAMM ET AL. (2001), HUMPHRIS ET AL. (2001)
PMS	EDMOND FIELD, RODRIGUEZ TRIPLE JUNCTION	69.600	-23.880	CENTRAL INDIAN RIDGE	MID-OCEAN RIDGE	OFF-AXIS POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	3,290	ACTIVE BLACK SMOKERS 382^oC, MASSIVE SULFIDES AND RELICT CHIMNEYS, FIELD 6 KM FROM VALLEY FLOOR, FIELD IS 100-120 M LONG, 80-90 M WIDE, MORE ABUNDANT FE-OXIDE GOSSAN THAN KAIREI FIELD	VON DAMM ET AL. (2001), HUMPHRIS ET AL. (2001), VAN DOVER (unpublished)
PMS	MT JOURDANNE, SOUTWEST INDIAN RIDGE	63.933	-27.850	SOUTHWEST INDIAND RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	2,960	PIPE ORGAN-LIKE SULFIDE CHIMNEYS ON TOP OF AXIAL VOLCANIC RIDGE	MUENCH ET AL (1999)
PMS	LENA TROUGH	-4.000	81.300	NORTHERN MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC SULFIDE (INACTIVE)		DREDGED MASSIVE SULFIDE IN PERIDOTITE, NUMEROUS HYDROTHERMAL PLUMES	AMORE (2001), MICHAEL ET AL. (2001), EDMONDS ET AL. (2001)
PMS	AURORA FIELD, NORTHERN GAKKEL RIDGE	-6.000	82.800	NORTHERN MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC SULFIDE (INACTIVE)		DREDGED MASSIVE SULFIDE, SULFIDE-IMPREGNATED GREENSTONES, EPIDOSITES, NUMEROUS HYDROTHERMAL PLUMES	AMORE (2001), MICHAEL ET AL. (2001), EDMONDS ET AL. (2001)
PMS	NORTHERN GAKKEL RIDGE	30.000	86.000	NORTHERN MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC SULFIDE (INACTIVE)		DREDGED MASSIVE SULFIDE, SULFIDE-IMPREGNATED GREENSTONES, EPIDOSITES, NUMEROUS HYDROTHERMAL PLUMES	AMORE (2001), MICHAEL ET AL. (2001), EDMONDS ET AL. (2001)
PMS	NORTHERN KOLBEINSEY RIDGE			NORTHERN MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC SULFIDE (INACTIVE)		SMALL RELICT SULFIDE CHIMNEY	UNIVERSITY OF BERGEN, NORWAY
PMS	GRIMSEY HYDROTHERMAL FIELD	-17.650	66.607	MID-ATLANTIC RIDGE, ICELAND PLATEAU	MID-OCEAN RIDGE	ANHYDRITE CHIMNEYS & MOUNDS (Active)	400	HIGH-TEMPERATURE 248-251^oC VENTS (BOILING), MASSIVE ANHYDRITE CHIMNEYS AND MOUNDS	HANNINGTON ET AL. (2001), BOTZ ET AL. (1999), SCHOLTEN ET AL. (1999)
PMS	MENEZ GWEN	-31.525	37.842	MID-ATLANTIC RIDGE, AZORES HOT SPOT	RIDGE-HOTSPOT INTERSECTION	POLYMETALLIC SULFIDES (ACTIVE)	850	HIGH-TEMPERATURE VENTS (278^oC) AND MASSIVE SULFIDES (POSSIBLE PHASE SEPARATION)	ONDREAS ET AL. (1996), FOUQUET ET AL. (1994), FOUQUET ET AL. (1995)
PMS	LUCKY STRIKE	-32.273	37.293	MID-ATLANTIC RIDGE, AZORES	AXIAL SEAMOUNT	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	1,600	ACTIVE SULFIDE DEPOSIT (320^oC), SURROUNDED BY LAVA LAKE AT SUMMIT OF AXIAL VOLCANO (BOILING VENTS)	FAZAR (1993), LANGMUIR ET AL. 1993), HUMPHRIS ET AL. (1993), LANGMUIR ET AL. (1997), BRAY ET AL. (1996), KLINKHAMMER ET AL. (1995)
PMS	BROKEN SPUR	-43.172	29.170	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	3,050	ACTIVE SULFIDE DEPOSIT (360-364^oC) ON NEOVOLCANIC RIDGE ALONG AXIS OF RIFT VALLEY 150 X 60 M	MURTON ET AL. (1993), ELDERFIELD ET AL. (1993), JAMES & PALMER (1994), MURTON ET AL. (1995), DUCKWORTH ET AL. (1995)
PMS	RAINBOW HYDROTHERMAL FIELD	-33.902	36.230	MID-ATLANTIC RIDGE	RIDGE-TRANSFORM INTERSECTION	POLYMETALLIC MASSIVE SULFIDE (ACTIVE)	2,300	ACTIVE HIGH-TEMPERATURE VENTS (360^oC) AND MASSIVE SULFIDES SITUATED ON SERPENTINIZED PERIDOTITE	GERMAN ET AL. (1996A)
PMS	ACTIVE MOUND, TAG HYDROTHERMAL FIELD	-44.827	26.137	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	3,650	LARGE ACTIVE SULFIDE DEPOSITS, METALLIFEROUS SEDIMENTS, FE OXIDE GOSSANS, LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS, AND ASSOCIATED FE-MN CRUSTS (250 M X 200 M APPROX. EXPLORED DIMENSION), DRILLED IN 1995	RONA ET AL. (1986), THOMPSON ET AL. (1988), RONA ET AL. (1993a)
PMS	MIR ZONE, TAG HYDROTHERMAL FIELD	-44.807	26.145	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	3,500	LARGE INACTIVE SULFIDE DEPOSITS, METALLIFEROUS SEDIMENTS, FE OXIDE GOSSANS, FE OXIDE AND SILICA CHIMNEYS, AND ASSOCIATED FE-MN CRUSTS (UP TO 200 M EXPLORED DIMENSION)	RONA ET AL (1993a,b)
PMS	ALVIN ZONE, TAG HYDROTHERMAL FIELD	-44.815	26.158	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	3,500	LARGE INACTIVE SULFIDE DEPOSITS, METALLIFEROUS SEDIMENTS, FE OXIDE GOSSANS, FE OXIDE AND SILICA CHIMNEYS, AND ASSOCIATED FE-MN CRUSTS (UP TO 200 M EXPLORED DIMENSION)	RONA ET AL. (1993 a,b), RONA ET AL. (1998)
PMS	24^o30 N, MID-ATLANTIC RIDGE	-46.153	24.500	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC SULFIDES & GOSSAN (ACTIVE & INACTIVE)	3,900	ACTIVE SULFIDE DEPOSITS, METALLIFEROUS SEDIMENTS, AND FE OXIDE GOSSANS NEAR CENTER OF RIFT VALLEY	SUDARIKOV ET AL. (1990)
PMS	SNAKEPIT HYDROTHERMAL FIELD	-44.950	23.368	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	3,500	ACTIVE SULFIDE DEPOSITS, HIGH-TEMPERATURE SMOKES (345^oC), METALLIFEROUS SEDIMENTS, FE OXIDE GOSSANS, AND LOW-TEMPERATURE FE-MN CRUSTS (UP TO 100 M EXPLORED DIMENSION) ALONG TOPOGRAPHIC HIGH AT CENTER OF RIFT VALLEY	RONA ET AL. (1986), THOMPSON ET AL. (1988), FOUQUET ET AL. (1993), KASE ET AL. (1990), HONNOREZ ET AL. (1990)
PMS	15^o N, MID-ATLANTIC RIDGE	-44.900	14.917	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	MASSIVE SULFIDES (NOT DESCRIBED)	3,500	MASSIVE SULFIDES (UNDESCRIBED)	EBERHART ET AL. (1988), KRASNOV ET AL. (1995)
PMS	14^o34N, MID-ATLANTIC RIDGE	-44.978	14.752	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDE (POSSIBLY ACTIVE)	3,000	SEVERAL LARGE SULFIDE DEPOSITS, METALLIFEROUS SEDIMENTS, FE OXICE GOSSANS, AND ASSOCIATED FE-MN CRUSTS (UP TO 200 M EXPLORED DIMENSION)	KRASNOV ET AL. (1994)
PMS	14^o45 N LOGATCHEV FIELD, MID-ATLANTIC RIDGE	-44.978	14.752	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (POSSIBLY ACTIVE)	2,640-3,000	SEVERAL LARGE SULFIDE DEPOSITS, METALLIFEROUS SEDIMENTS , FE OXIDE GOSSANS , AND ASSOCIATED FE-MN CRUSTS (UP TO 200 M EXPLORED DIMENSION), ACTIVE HYDROTHERMAL MOUND (200 X 150 M), SIX LARGE SULFIDE MOUNDS (160 X 80 M), UP TO 10 SMALLER MOUNDS (20 X 60 M), ACTIVE BLACK SMOKERS AND DIFFUSE VENTING	KRASNOV ET AL. (1995), BATUYEV ET AL. (1994), GEBRUK ET AL. (1997), CHERKASHEV ET AL., MOZGOVA ET AL. (1999)
PMS	PALINURO SEAMOUNT	14.845	39.083	AEOLIAN ARC, TYRRHENIAN SEA	BACK-ARC ARC VOLCANO	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	600	SEVERAL DEPOSITS OF PYRITE-BARITE, CU SULFIDES IN SEDIMENTS FROM SUMMIT CALDERAS OF SUBMERGED VOLCANO, AEOLIAN ARC	MINNITI & BONAVIA (1984), PUCHELT AND LASCHECK (1986), TUFAR (1991), STUEBEN ET AL. (1996)
PMS	PANAREA SEAMOUNT	15.067	38.617	AEOLIAN ARC, TYRRHENIAN SEA	ISLAND ARC VOLCANO	POLYMETALLIC SULFIDES	80	PYRITE-SPHALERITE CRUSTS AND SULFIDE CEMENTED VOLCANICLASTIC SEDIMENTS WITH BARITE	GAMBERI ET AL.
PMS	SOUTHERN EXPLORER RIDGE	-129.702	49.750	NORTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	1,850	LARGE ACTIVE SULFIDE DEPOSITS, METALLIFEROUS SEDIMENTS, FE OXIDE GOSSANS, LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS, AND ASSOCIATED FE-MN CRUSTS (250 M X 200 M APPROX. EXPLORED DIMENSION), 25-310^oC VENTS	SCOTT ET AL. (1990), TUNNICLIFFE ET AL. (1986), HANNINGTON ET AL. (1991)
PMS	HIGH-RISE FIELD, ENDEAVOUR RIDGE	-129.080	47.967	NORTHERN JUAN DE FUCA	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	2,150	LARGE ACTIVE SULFIDE DEPOSITS IN THE RIFT VALLEY OF THE ENDEAVOUR SEGMENT, JUAN DE FUCA RIDGE (NUMEROUS 20-30 M HIGH STRUCTURES), 500 M DIAMETER VENTING AREA, VENTING UP TO 343^oC	ROBIGOU ET AL. (1993), DELANEY ET AL. (1992), KELLEY ET AL. (2001)
PMS	CLAM BED, ENDEAVOUR RIDGE	-129.105	47.963	NORTHERN JUAN DE FUCA	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	2,200	SMALL VENT FIELDS WITH ABUNDANT VENT-FAUNA IN RIFT VALLEY OF THE ENDEAVOUR SEGMENT, JUAN DE FUCA RIDGE	DELANEY ET AL. (1992), KELLEY ET AL. (2001)
PMS	MAIN FIELD, ENDEAVOUR RIDGE	-129.108	47.950	NORTHERN JUAN DE FUCA	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	2,200	LARGE ACTIVE SULFIDE DEPOSITS WITH MINOR METALLIFEROUS SEDIMENTS AND FE-OXIDE GOSSANS IN THE RIFT VALLEY OF THE ENDEAVOUR SEGMENT, JUAN DE FUCA RIDGE (NUMEROUS 20-30 M HIGH STRUCTURES), 150 X 150 M, VENTING UP TO 379-380^oC FROM 21 MAIN STRUCTURES	DELANEY ET AL. (1992), KARSTEN ET AL. (1984), JOHNSON & DELANEY (1984), KELLEY ET AL. (2001)
PMS	MOTHRA VENT FIELD ENDEAVOUR RIDGE	-129.133	47.926	NORTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	2,200	LARGE ACTIVE SULFIDE DEPOSITS IN THE RIFT VALLEY OF THE ENDEAVOUR SEGMENT, JUAN DE FUCA RIDGE (NUMEROUS 20-30 M HIGH STRUCTURES), 500 M DIAMETER VENTING AREA, FEW BLACK SMOKERS VENTING UP TO 300oC	HAMMOND ET AL. (1984), TIVEY & DELANEY (1986), KELLEY ET AL. (2001)
PMS	SALTY DAWG FIELD, ENDEAVOUR RIDGE	-129.070	47.975	NORTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	2,200	LARGE FIELD WITH UP TO 25 STRUCTURES (UP 25 M TALL), ABUNDANT VENT-FAUNA IN RIFT VALLEY OF THE ENDEAVOUR SEGMENT, JUAN DE FUCA RIDGE, VENTING UP TO 296^oC	ROBIGOU ET AL. (1993), DELANEY ET AL. (1992), KELLEY ET AL. (2001)
PMS	SASQUATCH FIELD, ENDEAVOUR RIDGE	-129.070	47.999	NORTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	2,200	LARGE VENT FIELD (UP TO 200 M STRIKE) WITH VENTING FROM A FEW LARGE STRUCTURES (284^oC) IN RIFT VALLEY OF THE ENDEAVOUR SEGMENT, JUAN DE FUCA RIDGE	KELLEY ET AL. (2001)
PMS	AREA OF ACTIVE VENTING, MIDDLE VALLEY	-128.708	48.457	NORTHERN JUAN DE FUCA RIDGE	SEDIMENTED RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	2,400	LARGE ACTIVE SULFIDE DEPOSITS WITHIN TURBIDITIC SEDIMENTS IN A BURIED RIFT ADJACENT TO ENDEAVOUR RIDGE (UP TO 400 M EXPLORED DIMENSION), 276^oC ACTIVE VENTS, METAL-POOR	DAVIS ET AL. (1987), GOODFELLOW & BLAISE (1988)
PMS	BENT HILL, MIDDLE VALLEY	-128.678	48.450	NORTHERN JUAN DE FUCA RIDGE	SEDIMENTED RIDGE	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	2,400	LARGE INACTIVE SULFIDE DEPOSITS WITHIN TURBIDITIC SEDIMENTS IN A BURIED RIFT ADJACENT TO ENDEAVOUR RIDGE (SEVERAL SULFIDE OUTCROPS UP TO 100 M IN DIAMETER), DRILLED 1996 (LEG169)	AMES ET AL. (1993)
PMS	ODP MOUND, MIDDLE VALLEY	-128.678	48.450	NORTHERN JUAN DE FUCA	SEDIMENTED RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,400	LARGE MASSIVE SULFIDE MOUND, PARTIALLY BURIED BY SEDIMENT, DRILLED 1996 (LEG169) ESTIMATED 15 MILLION TONNES	FOUQUET ET AL.
PMS	CASM SITE, AXIAL SEAMOUNT	-130.030	45.990	CENTRAL JUAN DE FUCA RIDGE	AXIAL SEAMOUNT	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,580	SMALL VENT FIELD WITH ACTIVE SULFIDE DEPOSITS AND LOW-TEMPERATURE FE OXIDE, BARITE AND SILICA CHIMNEYS IN THE CALDERA OF AN AXIS SEAMOUNT ON THE CENTRAL JUAN DE FUCA RIDGE	HANNINGTON & SCOTT (1988), EMBLEY ET AL. (1990)
PMS	ASHES VENT FIELD, AXIAL SEAMOUNT	-130.017	45.933	CENTRAL JUAN DE FUCA RIDGE	AXIAL SEAMOUNT	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,540	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS AND LOW-TEMPERATURE FE-OXIDE AND SILICA CHIMNEYS IN THE CALDERA OF AN AXIS SEAMOUNT ON THE CENTRAL JUAN DE FUCA RIDGE, 330^oC VENTS WITH ABUNDANT DIFFUSE VENTING	ASHES EXPEDITION (1986), RONA & TRIVETT (1992)
PMS	NORTHERN CLEFT SEGMENT	-130.222	44.980	SOUTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,250	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS AND LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS IN THE AXIAL RIFT OF THE JUAN DE FUCA RIDGE (1986 MEGAPLUME)	CHADWICK ET AL. (1991), EMBLEY ET AL. (1991)
PMS	SOUTHERN CLEFT SEGMENT (SOUTHERN SYMMETRICAL SITE)	-130.367	44.650	SOUTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS AND LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS IN THE AXIAL RIFT OF THE JUAN DE FUCA RIDGE (1987 MEGAPLUME)	BAKER ET AL. (1994)
PMS	SOUTHERN JUAN DE FUCA RIDGE (PLUME SITE)	-130.367	44.650	SOUTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,200	MULTIPLE SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS AND LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS IN THE AXIAL RIFT OF THE JUAN DE FUCA RIDGE (DISCONTINUOUS HYDROTHERMAL ACTIVITY ALONG 20 KM OF AXIAL DEPRESSION)	KOSKI ET AL. (1984), USGS STUDY GROUP (1986), NORMARK ET AL. (1982), BISCHOFF ET AL. (1983), EMBLEY ET AL. (1983), PARADIS ET AL. (1988)
PMS	NORTHERN GORDA RIDGE (SEA CLIFF VENT FIELD)	-126.708	42.755	NORTHERN GORDA RIDGE	MID-OCEAN RIDGE	OFF-AXIS POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,700	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS AND HYDROTHERMAL FE-MN OXIDE CRUSTS ON THE WALL OF GORDA RIDGE AXIAL VALLEY (247-304^oC VENTS WITH CLEAR FLUIDS), NORTHEAST OF 1996 ERUPTIONS AND EVENT PLUMES IN VALLEY, MAINLY ANHYDRITE CHIMNEYS WITH MINOR SULFIDES	RONA ET AL. (1990), DEEP SEA RESEARCH (1998), McCLAIN ET AL. (2001)
PMS	ESCANABA TROUGH	-127.500	41.000	SOUTHERN GORDA RIDGE	SEDIMENTED RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE AND INACTIVE)	3,300	TWO LARGE ACTIVE SULFIDE DEPOSITS (NESCA, SESCA) WITHIN TURBIDITIC SEDIMENTS IN THE BURIED AXIAL RIFT OF THE SOUTHERN GORDA RIDGE (UP TO 250 M EXPLORED DIMENSIONS), 108^oC AND 220^oC ALKALI-RICH VENTS AND LOW-TEMPERATURE VENTING, ODP DRILLING LEG 169, 1996	KOSKI ET AL. (1988), MORTON ET AL. (1987), MORTON ET AL. (1990), ZIERENBERG ET AL. (1993), ZIERENBERG ET AL. (2001)
PMS	SOUTHERN TROUGH, GUAYMAS BASIN	-111.533	27.300	GULF OF CALIFORNIA	SEDIMENTED RIFT	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	2,000	LARGE VENT FIELDS WITH SMALL ACTIVE SULFIDE DEPOSITS WITHIN TURBIDITIC AND PELAGIC SEDIMENTS IN THE SOUTHERN TROUGH OF THE GUAYMAS BASIN, UP TO 359^oC VENTS	PETER & SCOTT (1988), KOSKI ET AL. (1985)
PMS	GALAPAGOS RIFT, 86^oW	-85.833	0.750	GALAPAGOS RIFT	GALAPAGOS SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	2,500	SEVERAL LARGE INACTIVE SULFIDE DEPOSITS, FE OXIDE GOSSANS, LOW-TEMPERATURE (<30^oC) FE OXIDE AND SILICA CHIMNEYS, AND ASSOCIATED HYDROTHERMAL FE-MN CRUSTS (150 M APPROX. EXPLORED DIMENSIONS) IN SOUTHERN RIFT	CORLISS ET AL. (1979), EDMOND ET AL. (1979), CRANE & BALLARD (1980), EMBLEY ET AL. (1988), HERZIG ET AL. (1988), BALLARD ET AL. (1998), KNOTT ET AL. (1995)
PMS	GREEN SEAMOUNT	-109.283	20.803	EAST PACIFIC RISE, LARSON SEAMOUNTS	OFF-AXIS SEAMOUNT	FE-OXIDE & SILICA DEPOSITS WITH MASSIVE SULFIDE (INACTIVE)	2,000	FE OXIDE SEDIMENTS, GOSSANS, RELICT SULFIDE CHIMNEYS, AND FE-MN CRUSTS ON A SMALL OFF-AXIS SEAMOUNTS ADJACENT TO THE EAST PACIFIC RISE	ALT (1988a,b)
PMS	21^oN, EAST PACIFIC RISE	-109.083	20.833	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE, BOTH HIGH-TEMPERATURE (>350^oC) AND LOW-TEMPERATURE (<20^oC) VENTING	CYAMEX (1979), HEKINIAN ET AL. (1980), BISCHOFF ET AL. (1983), ZIERENBERG ET AL. (1984)
PMS	14^oN, EAST PACIFIC RISE	-104.367	14.150	EAST PACIFIC RISE	OFF-AXIS SEAMOUNT	POLYMETALLIC MASSIVE SULFIDES AND GOSSANS (INACTIVE)	2,600	SMALL SULFIDE DEPOSITS AND ASSOCIATED FE OXIDE GOSSANS ON A SMALL OFF-AXIS SEAMOUNT ADJACENT TO THE EAST PACIFIC RISE	VANKO ET AL. (1991)
PMS	13^oN, EAST PACIFIC RISE, SE SEAMOUNT	-103.860	12.800	EAST PACIFIC RISE	OFF-AXIS SEAMOUNT	POLYMETALLIC MASSIVE SULFIDES (ACTIVE & INACTIVE)	2,400	NUMEROUS LARGE ACTIVE AND INACTIVE SULFIDE DEPOSITS, FE OXIDE GOSSANS, AND LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS ON THE RIDGE AND ADJACENT SEAMOUNTS (UP TO 200 M X 800 M EXPLORED DIMENSIONS)	HEKINIAN & FOUQUET (1985), GENTE ET AL. (1986), FOUQUET ET AL. (1988), FOUQUET ET AL. (1996)
PMS	13^oN (12^o50N), EAST PACIFIC RISE, AXIAL VENTS (BRYCE CANYON, CHAIN SITES)	-103.950	12.842	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE (MINOR ASSOCIATED FE AND MN OXIDE PRECIPITATES)	FOUQUET ET AL. (1996), MOSS & SCOTT (1996)
PMS	13^oN (12^o42N), EAST PACIFIC RISE, MARGINAL HIGH	-103.916	12.709	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS ON THE MARGIN OF THE AXIAL RIFT OF THE EAST PACIFIC RISE (MINOR ASSOCIATED FE AND MN OXIDE PRECIPITATES)	FOUQUET ET AL. (1996)
PMS	11^o32N, EAST PACIFIC RISE, 87D1 SEAMOUNT	-103.559	11.533	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC SULFIDES & FE-MN OXIDE DEPOSITS (INACTIVE)	2,090	MINOR POLYMETALLIC SULFIDES AND SILICA AND FE-MN OXIDE DEPOSITS	KURIYAMA ET AL. (1994)
PMS	11^oN, EAST PACIFIC RISE	-103.677	10.927	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,500	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE (MINOR ASSOCIATED FE AND MN OXIDE PRECIPITATES)	McCONACHY ET AL. (1986), McCONACHY (1988), ARGO-RISE GROUP (1998)
PMS	9-10^oN, EAST PACIFIC RISE	-104.233	9.717	EAST PACIFIC RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	2,550	MEGAPLUME (1991), MANY ACTIVE SITES BETWEEN 9^o45'N AND 9^o50'N	HAYMON ET AL. (1991), HAYMON ET AL. (1993), LISITSYN ET AL. (1999), BRAY ET AL (1999)
PMS	9-10^oN, EAST PACIFIC RISE	-104.233	9.675	EAST PACIFIC RISE	AXIAL SEAMOUNT	HYDROTHERMAL PLUME	2,500	MEGAPLUME (1991), MANY ACTIVE SITES BETWEEN 9^o45'N AND 9^o50'N	BAKER ET AL. (1994), BRAY ET AL. (1999)
PMS	9-10^oN, EAST PACIFIC RISE	-104.217	9.280	EAST PACIFIC RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	2,580	MEGAPLUME (1991), MANY ACTIVE SITES BETWEEN 9^o45'N AND 9^o50'N	HAYMON ET AL. (1991), BRAY ET AL. (1999)
PMS	9-10^oN, EAST PACIFIC RISE	-104.250	8.883	EAST PACIFIC RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	2,600	ONE OF SEVERAL ACTIVE SITES BETWEEN 9^o45'N AND 9^o50'N	BAKER ET AL. (1994)
PMS	3^o55'N, EAST PACIFIC RISE	-102.200	3.917	EAST PACIFIC RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	2,600	HYDROTHERMAL PLUME	LONSDALE (1989)
PMS	1^o44'N, AHA VENT FIELD, EAST PACIFIC RISE	-102.283	1.733	EAST PACIFIC RISE	MID-OCEAN RIDGE	ACTIVE VENTS (NOT DESCRIBED)	2,850	ACTIVE VENTS AND VENT-SPECIFIC FAUNA (PHOTOGRAPHED BUT NOT DESCRIBED)	SHANK ET AL. (2000)
PMS	7^o00'S, EAST PACIFIC RISE	-107.550	-7.000	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	BLACK SMOKER VENTS (NOT DESCRIBED)	DILL ET AL. (1992)
PMS	7^o30 S, EAST PACIFIC RISE	-107.816	-7.492	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE	MARCHIG ET AL (1993), MARCHIG ET AL. (1997)
PMS	14^o00'S, EAST PACIFIC RISE	-112.583	-14.000	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	BLACK SMOKER VENTS (NOT DESCRIBED)	FUJIOAK ET AL. (1995)
PMS	15^o00'S, EAST PACIFIC RISE	-112.800	-15.000	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	BLACK SMOKER VENTS (NOT DESCRIBED)	DILL ET AL. (1992)
PMS	16^o40 S, EAST PACIFIC RISE	-113.000	-16.717	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE	MARCHIG ET AL (1993), MARCHIG ET AL. (1997)
PMS	17^o27'S, EAST PACIFIC RISE	-113.217	-17.450	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	MULTIPLE SMALL VENT FIELDS FROM 17^o24'S TO 17^o27'S	RENARD ET AL. (1985), BRAY ET AL. (1999)
PMS	17^o30 S, EAST PACIFIC RISE	-113.000	-17.433	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE, MULTIPLE SMALL VENT FIELDS FROM 17^o24'S TO 17^o27'S	FOUQUET ET AL (1993), BRAY ET AL. (1999), TANAKA & URABE (1996)
PMS	18^o00'S, EAST PACIFIC RISE	-113.417	-18.000	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	NUMEROUS SITES BETWEEN 18o24-26'S	AUZENDE ET AL. (1994), GRADY & VON DAMM (1999)
PMS	18^o30 S, EAST PACIFIC RISE	-113.383	-18.417	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,650	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE, NUMEROUS SITES BETWEEN 18^o24-26'S	BACKER ET AL. (1985), TUFAR ET AL. (1985), MARCHIG ET AL. (1988), MARCHIG ET AL. (1990), CHARLOU ET AL. (2001), TANAKA & URABE (1996)
PMS	20^o00 S, EAST PACIFIC RISE	-113.500	-20.000	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	3,000	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE	FRANCHETEAU & BALLARD (1983), BALLARD ET AL. (1981), RENARD ET AL. (1985), CHARLOU ET AL (1996)
PMS	20^o50'S, EAST PACIFIC RISE	-114.017	-20.833	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	BLACK SMOKER VENTS (NOT DESCRIBED)	DILL ET AL. (1992)
PMS	21^o30 S, EAST PACIFIC RISE	-114.292	-21.433	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,800	ACTIVE SULFIDE CHIMNEYS 9UP TO 30 M) IN THE AXIAL RIFT OF THE EAST PACIFIC RISE, ONE OF NUMEROUS SITES BETWEEN 21^o24-26'S	BACKER ET AL. (1985), MARCHIG ET AL. (1988), MARCHIG ET AL. (1990), TUFAR ET AL.(1985), MARCHIG & GUNDLACH (1987), KRASNOV ET AL. (1992), RENARD ET AL. (1985), KRASNOV ET AL. (1992), GRADY & VON DAMM (1999)
PMS	21^o50 S, EAST PACIFIC RISE	-114.500	-21.833	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE	FOUQUET ET AL. (1993b)
PMS	22^o30'S, EAST PACIFIC RISE	-114.367	-22.500	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	BLACK SMOKER VENTS (NOT DESCRIBED)	DILL ET AL. (1992)
PMS	22^o58'S, EAST PACIFIC RISE	-111.650	-22.980	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,600	BLACK SMOKER VENTS (NOT DESCRIBED)	GALLO ET AL. (1984)
PMS	23^o30 S, EAST PACIFIC RISE	-115.567	-23.533	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE	MARCHIG & GUNDLACH (1987)
PMS	26^o10 S, EAST PACIFIC RISE	-112.613	-26.205	EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC SULFIDES (ACTIVE)	2,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS IN THE AXIAL RIFT OF THE EAST PACIFIC RISE	BACKER ET AL. (1985), MARCHIG ET AL. (1988), MARCHIG & GUNDLACH (1987)
PMS	EASTER MICROPLATE	-111.650	-22.980	EASTER MICROPLATE, SOUTHEAST PACIFIC	MID-OCEAN RIDGE (SEAMOUNT AT TIP OF PROPAGATING RIFT)	SULFIDE DEPOSIT WITH BLACK SMOKERS (ACTIVE)	2,200	SULFIDE DEPOSIT WITH BLACK SMOKERS (NOT DESCRIBED)	FRANCHETEAU (in RONA & SCOTT, 1993), GALLO ET AL. (1994)
PMS	PITO SEAMOUNT, EASTER MICROPLATE	-113.600	-22.317	EASTER MICROPLATE	MID-OCEAN RIDGE, MICROPLATE	POLYMETALLIC MASSIVE SULFIDES (NOT DESCRIBED)	<2,000	POLYMETALLIC MASSIVE SULFIDES (NOT DESCRIBED)	VERATI ET AL. (1999)
PMS	37^o40'S FIELD, PACIFIC-ANTARCTIC RIDGE	-110.783	-37.667	SOUTHERN EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,200	SMALL FIELD OF HIGH-TEMPERATURE CHIMNEYS AND SPIRES	STOFFERS ET AL. (2002)
PMS	37^o48'S FIELD, PACIFIC-ANTARCTIC RIDGE	-110.783	-37.800	SOUTHERN EAST PACIFIC RISE	MID-OCEAN RIDGE	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,200	SMALL FIELD OF HIGH-TEMPERATURE CHIMNEYS AND SPIRES	STOFFERS ET AL. (2002)
PMS	BRANSFIELD STRAIT	-62.200	-57.267	ANTARCTIC PENINSULA	BACK-ARC VOLCANO	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	1,070	SEMIMASSIVE BARITE-PYRITE-SPHALERITE IN SEDIMENTS WITHIN SUMMIT CALDERA OF HOOK RIDGE VOLCANO, 49^oC TEMPERATURES IN RECOVERED SEDIMENT SAMPLES	KLINKHAMMER ET AL. (1999)
PMS	KITA-BAYONNAISE CALDERA	139.850	32.100	IZU-BONIN ARC (SHICHITO-IWOJIMA RIDGE)	INTRA-OCEANIC ARC VOLCANO	POLYMETALLIC SULPHIDES IN MINERALIZED TUFF (INACTIVE)	1,300	POLYMETALLIC SULPHIDES AND BARITE IN ALTERED TUFF	IIZAZA ET AL (1992)
PMS	MYOJINSHO CALDERA	130.983	31.883	IZU-BONIN ARC (SHICHITO-IWOJIMA RIDGE)	INTRA-OCEANIC ARC VOLCANO	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	900	SMALL DEPOSIT OF MASSIVE BARITE AND POLYMTALLIC SULFIDE TOGETHER WITH DISSEMINATED PYRITE QUARTZ-PYRITE STOCKWORK MINERALIZATION IN ALTERED LAVAS	IIZASA ET AL. (1992)
PMS	SUIYO SEAMOUNT	140.642	28.575	IZU-BONIN ARC (SHICHITO-IWOJIMA RIDGE)	INTRA-OCEANIC ARC VOLCANO	POLYMETALLIC SULFIDES (ACTIVE)	1,300	WIDESPREAD VENT FIELD WITH ACTIVE CHIMNEYS (230-311^oC), POLYMETALLIC SULFIDE, BARITE AND ANHYDRITE IN CALDERA OF ARC VOLCANO	KASUGA & KATO (1992), NAGAOKO ET AL. (1992), FUJIOKA ET AL. (1992), TSUNOGAI ET AL. (1994)
PMS	MINAMI-ENSEI KNOLLS, OKINANWA TROUGH	127.642	28.392	OKINAWA TROUGH	INTRA-CONTINENTAL BACK-ARC RIFT	POLYMETALLIC SULFIDES & BARITE (ACTIVE)	700	SMALL VENT FIELD OF SULFIDE AND BARITE CHIMNEYS (BOILING VENTS, 267-278^oC), ANHYDRITE CHIMNEYS VENTING CLEAR FLUID, BARITE-SULFIDE MOUND	CHIBA ET AL. (1992), NEDACHI ET AL. (1992), HALLBACH ET AL. (1993)
PMS	JADE SITE, IZENA CAULDRON	126.663	27.304	OKINAWA TROUGH	INTRA-CONTINENTAL BACK-ARC RIFT	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,300-1,550	ACTIVE SULFIDE DEPOSITS AND LOW-TEMPERATURE FE OXIDE, BARITE, AND SILICA CHIMNEYS IN THE CALDERA OF A SUBMERGED VOLCANO IN THE OKINAWA TROUGH BACK-ARC BASIN (100 M X 300 M APPROX. EXPLORED DIMENSIONS), 320^oC BLACK SMOKER, 220^oC CLEAR VENTS (BOILING VENTS	HALBACH ET AL. (1989), HALBACH ET AL. (1993), NAKAMURA ET AL. (1988)
PMS	18^oN, CENTRAL MARIANA TROUGH (ALICE SPRING)	144.683	18.217	MARIANA BACK-ARC	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	3,600	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS, LOW-TEMPERATURE FE OXIDE, BARITE, AND SILICA CHIMNEYS, AND ASSOCIATED FE AND MN DEPOSITS ON A SUBMERGED VOLCANO	KASTNER ET AL. (1987), CRAIG ET AL. (1987), LONSDALE & HAWKINS (1987), HANNINGTON (1989), MOORE & STAKES (1990)
PMS	ALICE SPRING FIELD, CENTRAL MARIANA TROUGH	144.500	18.200	MARIANA BACK-ARC	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	3,600	BARITE-SILICA CHIMNEYS, 287^oC CLEAR VENTS, HIGH pH & ALKALINITY	FRYER (1995)
PMS	CENTRAL MARIANA TROUGH	144.750	18.033	MARIANA BACK-ARC	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	3,675	SEVERAL ACTIVE CHIMNEYS, LOW MOUND OF HYDROTHERMAL PRECIPITATES	FRYER (1993)
PMS	13^oN, SOUTHERN MARIANA ARC	143.644	13.431	MARIANA BACK-ARC	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	3,000	SMALL VENT FIELD WITH ACTIVE SULFIDE-BEARING CHIMNEYS ON SEAMOUNT NEAR SPREADING CENTER	JOHNSON ET AL. (1993)
PMS	FORECAST VENT FIELD, MARIANA ARC	143.644	13.431	MARIANA ARC	INTRA-OCEANIC ARC	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,470	202^oC WHITE SMOKERS & MARCASITE CHIMNEYS	FRYER (1995)
PMS	SOUTHERN MARIANA TROUGH	143.917	13.400	MARIANA BACK-ARC	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)		ACTIVE VENTS (NOT DESCRIBED)	GAMO ET AL. (1989)
PMS	CENTRAL MANUS BASIN	150.168	-3.420	MANUS BASIN, BISMARCK SEA	BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	2,500	INACTIVE, MASSIVE SULFIDE DEPOSITS, FE OXIDE GOSSANS, LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS, AND FE-MN CRUSTS ON THE MANUS BACK-ARC SPREADING CENTER (UP TO 150 M EXPLORED DIMENSIONS)	BOTH ET AL. (1986), CRAIG ET AL. (1986), TUFAR (1990), LISITSYN ET AL. (1993)
PMS	CENTRAL MANUS BASIN, VIENNA WOODS	150.283	-3.167	MANUS BASIN, BISMARCK SEA	BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,500	ACTIVE BLACK SMOKERS (285-300^oC), MASSIVE SULFIDE DEPOSITS, FE OXIDE GOSSANS, LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS, AND FE-MN CRUSTS ON THE MANUS BACK-ARC SPREADING CENTER (UP TO 150 M EXPLORED DIMENSIONS)	TUFAR (1990), LISITIZIN ET AL. (1990)
PMS	EASTERN MANUS BASIN, PACMANUS & SUSU KNOLLS	151.670	-3.725	MANUS BASIN, BISMARCK SEA	BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,650	ACTIVE SULFIDE DEPOSITS, FE OXIDE GOSSANS, LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS, AND FE-MN CRUSTS ON THE MANUS BACK-ARC SPREADING CENTER (UP TO 150 M EXPLORED DIMENSIONS), DIFFUSE LOW-TEMPERATURE VENTS (<30^oC), HIGH-TEMPERATURE VENTS (245-268^oC)	BINNS & SCOTT (1993), SCOTT & BINNS (1995), MOSS & SCOTT (2001)
PMS	DESMOS CAULDRON	151.833	-3.717	EASTERN MANUS BASIN, BISMARCK SEA	BACK-ARC SPREADING CENTER	DISSEMINATED SULFIDES AND NATIVE SULFUR DEPOSITS (ACTIVE)	2,100	DEPOSITS OF DISSEMINATED PYRITE AND NATIVE SULFUR CEMENTING VOLCANICLASTIC SEDIMENTS IN SUBMARINE CALDERA ON SPREADING CENTER, EVENT PLUME	GAMO ET AL. (1993), SAKAI (1991)
PMS	KAIYO-LHOS VENT FIELD, NORTH FIJI BASIN	173.915	-16.991	NORTH FIJI BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,960	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS, FE OXIDE GOSSANS, LOW-TEMPERATURE FE OXIDE, SILICA AND ANHYDRITE CHIMNEYS IN THE NORTH FIJI BACK-ARC BASIN, 265-285^oC CLEAR FLUIDS, LOW SALINITY WITH PHASE SEPARATION	AUZENDE ET AL. (1990), URABE ET AL. (1990), AUZENDE ET AL. (1991), AUZENDE ET AL. (1992), BENDEL ET AL. (1993), ISHIBASHI ET AL. (1994)
PMS	WHITE LADY VENT FIELD, NORTH FIJI BASIN	173.917	-16.983	NORTH FIJI BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,960	SMALL VENT FIELDS WITH ACTIVE SULFIDE DEPOSITS, FE OXIDE GOSSANS, LOW-TEMPERATURE FE OXIDE, SILICA AND ANHYDRITE CHIMNEYS IN THE NORTH FIJI BACK-ARC BASIN, 265-285^oC CLEAR FLUIDS, LOW SALINITY WITH PHASE SEPARATION	AUZENDE (1990), AUZENDE ET AL. (1991), BENDEL ET AL. (1993), AUZENDE ET AL. (1992), URABE ET AL. (1990), ISHIBASHI ET AL. (1994)
PMS	SONNE99 FIELD, CENTRAL FIJI BASIN	-173.933	-16.950	NORTH FIJI BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,980	ACTIVE AND FOSSIL CHIMNEYS ON TOP OF SEVERAL MOUNDS, CLEAR LOW-TEMPERATURE FLUIDS (500 X 800 M), WESTERN RIFT OF VALLEY	HALBACH ET AL. (1995), HALBACH ET AL (1999), PAUL ET AL., (1996)
PMS	PERE LACHAISE FIELD, CENTRAL FIJI BASIN	-173.933	-16.950	NORTH FIJI BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,980	ACTIVE AND FOSSIL CHIMNEYS ON TOP OF SEVERAL MOUNDS, CLEAR LOW-TEMPERATURE FLUIDS (500 X 800 M), EASTERN RIFT OF VALLEY	HALBACH ET AL. (1995), HALBACH ET AL (1999), PAUL ET AL., (1996)
PMS	NORTHERN LAU BASIN, PAPATUA SITE	174.750	-15.283	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER		2,100	DREDGED SULFIDES	FOUQUET ET AL. (1991)
PMS	NORTHERN LAU BASIN, KINGS TRIPLE JUNCTION	-174.667	-15.333	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMATALLIC MASSIVE SULFIDES (INACTIVE)	2,000	WIDESPREAD VENT FIELDS WITH LOCAL ACTIVE SULFIDE DEPOSITS, AND NUMEROUS LOW-TEMPERATURE FE OXIDE AND SILICA CHIMNEYS	LISITSYN ET AL. (1992)
PMS	NORTHERN LAU BASIN, KINGS TRIPLE JUNCTION	-174.683	-15.383	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC SULFIDE CHIMNEY	2,100	FRAGMENTS OF FOSSIL CHIMNEY DREDGED	HAWKINS & HELU (1986)
PMS	WHITE CHURCH VENT FIELD, NORTHERN VALU FA RIDGE	-177.523	-21.961	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,850	LARGE, ACTIVE SULFIDE DEPOSITS, BARITE-SILICA CHIMNEYS, LOW-TEMPERATURE FE-OXIDES, AND ASSOCIATED FE-MN CRUSTS IN THE AXIAL RIFT OF THE VALU FA RIDGE, LAU BACK-ARC BASIN (100 M X 200 M APPROX. EXPLORED DIMENSIONS)	FOUQUET ET AL. (1990), FOUQUET ET AL. (1993), HERZIG ET AL. (1990), HERZIG ET AL. (1993)
PMS	VAI LILI VENT FIELD, CENTRAL VALU FA RIDGE	-177.524	-22.319	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,750	LARGE, ACTIVE SULFIDE DEPOSITS, BARITE-SILICA CHIMNEYS, LOW-TEMPERATURE FE-OXIDES, AND ASSOCIATED FE-MN CRUSTS IN THE AXIAL RIFT OF THE VALU FA RIDGE, LAU BACK-ARC BASIN (100 M X 200 M APPROX. EXPLORED DIMENSIONS), FAULT CONTROLLED DISCHARGE, 250-320^oC WHITE SMOKERS	FOUQUET ET AL. (1990), FOUQUET ET AL. (1993), HERZIG ET AL. (1990), HERZIG ET AL. (1993)
PMS	HINE HINA VENT FIELD, SOUTHERN VALU FA RIDGE	-177.614	-22.656	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,850	WIDESPREAD LOW-TEMPERATURE VENTING, INACTIVE SULFIDE CHIMNEYS, BARITE-SILICA CHIMNEYS, LOW-TEMPERATURE FE-OXIDES, AND ASSOCIATED FE-MN CRUSTS IN THE AXIAL RIFT OF THE VALU FA RIDGE, LAU BACK-ARC BASIN, LOW-TEMPERATURE (40^oC) MN CRUST AND SULFUR-CEMENTED HYALOCALSTITE	FOUQUET ET AL. (1990), FOUQUET ET AL. (1993), HERZIG ET AL. (1990), HERZIG ET AL. (1993)
PMS	CENTRAL LAU BASIN	-176.450	-18.600	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	2,000	ACTIVE HYDROTHERMAL VENTS AND SULFIDES (NOT DESCRIBED)	LISITSYN ET AL. (1992)
PMS	CLARK SEAMOUNT	177.841	-36.444	KERMADEC ARC-HAVRE TROUGH	ARC VOLCANO	POLYMETALLIC MASSIVE SULFIDES (INACTIVE)	950	SMALL BARITE-RICH CHIMNEY WITH MINOR PYRITIC SULFIDE	STOFFERS ET AL. (1999a), WRIGHT ET AL. (1998)
PMS	RUMBLE II WEST	178.542	-35.350	KERMADEC ARC-HAVRE TROUGH	ARC VOLCANO	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,300	SMALL SULFIDE CHIMNEYS (NOT DESCRIBED)	WRIGHT ET AL. (1998), DE RONDE ET AL. (1997)
PMS	BROTHERS SEAMOUNT	179.066	-34.866	KERMADEC ARC-HAVRE TROUGH	ARC VOLCANO	POLYMETALLIC MASSIVE SULFIDES (ACTIVE)	1,600	TWO SEPARATE AREAS OF ACTIVE VENTING IN SUMMIT CALDERA, NORTH WALL BLACK SMOKERS & SOUTH WALL SHIMMERING WATER	STOFFERS ET AL. (1999a), WRIGHT ET AL. (1998), WRIGHT ET AL. (1999)

LTH	DANAKIL DEPRESSION	42.583	11.500	AFAR RIFT	OCEANIC RIFT	FE-MN OXIDES, BARITE DEPOSITS	0	NOT DESCRIBED	BONATTI ET AL. (1972B)
LTH	KOLBEINSEY RIDGE	-18.717	67.092	MID-ATLANTIC RIDGE, ICELAND PLATEAU	MID-OCEAN RIDGE	SILICA-PYRITE (ACTIVE)	100	SMALL DEPOSIT OF FE AND MN OXIDES, BARITE, AMORPHOUS SILICA, AND PYRITE ON SUBMARINE VOLCANO AT NORTHERN EXTENSION OF NEOVOLCANIC ZONE	STEFANSSON (1983), OLAFSSON ET AL. (1990), SCHOLTEN ET AL. (1999)
LTH	SKJALFANDADJUP FIELD	-17.783	66.600	MID-ATLANTIC RIDGE, ICELAND PLATEAU	NEOVOLCANIC ZONE	SILICA-SULFATE-PYRITE (ACTIVE)	500	ACTIVE HYDROTHERMAL VENTS WITH DEPOSITS OF GYPSUM, ANHYDRITE, SILICA, AND PYRITE	JAKOBSSON ET AL. (pers. comm.)
LTH	EYJAFJAROARDJUP	-17.667	66.600	MID-ATLANTIC RIDGE, ICELAND PLATEAU	NEOVOLCANIC ZONE	SILICA-SULFATE-PYRITE (ACTIVE)	500	ACTIVE HYDROTHERMAL VENTS WITH DEPOSITS OF GYPSUM, ANHYDRITE, SILICA, AND PYRITE	JAKOBSSON ET AL. (pers. comm.)
LTH	REYKJANES GEOTHERMAL FIELD	-23.000	63.833	REYKJANES PENINSULA, ICELAND	NEOVOLCANIC ZONE	DISSEMINATED SULFIDES	0	DISSEMINATED QUARTZ, AHYDRITE, MINOR PYRITE, HEMATITE, AND ALTERATION MINERALS (SEAWATER RECHARGED GEOTHERMAL SYSTEM)	ARNORSSON (1978)
LTH	REYKJANES RIDGE	-24.442	63.175	MID-ATLANTIC RIDGE, ICELAND PLATEAU	MID-OCEAN RIDGE	GYPSUM, ANHYDRITE, AND MN OXIDES (ACTIVE)	500	ACTIVE HYDROTHERMAL VENTS WITH DEPOSITS OF GYPSUM, ANHYDRITE, CLAYS, AND MN OXIDES	JAKOBSSON ET AL. (unpublished), OLAFSSON ET AL. (1991)
LTH	STEINAHOLL VENT FIELD, REYKJANES RIDGE	-24.533	63.100	MID-ATLANTIC RIDGE, ICELAND PLATEAU	MID-OCEAN RIDGE	HYDROTHERMAL VENTING (DEPOSITS NOT DESCRIBED)	350	LOW-TEMPERATURE ANHYDRITE DEPOSITS (BOILING VENTS), BUBBLE PLUMES, METHANE & MN ANOMALIES	THORS ET AL. (1992), GERMAN ET AL. (1993), OLAFSSON ET AL. (1991), GERMAN ET AL. (1994), PALMER ET AL. (1995)
LTH	REYKJANES RIDGE	-25.433	62.450	MID-ATLANTIC RIDGE, ICELAND PLATEAU	MID-OCEAN RIDGE	GYPSUM, ANHYDRITE, AND MN OXIDES (ACTIVE)	500	ACTIVE HYDROTHERMAL VENTS WITH DEPOSITS OF GYPSUM, ANHYDRITE, CLAYS, AND MN OXIDES	JAKOBSSON ET AL. (unpublished), OLAFSSON ET AL. (1991)
LTH	LOST CITY VENT FIELD, MID-ATLANTIC RIDGE	-42.667	30.133	MAR-ATLANTIS TRANSFORM	RIDGE-TRANSFORM INTERSECTION	CARBONATE MOUNDS		CARBONATE CHIMNEYS AND MOUNDS, SERPENTIZIED ULTRAMAFICS, CARBONATE-MG-HYDROXIDE CHIMNEYS (ARAGONITE-CALCITE-BRUCITE, 40-75oC), 200 M WIDE FIELD AND 20 M HIGH STRUCTURES	KELLEY ET AL. (2001), KARSON ET AL. (2001), FRUEH-GREEN ET AL. (2001)
LTH	DECEPTION ISLAND	-60.650	-62.950	ANTARCTIC PENINSULA	BACK-ARC VOLCANO	METALLIFEROUS SEDIMENT, FE-MN OXIDE	<100	FE & MN-ENRICHED SEDIMENT ON CALDERA FLOOR, HOT SPRINGS ON BEACH	KLINKHAMMER ET AL. (1999), HERZIG ET AL. (2001)
LTH	THULE ISLAND, SOUTH SANDWICH	-27.283	-59.433	SOUTH ATLANTIC	ARC VOLCANO	LOW-TEMPERATURE PRECIPITATES		LOW-TEMPERATURE PRECIPITATES (NOT DESCRIBED)	LIVERMORE ET AL., GERMAN ET AL.
LTH	BABY BARE, NORTHERN JUAN DE FUCA RIDGE	-127.786	47.706	JUAN DE FUCA RIDGE	OFF-AXIS VOLCANO	FE-MN OXIDE CRUST	2,600	DIFFUSE LOW-TEMPERATURE VENTING AROUND THREE SMALL VOLCANIC HIGHS THAT PROTRUDE THROUGH TURBIDITIC FAN SEDIMENTS OF CASCADIA BASIN, FE-MN OXIDE CRUSTS AND ALTERED BASALT	DAVIS ET AL. (1992), MOTTL ET AL. (1995), BECKER ET AL . (1995)
LTH	COAXIAL SEGMENT	-129.667	46.333	CENTRAL JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	FE-OXIDES AND AMORPHOUS SILICA (ACTIVE)	2,000	FE OXIDE AND AMORPHOUS SILICA PRECIPITATES, INITIAL STAGES OF HYDROTHERMAL VENTING, 293^oC VENTS ASSOCIATED WITH 1993 ERUPTION AND MEGAPLUME	FOX (1993), EMBLEY ET AL. (1993), EMBLEY ET AL. (1995)
LTH	EAST BLANCO DEPRESSION	-129.641	44.213	BLANCO FRACTURE ZONE	RIDGE-TRANSFORM INTERSECTION	BARITE-SILICA-FE OXIDES (ACTIVE)	3,400	BARITE MOUNDS, CHIMNEYS AND STOCKWORK IN PULL-APART BASIN WITHIN THE BLACNO FRACTURE ZONE, MINOR SILICA, BARITE, FE-MN OXIDES AND MINOR SULFIDES, 64oC VENTS	DZIAK ET AL. (1996), HEIN ET AL. (1999)
LTH	SAN CLEMENTE BASIN	-117.733	32.233	SOUTHERN CALIFORNIA BORDERLAND	FAULTED CONTINENTAL MARGIN	BARITE DEPOSITS	1,800	INACTIVE MASSIVE BARITE DEPOSITS ALONG SAN CLEMENTE FAULT ZONE (DIMENSIONS UNKNOWN), COLD VENTS	LONSDALE (1979), TORRES ET AL (2000), NEWELL ET AL. (2000)
LTH	WHITE POINT, CALIFORNIA	-118.317	33.717	CALIFORNIA BORDERLANDS	MAJOR STRIKE-SLIP FAULT BOUNDARY	LOW-TEMPERATURE PRECIPITATES	<30	SULFIDE-RICH WARM SPRINGS (20^oC)	STEIN (1984)
LTH	PUNTA BANDA GEOTHERMAL FIELD	-116.750	31.750	AGUA BLANCA FAULT ZONE, BAJA CALIFORNIA	MAJOR STRIKE-SLIP FAULT BOUNDARY	GYPSUM-PYRITE DEPOSITS AT SUBMERGED HOT SRPINGS	30	MOUNDS OF GYPSUM AND PYRITE AROUND VENT ORIFICES (BOILING VENTS)	VIDAL ET AL. (1978), VIDAL ET AL. (1981)
LTH	SALTON SEA GEOTHERMAL SYSTEM	-116.000	33.500	IMPERIAL VALLEY, ALONG STRIKE OF GULF OF CALIFORNIA	OCEANIC RIFT (EARLY OPENING)	DISSEMINATED SULFIDES AND BRINES IN SUBSURFACE AQUIFERS	0	DISSEMINATED SULFIDES IN RESERVOIR ROCKS AND PRECIPITATED AS WELL SCALES (TO A MAXIMUM DEPTH OF 3 KM BELOW SEA LEVEL)	SKINNER ET AL. (1967), ELDERS (1979), McKIBBEN ET AL. (1987), McKIBBEN & ELDERS (1985)
LTH	PESCADERO			EASTERN PACIFIC	MID-OCEAN RIDGE	LOW-TEMPERATURE PRECIPITATES	<50	LOW-TEMPERATURE PRECIPITATES (NOT DESCRIBED)	VOROB'YEV ET AL. (1990)
LTH	LARSON SEAMOUNTS	-109.378	20.803	EAST PACIFIC RISE	OFF-AXIS SEAMOUNTS (18 KM OFF-AXIS)	FE-MN OXIDES	2,000	LOW-TEMPERATURE VENTS (10-15^oC) AND EXTINCT MOUNDS	LONSDALE ET AL. (1982), ALT ET AL. (1987)
LTH	RED SEAMOUNT	-109.378	20.803	EAST PACIFIC RISE, LARSON SEAMOUNTS	OFF-AXIS SEAMOUNT	FE-OXIDE AND SILICA DEPOSITS (INACTIVE)	2,000	SMALL FE OXIDE AND SILICA DEPOSITS	ALT ET AL. (1987), ALT (1988a,b)
LTH	PERU MARGIN	-78.500	-12.000	PERU MARGIN	SUBDUCTION TRENCH	BARITE DEPOSITS		MASSIVE BARITE DEPOSITS AND COLD VENTS	----------
LTH	EASTER MICROPLATE	-112.625	-26.483	EASTER MICROPLATE, SOUTHEAST PACIFIC	MID-OCEAN RIDGE (PROPAGATING RIFT)	FE OXIDE, SILICA MN OXIDE DEPOSITS (ACTIVE)	2,100	ACTIVE FIELDS (50 M DIAMETER) WITH DEPOSITS OF FE OXIDES, AMORPHOUS SILICA, AND MN OXIDES	FRANCHETEAU (in RONA & SCOTT, 1993)
LTH	FOUNDATION SEAMOUNT	-111.167	-37.700	SOUTHERN EAST PACIFIC RISE	RIDGE-HOTSPOT INTERSECTION	FE-OXIDE CHIMNEYS	1,500	LARGE FIELD OF FE-OXIDE, SILICA, AND NONTRONITE CHIMNEYS (SHIMMERING WATER) IN SUMMIT CRATER	STOFFERS ET AL. (2002)
LTH	MACDONALD SEAMOUNT	-140.250	-28.983	AUSTRAL ISLANDS	HOT SPOT VOLCANO, MID-PACIFIC SEAMOUNT	FE & MN CRUSTS AND SEDIMENTS (ACTIVE)	200	DEPOSITS OF FE & MN OXIDES AND SEDIMENTS ASSOCIATED WITH ACTIVE VENTS IN SUMMIT CALDERA OF SEAMOUNT	CHEMINEE ET AL. (1991), STUBEN ET AL. (1992), HEKINAIN ET AL. (1993), STOFFERS ET AL. (1993)
LTH	PITCAIRN HOTSPOT, ADAMS & BOUNTY SEAMOUNTS	-129.399	-25.171	PITCAIRN REGION	HOT SPOT VOLCANO, MID-PACIFIC SEAMOUNT	FE & MN CRUSTS, CHIMNEYS	400	FE & MN CRUSTS AND CHIMNEYS, SUMMIT OF ADAMS AND BOUNTY SEAMOUNTS OF PITCAIRN HOTSPOT, LOW-TEMPERATURE VENTS (11-14^oC)	STOFFERS (1990), HEKINIAN ET AL. (1993), STOFFERS ET AL. (1993), CHEMINEE ET AL. (1999)
LTH	TEAHITIA-MEAHETIA SEAMOUNTS	-148.000	-18.000	SOCIETY ISLANDS	HOT SPOT VOLCANOES, MID-PACIFIC SEAMOUNT	FE & MN CRUSTS AND METALLIFEROUS SEDIMENTS (ACTIVE)	1,500	FE & MN CRUSTS AND METALLIFEROUS SEDIMENTS	BINARD ET AL. (1991), HEKINIAN ET AL. (1993), STOFFERS ET AL. (1993), MICHARD ET AL. (1993)
LTH	LOIHI SEAMOUNT, PELE'S VENTS	-155.250	18.867	HAWAIIAN ISLANDS	HOT SPOT VOLCANO	FE-OXIDE, SILICA, FE SILICATE (NONTRONITE) DEPOSITS (ACTIVE)	1,176	ACTIVE LOW-TEMPERATURE VENT FIELD WITH ABUNDANT FE OXIDE AND AMORPHOUS SILICA PRECIPITATES, <30^oC PRIOR TO 1996 EARTHQUAKE, 200^oC AFTER 1996 IN WEST PIT CRATER	MALAHOFF ET AL (1982), DECARLO ET AL. (1983), KARL ET AL. (1988), MALAHOFF ET AL. (1996), DAVIS & CLAGUE (1997), DAVIS ET AL. (1997)
LTH	LOIHI SEAMOUNT, KAPO'S VENTS	-155.250	18.867	HAWAIIAN ISLANDS	HOT SPOT VOLCANO	FE-OXIDE, SILICA, FE SILICATE (NONTRONITE) DEPOSITS (ACTIVE)	1,200	ACTIVE LOW-TEMPERATURE VENT FIELD WITH ABUNDANT FE OXIDE AND AMORPHOUS SILICA PRECIPITATES, SOUTHERN FLANK OF LOIHI	DAVIS & CLAGUE (1998)
LTH	VULCANO ISLAND, BAIEI DI LEVANTE	15.000	38.500	AEOLIAN ARC, TYRRHENIAN SEA	ISLAND ARC VOLCANO	FE & MN OXIDES, AMORPHOUS SILICA, SULFATES AND PYRITIC TUFFS (ACTIVE)	0	HYDROTHERMAL DISCHARGE ON SHORES OF VOLCANIC ISLAND WITH PRECIPITATION OF FE & MN OXIDES, SILICA, ANHYDRITE, GYPSUM AND PYRITE WITHIN VOLCANICLASTIC SEDIMENTS	HONNOREZ ET AL. (1973), VALETTE-SILVER (1981), TUFAR (1991)
LTH	CAPO PALINURO	15.000	39.500	AEOLIAN ISLANDS	SUBMARINE LIMESTON CAVES	LOW-TEMPERATURE PRECIPITATES	<10	LOW-TEMPERATURE PRECIPITATES (NOT DESCRIBED)	STUEBEN ET AL. (1996)
LTH	CAPO MISSENO	14.000	39.000	AEOLIAN ISLANDS	SUBMARINE LIMESTON CAVES	LOW-TEMPERATURE PRECIPITATES	<10	LOW-TEMPERATURE PRECIPITATES (NOT DESCRIBED)	GIMNEZ ET AL. (1991)
LTH	MARSILLI SEAMOUNT	14.500	39.300	TYRRHENIAN SEA	ISLAND ARC VOLCANO	FE-MN OXIDES	1,600	FE-MN OXIDES & SEDIMENTS	----------
LTH	SANTORINI CALDERA, KAMENI ISLAND	25.500	36.433	HELLENIC ARC, AEGEAN ISLANDS	ISLAND ARC VOLCANO	FE & MN OXIDES, SILICA, SIDERITE (ACTIVE)	<40	HYDROTHERMAL DISCHARGE IN CALDERA OF VOLCANO WITH DEPOSITS OF FE & MN OXIDES, AMORPHOUS SILICA, SIDERITE, AND METALLIFEROUS SEDIMENTS	BOSTROM & WIDENFALK (1984), SMITH & CRONAN (1983), PUCHELT (1973), VARNAVAS & CRONAN (1988)
LTH	MILOS ISLAND	24.500	36.667	HELLENIC ARC, AEGEAN ISLANDS	ISLAND ARC VOLCANO	FE OXIDE, SILICA, NATIVE SULFUR (ACTIVE)	10	HYDROTHERMAL DISCHARGE (123^oC) OFFSHORE MILOS WITH PRECIPITATES OF FE OXIDES, AMORPHOUS SILICA, AND NATIVE SULFUR	DANDO & LEAHY (1993), DANADO ET AL. (1995), FITZSIMONS ET AL. (1997), STUEBEN & GLASBY (1999), CRONAN & VARNAVAS (19999)
LTH	KOS ISLAND	27.000	36.700	HELLENIC ARC, AEGEAN ISLANDS	ISLAND ARC VOLCANO	FE OXIDE, SILICA, NATIVE SULFUR (ACTIVE)	10	HYDROTHERMAL DISCHARGE OFFSHORE VOLCANO WITH DEPOSITS OF FE & MN OXIDES, AMORPHOUS SILICA, AND METALLIFEROUS SEDIMENTS	VARNAVAS & CRONAN (1991)
LTH	NISIROS ISLAND	27.250	36.500	HELLENIC ARC, AEGEAN ISLANDS	ISLAND ARC VOLCANO	FE OXIDE, SILICA, NATIVE SULFUR (ACTIVE)	10	HYDROTHERMAL DISCHARGE OFFSHORE VOLCANO WITH DEPOSITS OF FE & MN OXIDES, AMORPHOUS SILICA, AND METALLIFEROUS SEDIMENTS	VARNAVAS & CRONAN (1991)
LTH	KICK'EM JENNY VOLCANO	-61.630	12.300	ANTILLES ARCHIPELAGO	ARC VOLCANO	LOW-TEMPERATURE PRECIPITATES			HALBACH (2001)
LTH	MONTSERRAT VOLCANO, LESSER ANTILLES	-62.180	16.720	LESSER ANTILLES ARC	ARC VOLCANO	NEAR-SHORE HOT SPRINGS	<10	NEAR-SHORE HOT SPRINGS ASSOCIATED WITH 1995 ERUPTION	JOHNSON ET AL. (1997), CRONAN (1995)
LTH	AKUTAN ISLAND	-165.783	54.133	ALEUTIAN ISLANDS	ARC VOLCANO	HYDROTHERMAL DISCHARGE (NOT DESCRIBED)	0	HYDROTHERMAL DISCHARGE ALONG SHORES OF HOT SPRINGS BAY	ALASKA GEOTHERMAL BIBLIOGRAPHY
LTH	BOGOSLOF VOLCANO	-168.033	53.917	ALEUTIAN ISLANDS	BACK-ARC VOLCANO	HYDROTHERMAL ACTIVITY (DEPOSITS NOT DESCRIBED)	<50	HYDROTHERMAL ACTIVITY ASSOCIATED WITH HISTORICAL VOLCANIC ERUPTIONS	LOBECK (1939), JAGGAR (1945)
LTH	ADAK ISLAND	-176.717	51.850	ALEUTIAN ISLANDS	ARC VOLCANO	HYDROTHERMAL DISCHARGE (DEPOSITS NOT DESCRIBED)	0	HYDROTHERMAL DISCHARGE ALONG SHORES ON FLANK OF VOLCANO	ALASKA GEOTHERMAL BIBLIOGRAPHY
LTH	PIIP VOLCANO	167.272	55.417	WESTERN ALEUTIANS	DACITE VOLCANO ADJACENT TO BACK-ARC SPREADING CENTER	SILICA, BARITE, ANHYDRITE, CARBONATE MOUNDS (ACTIVE)	400	SEVERAL ACTIVE VENTS AND SILICA, ANHYDRITE, CALCITE, BARITE MOUNDS AND CHIMNEYS WITH MINOR PYRITE	TOROKHOV ET AL. (1992), TARAN ET AL. (1992), BARANOV ET AL. (1991), SAGALEVITCH ET AL. (1992)
LTH	DERIUGIN BASIN	145.000	53.000	SEA OF OKHOTSK	BACK-ARC BASIN	BARITE DEPOSITS (ACTIVE)	1,500	MASSIVE BARITE DEPOSITS (UP TO 10 M THICK) IN BACK-ARC BASIN OFF SAKHALIN ISLAND, ASSOCIATED CHEMOSYNTHETIC FAUNA, BA-RICH SULFATE-POOR COLD VENTS	ASTAKHOVA ET AL. (1987), ASTAKHOVA ET AL. (1992), BOLLWERK ET AL. (2001)
LTH	PARUMASHIR ISLAND	155.500	49.667	KURILE ISLANDS	BACK-ARC VOLCANO	CARBONATE CRUSTS (ACTIVE)	800	CARBONATE CRUSTS AND NODULES WITH BLACK SULFIDIC MUDS	AVDEIKO (1986), LEIN ET AL. (1989), CHERTKOVA & STUNZHAS (1990)
LTH	KRATERNAYA BAY, USHISHIR VOLCANO	152.500	47.500	KURILE ISLANDS	ARC VOLCANO	SILICA, NATIVE SULFUR PRECIPITATES	<50	PRECIPTIATES OF SILICA AND NATIVE SULFUR AROUND ACTIVE VENTS (UP TO 40^oC)	CHERTKOVA & GUSEVA (1986), TARASOV ET AL. (1990a,b), KUZNETSOV ET AL.
LTH	MENDELEYEV GEOTHERMAL FIELD	146.250	44.330	KURILE ISLANDS	ARC VOLCANO	SULFIDE & SULFATE PRECIPITATES	0	ANHYDRITE AND SULFIDE MINERALIZATION IN DRILL HOLES ( UP TO 400 M BELOW SEA LEVEL) ON FLANK OF MENDELEYEV VOLCANO, KUNASHIR ISLAND	OZEROVA ET AL. (1971)
LTH	KAGOSHIMA BAY, SAKURAJIMA VOLCANO	130.733	31.633	SOUTHERN KYUSHU, JAPAN	RIFTED VOLCANIC ARC	MINERALIZED VOLCANICLASTIC SEDIMENTS (ACTIVE)	80-100	ACTIVE HYDROTHERMAL VENTS IN KAGOSHIMA BAY ADJACENT TO SAKURAJIMA VOLCANO	IIZAWA ET AL., JAMSTEC (1993), HASIMOTO ET AL. (1993)
LTH	FUSHIME GEOTHERMAL SYSTEM	130.583	31.150	SOUTHERN KYUSHU, JAPAN	RIFTED VOLCANIC ARC	POLYMETALLIC SULFIDE PRECIPITATES (ACTIVE)	0	POLYMETALLIC SULFIDE PRECIPITATES IN GEOTHERMAL WELLS	AKAKU (1988)
LTH	STASUMA IWOJIMA, IWODAKE VOLCANO	130.333	30.750	RYUKYU ISLANDS	ARC VOLCANO	HYDROTHERMAL DISCHARGE (DEPOSITS NOT DESCRIBED)	0	HYDROTHERMAL DISCHARGE OF ACID SPRINGS BELOW SEA LEVEL ON FLANKS OF VOLCANO	HEDENQUIST ET AL. (1991)
LTH	IHEYA RIDGE (CLAM SITE)	127.143	27.573	OKINAWA TROUGH	INTRACONTINENTAL BACK-ARC	FE-OXIDE, SILICA MOUNDS (ACTIVE)	1,400	CARBONATE-RICH 100-220^oC HOT SPRINGS IN FISSURES (BOILING VENTS), FE OXIDE AND SILICA DEPOSITS WITH MN CRUSTS IN THE SUMMIT CRATERS OF SEVERAL SUBMERGED VOLCANOES IN THE OKINAWA TROUGH BACK-ARC BASIN	UYEDA (1987), KIMURA ET AL. (1988), KIMURA ET AL (1989), SAKAI ET AL. (1990), GAMO ET AL. (1991), HASHIMOTO ET AL. (1992), HALBACH ET AL. (1993)
LTH	MIYAKO SEAMOUNT, WESTERN OKINAWA TROUGH	125.000	25.000	WESTERN OKINAWA TROUGH	BACK-ARC VOLCANO	ACTIVE VENTING (NOT DESCRIBED)	1,000	ACTIVE VENTS (150^oC), SULFIDE CHIMNEYS (NOT DESCRIBED) IN GRABEN ADJACENT TO MIYAKO ISLAND, OKINAWA TROUGH BACK-ARC RIFT	MATSUMOTO ET AL. (2000)
LTH	SPOT AREA, EAST TAIWAN & SOUTHERN OKINAWA TROUGH	122.500	24.800	WESTERN OKINAWA TROUGH	BACK-ARC RIFT	ACTIVE VENTING (NOT DESCRIBED)	1,500	ACTIVE VENTS (170^oC), SULFIDE CHIMNEYS (NOT DESCRIBED) IN RIFTED CRUST OFF NORTHEASTERN TAIWAN, EXTENSION OF OKINAWA TROUGH BACK-ARC RIFT, 68 VOLCANOES IN SPOT AREA (7 WITH HYDROTHERMAL PLUMES AND VENT FAUNA)	MATSUMOTO ET AL. (2000), LEE ET AL. (1999)
LTH	SUMISU RIFT	139.892	32.100	IZU-BONIN ARC	INCIPIENT BACK-ARC RIFT	FE OXIDE, BARITE, SILICA MOUNDS	1,500	SMALL VENT FIELDS WITH FE OXIDE, SILICA, BARITE CHIMNEYS ON A SUBMERGED VOLCANO WITHIN IN A BACK-ARC RIFT OF THE IZU-BONIN ARC	URABE & KUSAKABE (1990)
LTH	KITA-BAYONNAISE SEDIMENTS	139.850	31.883	IZU-BONIN ARC (SHICHITO-IWOJIMA RIDGE)	INTRA-OCEANIC ARC VOLCANO	DISSEMINATED FE-OXIDE, SULFIDE, BARITE, CLAY DEPOSITS	1,375	DISSEMINATED FE-OXIDES, POLYMETALLIC SULFIDES, BARITE, AND CLAYS IN ALTERED VOLCANICLASTIC SEDIMENTS FROM KITA-BAYONNAISE CALDERA	IIZASA (1993)
LTH	MOKUYO SEAMOUNT	140.583	28.300	IZU-BONIN ARC (SHICHITO-IWOJIMA RIDGE)	INTRA-OCEANIC ARC VOLCANO	HYDROTHERMAL VENTS (DEPOSITS NOT DESCRIBED)	1256	HYDROTHERMAL VENTS IN CALDERA OF ARC VOLCANO NORTH OF CHICHIJIMA ISLAND (DEPOSITS NOT DESCRIBED)	HASHIMOTO ET AL. (1992)
LTH	NIKKO SEAMOUNT	140.000	25.000	IZU-BONIN ARC (SHICHITO-IWOJIMA RIDGE)	INTRA-OCEANIC ARC VOLCANO	FE-MN OXIDES	433	DIFFUSE VENTING	DEEP SEA RESEARCH (1995)
LTH	KAIKATA SEAMOUNT	141.083	26.700	IZU-BONIN ARC (SHICHITO-IWOJIMA RIDGE)	INTRA-OCEANIC ARC VOLCANO	VEIN AND DISEMINATED SULFIDES IN ALTERED LAVAS, MN CRUSTS	900	QUARTZ-PYRITE VEIN AND DISSEMINATED PYRITE WITH MINOR POLYMETALLIC SULFIDES IN ALTERED ANDESITE LAVAS, MN CRUSTS ON FLANKS OF VOLCANO, LOW-TEMPERATURE (22^oC) CLEAR VENTING	USUI ET AL. (1986), USUI ET AL. (1989), URABE ET AL. (1987), MITSUZAWA ET AL. (1989), HASHIMOTO ET AL. (1992), USUI & NISHIMURA (1992)
LTH	KASUGA SEAMOUNT	143.667	21.500	NORTHERN MARIANA ARC	INTRA-OCEANIC ARC VOLCANO	FE OXIDE, SILICA, NATIVE SULFUR DEPOSITS	400-1,500	HYDROTHERMAL CRUSTS (39^oC), DEPOSITS OF CEMENTED VOLCANICLASTIC SEDIMENTS WITH AMORPHOUS FE OXIDES, NONTRONITE CHIMNEYS, SILICA, NATIVE SULFUR, MINOR PYRITE (FUKUJIN VOLCANO, KASUGA SEAMOUNTS 2 AND 3)	McMURTRY ET AL. (1993), VONDERHAAR ET AL. (1987), FRYER ET AL. (1995)
LTH	ESMERALDA BANK	145.250	14.967	MARIANA ARC	INTRA-OCEANIC ARC VOLCANO	SILICA, PYRITE, NATIVE SULFUR DEPOSITS (ACTIVE)	<300	HYDROTHERMAL MOUNDS OF AMORPHOUS SILICA, MINOR PYRITE, AND NATIVE SULFUR	STUBEN ET AL. (1992)
LTH	BANUA WUHU, SANGIHE ARC	125.500	3.000	SANGIHE ARC, MAHENETANG ISLAND	ARC VOLCANO	SUBMERGED HOT SPRINGS	10	LOW-TEMPERATURE 50^oC HOT SPRINGS AND FE-OXIDE DEPOSITS	McCONACHY ET AL. (2001)
LTH	SUNDA-BANDA	125.500	3.000	SUNDA-BANDA ARC	ARC VOLCANO	LOW-TEMPERATURE PRECIPITATES	<10	LOW-TEMPERATURE PRECIPITATES (NOT DESCRIBED)	M. RISK (unpublished), WIEDECKE ET AL. (2002)
LTH	ST. ANDREW'S STRAIT	147.633	-2.417	CENTRAL MANUS BASIN	ARC VOLCANO	LOW-TEMPERATURE PRECIPITATES	<10	LOW-TEMPERATURE PRECIPITATES (NOT DESCRIBED)	----------
LTH	THALASEA GEOTHERMAL FIELD	150.083	-5.083	WILLAUMEZ PENINSULA, PNG	ARC VOLCANO	FE & MN OXIDES AND PYRITIC MUDS (ACTIVE)	0	HYDROTHERMAL DISCHARGE OF ACID SPRINGS IN TIDE PPOLS WITH FE & MN OXIDES AND PYRITIC MUDS	FERGUSON ET AL. (1974)
LTH	MATUPI HARBOUR	151.988	-5.285	RABAUL VOLCANO, PNG	ARC VOLCANO	AMORPHOUS SILICA AND FE & MN RICH CRUSTS (ACTIVE)	<30	MOUNDS OF AMORPHOUS SILICA AND FE & MN CRUSTS AND CEMENTETED VOLCANICLASTIC SEDIMENTS	FERGUSON & LAMBERT (1972)
LTH	AMBITTLE ISLAND	153.583	-4.083	NEW IRELAND BASIN (FENI ISLANDS)	VOLCANIC ISLAND IN RIFTED FORE-ARC BASIN	HYDROTHERMAL DISCHARGE AT SHORELINE, FE-OXIDES (DEPOSITS NOT DESCRIBED)	<30	HYDROTHERMAL DISCHARGE (DEPOSITS NOT DESCRIBED)	LICENCE ET AL. (1987)
LTH	LUISE HARBOUR	152.167	-2.917	NEW IRELAND BASIN (LIHIR ISLAND)	VOLCANIC ISLAND IN RIFTED FORE-ARC BASIN	FE OXIDES, SILICA, DOLOMITE AND PYRITE (ACTIVE BOILING VENTS)	<30	LOCAL CRUSTS OF FE OXIDES, SILICA, AND PYRITE ALONG SEAWARD EXTENSION OF HOT SPRINGS WITHIN LUISE CALDERA	MOYLE ET AL. (1990)
LTH	EDISON SEAMOUNT	152.600	-3.308	NEW IRELAND BASIN (SOUTH LIHIR)	SUBMARINE VOLCANO IN RIFTED FORE-ARC BASIN	AMORPHOUS SILICA AND PYRITE, VEIN AND DISSEMINATED (ACTIVE)	1,450	HYDROTHERMAL VENTS ON SMALL VOLCANIC CONE WITH AMORHOUS SILICA AND DISSEMINATED PYRITE, TWO AREAS OF VEINTING 100-200 M DIAMETER, HIGH H2S BUT NOT SULFIDE DEPOSITS, LARGE CH4 ANOMALY	HERZIG ET AL. (1994)
LTH	FRANKLIN SEAMOUNT	151.830	-9.908	WESTERN WOODLARK BASIN	SEAMOUNT ADJACENT TO BACK-ARC SPREADING CENTER	BARITE, SILICA, FE-OXIDE DEPOSIT (ACTIVE & INACTIVE)	2,250	LARGE DEPOSITS OF FE AND MN OXIDES, SILICA, AND BARITE DEPOSITS ON FLANK AND IN CALDERA OF AXIAL VOLCANO IN THE WESTERN WOODLARK BASIN (UP TO 200 M EXPLORED DIMENSIONS), VENTING CLEAR FLUID (20-30^oC), MANY INACTIVE FE-SILICA-BARITE MOUNDS	SCOTT ET AL. (1990), BINNS ET AL. (1991), LISITSYN ET AL. (1991), BINNS ET AL. (1993), LISITSYN ET AL. (1991), SCOTT & BINNS (1995), BINNS ET AL. (1993), BOYD ET AL. (1993)
LTH	EFATE AND EPI ISLANDS	168.367	-16.667	NEW HEBRIDES, VANUATU	INTRA-OCEANIC ARC VOLCANOES	AMORPHOUS SILICA, FE & MN OXIDES DEPOSIT	<450	AMORPHOUS SILICA, FE & MN OXIDE DEPOSITS	EXON & CRONAN (1983)
LTH	SAVUSAVU, VANU LEVU	179.250	-16.750	FIJI	HOT SPOT	LOW-TEMPERATURE PRECIPITATES	<10	LOW-TEMPERATURE PRECIPITATES (NOT DESCRIBED)	----------
LTH	NORTHERN LAU BASIN	-176.825	-16.923	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	SILICA, BARITE DEPOSITS	1,700	AMORPHOUS SILCIA, BARITE, AND CLAYS CEMENTING VOLCANICLASTIC BASALT FRAGMENTALS (OFFSET ON ACTIVE SPREADING CENTER)	BERTINE & KEENE (1975)
LTH	SOUTHERN LAU BASIN, VALU FA RIDGE	-176.617	-22.250	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	FE & MN CRUSTS AND FE SILICA (NONTRONITE) DEPOSITS	>1,600	FE & MN CRUSTS WITH LOCAL FE SILICATE (NONTRONITE) ALONG ACTIVE SPREADING CENTER	VON STACKELBERG ET AL. (1985)
LTH	WHITE ISLAND, BAY OF PLENTY	177.500	-36.616	TAUPO VOLCANIC ZONE, NEW ZEALAND	BACK-ARC SPREADING CENTER	AMORPHOUS SILICA, ANHYDRITE CHIMNEYS (ACTIVE)	100-170	ACTIVE HYDROTHERMAL VENTS ON FLANKS OF WHITE ISLAND AND IN BAY OF PLENTY WITH SILCA AND ANHYDRITE MOUNDS	SARANO ET AL. (1989), PANTIN & WRIGHT (in press)
LTH	WHALE ISLAND, BAY OF PLENTY	176.967	-37.850	TAUPO VOLCANIC ZONE, NEW ZEALAND	BACK-ARC SPREADING CENTER	AMORPHOUS SILICA, ANHYDRITE CHIMNEYS (ACTIVE)	<30	LOW-TEMPERATURE GAS DISCHARGE	PANTIN & WRIGHT (in press)

NFS	OCEANOGRAPHER & SHABAN DEEP	35.350	26.225	RED SEA (NORTHERN)	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS (INCLUDING SULFIDE FACIES)	1,560	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS (INCLUDING MINOR SULFIDE FACIES)	TOOMS ET AL. (1973), BIGNELL ET AL. (1976), BLUM & PUCHELT (1991)
NFS	GYPSUM DEEP	36.417	24.700	RED SEA (NORTHERN)	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS (INCLUDING SULFIDE FACIES)	1,200	FE OXIDE MUDS, GYPSUM LAYERS, AND PYRITIC MUDS (NO BRINE POOL)	BACKER & SCHOELL (1972), BIGNELL ET AL. (1976)
NFS	VEMA DEEP	36.520	23.841	RED SEA (NORTHERN)	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS	1,600	FE OXIDE & MANGANIFEROUS MUDS (NO BRINE POOL)	HERMAN & ROSENBERG (1969), BIGNELL ET AL. (1976)
NFS	NEREUS DEEP	37.283	23.167	RED SEA (CENTRAL)	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS (INCLUDING SULFIDE FACIES)	2,400	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS, INCLUDING MINOR SULFIDE FACIES	BACKER & SCHOELL (1972), BIGNELL ET AL. (1976)
NFS	THETIS DEEP	37.583	22.783	RED SEA (CENTRAL)	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS (INCLUDING SULFIDE FACIES)	1,800	FE OXIDE & MANGANIFEROUS MUDS, INCLUDING MINOR SULFIDE FACIES (NO BRINE POOL)	BIGNELL ET AL. (1976)
NFS	CHAIN DEEP	38.092	21.300	RED SEA, ATLANTIS II AREA	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS	2,000	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS	BACKER & RICHTER (1973)
NFS	DISCOVERY DEEP	38.050	21.283	RED SEA, ATLANTIS II AREA	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS	2,000	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS	BACKER & RICHTER (1973)
NFS	ALBATROSS DEEP	38.113	21.200	RED SEA, ATLANTIS II AREA	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS	2,100	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS	BACKER & SCHOELL (1972), BIGNELL ET AL. (1976)
NFS	VALDIVIA DEEP	37.958	21.342	RED SEA, ATLANTIS II AREA	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS	1,670	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS	BACKER & SCHOELL (1972), BIGNELL ET AL. (1976)
NFS	SHAGARA DEEP	38.088	21.130	RED SEA, ATLANTIS II AREA	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS (INCLUDING SULFIDE FACIES)	2,500	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS, INCLUDING MINOR SULFIDE FACIES	BACKER & SCHOELL (1972), BIGNELL ET AL. (1976)
NFS	ERBA DEEP	38.350	20.667	RED SEA, ATLANTIS II AREA	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS (INCLUDING SULFIDE FACIES)	2,000	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS, INCLUDING MINOR SULFIDE FACIES	BACKER & SCHOELL (1972), BIGNELL ET AL. (1976)
NFS	SUDAN DEEP	38.513	20.063	RED SEA (SOUTHERN)	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS	2,500	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS	BIGNELL ET AL. (1976)
NFS	SUAKIN DEEP	38.733	19.633	RED SEA (SOUTHERN)	OCEANIC RIFT (EARLY OPENING)	METALLIFEROUS MUDS (INCLUDING SULFIDE FACIES)	2,800	BRINE POOL WITH FE OXIDE & MANGANIFEROUS MUDS, INCLUDING MINOR SULFIDE FACIES	BAUMANN ET AL. (1973)
NFS	GULF OF ADEN	47.650	12.567	AFAR RIFT	OCEANIC RIFT (EARLY OPENING)	FE & MN RICH CRUSTS (INACTIVE)	2,260	FE- AND MN-OXIDE CRUSTS IN THE RIFT VALLEY OF THE GULF OF ADEN AND FOSSIL FE-MN DEPOSITS IN THE DANAKIL DEPRESSION, AFAR RIFT	CANN ET AL. (1977), BONATTI ET AL. (1972)
NFS	DANAKIL DEPRESSION	43.154	11.104	AFAR RIFT	OCEANIC RIFT (EARLY OPENING)	FE & MN CRUSTS (INACTIVE)	0	FOSSIL FE OXIDE AND MN OXIDE CRUSTS WITH BARITE IN AXIAL ZONE OF VOLCANIC EXTRUSION	BONATTI ET AL. (1972B)
NFS	OWEN FRACTURE ZONE	57.950	9.833	CARLSBERG RIDGE, NW INDIAN OCEAN	FRACTURE ZONE	MN CRUSTS	4,500	MN CRUSTS ON FRESH BASALT	RONA ET AL. (1981)
NFS	SOUTHEAST INDIAN RIDGE	74.173	-28.061	INDIAN OCEAN	MID-OCEAN RIDGE	METALLIFEROUS SEDIMENTS	2,600-5,000	VARIOUS SITES OF METALLIFEROUS SEDIMENTS ON RIDGE CREST	BOSTROM ET AL. (1969), WARNER & GIESKES (1974), MARCHIG & VALLIER (1974)
NFS	ALPHA RIDGE	-109.153	85.830	ALPHA RIDGE, ARCTIC OCEAN	MID-OCEAN RIDGE (FORMER SPREADING CENTER)	FE & MN ENRICHED SEDIMENTS WITH MIINOR CRUSTS (INACTIVE)	1,370	FE & MN ENRICHED SEDIMENTS WITH MINOR FE OXIDE AND MN OXIDE CRUSTS ON BASALT	STOFFYNN-EGLI (1987)
NFS	ICELAND PLATEAU	-14.660	68.758	KOLBEISNEY RIDGE	MID-OCEAN RIDGE (FLANK)	FE & MN ENRICHMENT IN SEDIMENTS	>2,000	FE & MN ENRICHMENT IN SEDIMENTS ON ICELAND PLATEAU	VARENTSOV ET AL. (1980)
NFS	AZORES-ICELAND RIDGE	-30.000	45.000	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (RIDGE FLANK AND AXIAL VALLEY)	METALLIFEROUS SEDIMENTS	2,600	FE & MN ENRICHED SEDIMENTS	GROUSSET & DONARD (1984)
NFS	45^oN , MID-ATLANTIC RIDGE	-27.833	45.500	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE	METALLIFEROUS SEDIMENTS	2,600	FE & MN ENRICHED SEDIMENTS	CRONAN (1972)
NFS	FAMOUS AREA	-33.067	36.950	MID-ATLANTIC RIDGE	TRANSFORM FAULT	FE & MN RICH CRUSTS (INACTIVE)	2,700	LARGE AREAS (KM DIMENSIONS) OF FE, MN, AND SILICA-RICH CRUSTS AND HYDROTHERMAL CLAYS	HOFFERT ET AL. (1978)
NFS	EAST WALL, TAG HYDROTHERMAL FIELD	-44.775	26.133	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (FAULT BLOCK)	FE-MN OXIDE DEPOSITS	2,800	FE-MN OXIDE DEPOSITS	BOGDANOV ET AL. (1999)
NFS	23^oN, MID-ATLANTIC RIDGE	-44.953	23.370	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (RIDGE FLANK)	METALLIFEROUS SEDIMENTS & MN CRUSTS	4,000	METALLIFEROUS SEDIMENTS IN AND MN OXIDE CRUSTS ON UPLIFTED BLOCK ALONG CREST OF RIDGE AND ON ITS FLANK	THOMPSON ET AL. (1975), KONG ET AL. (1985)
NFS	KANE FRACTURE ZONE	-33.499	22.352	MID-ATLANTIC RIDGE	TRANSFORM FAULT	METALLIFEROUS SEDIMENT & MN NODULES	5,400	METALLIFEROUS SEDIMENT AND MN NODULES	LATOUCHE ET AL. (1979)
NFS	16^o50 N, MID-ATLANTIC RIDGE	-46.380	16.795	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (FAULT BLOCK)	MN CRUSTS (INACTIVE)	3,300	MN OXIDE CRUSTS ON FAULT BLOCK IN RIFT VALLEY	RONA ET AL. (1982), EBERHART ET AL. (1988)
NFS	12^o50 N, MID-ATLANTIC RIDGE	-44.900	12.910	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (FAULT BLOCK)	FE-OXIDE SEDIMENTS	3,900	HYDROTHERMAL PLUME, FE-OXIDES IN SEDIMENT	SUDARIKOV ET AL. (2001)
NFS	VEMA FRACTURE ZONE	-41.800	10.850	MID-ATLANTIC RIDGE	TRANSFORM FAULT	MN CRUSTS	<3,600	MN CRUSTS FROM WALLS OF FRACTURE ZONE	RONA ET AL. (1976)
NFS	PALINURO SEAMOUNT	14.811	39.471	AEOLIAN ARC, TYRRHENIAN SEA	BACK-ARC ARC VOLCANO	FE & MN CRUSTS	700	HYDROTHERMAL MN CRUST ON CALCAREOUS SEDIMENTS	PUCHELT & LASCHEK (1986), ECKHARDT ET AL. (1997)
NFS	PALINURO SEAMOUNT	14.853	39.468	AEOLIAN ARC, TYRRHENIAN SEA	BACK-ARC ARC VOLCANO	FE & MN CRUSTS	640	HYDROTHERMAL MN CRUST ON CALCAREOUS SEDIMENTS	PUCHELT & LASCHEK (1986), ECKHARDT ET AL. (1997)
NFS	ENARETA SEAMOUNT	14.004	38.626	AEOLIAN ARC, TYRRHENIAN SEA	BACK-ARC ARC VOLCANO	FE & MN CRUSTS	1,260	HYDROTHERMAL FE-OXYHYDROXIDE CRUST ON CALCAREOUS SEDIMENTS	PUCHELT & LASCHEK (1986), ECKHARDT ET AL. (1997)
NFS	EOLO SEAMOUNT	14.220	38.564	AEOLIAN ARC, TYRRHENIAN SEA	BACK-ARC ARC VOLCANO	FE & MN CRUSTS	1,210	HYDROTHERMAL FE-OXYHYDROXIDE CRUST ON CALCAREOUS SEDIMENTS	PUCHELT & LASCHEK (1986), ECKHARDT ET AL. (1997)
NFS	DELLWOOD SEAMOUNT	-129.352	50.858	NORTHERN JUAN DE FUCA RIDGE	OFF-AXIS SEAMOUNTS	FE & MN CRUSTS (INACTIVE)	800	FE & MN CRUSTS, FE-OXIDES IN SEDIMENTS, AND ALTERED BASALT	PIPER ET AL. (1975)
NFS	NORTHERN EXPLORER RIDGE (EXPLORER DEEP)	-129.750	50.083	NORTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE (RIDGE FLANK AND AXIAL VALLEY)	FE & MN CRUSTS (INACTIVE)	3,200	FE OXIDE, FE SILICATE (NONTRONITE) AND MN OXIDE CRUSTS	GRILL ET AL. (1981)
NFS	WEST VALLEY	-129.042	48.483	NORTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	HYDROTHERMAL DEPOSITS (NOT DESCRIBED)	3,000	HYDROTHERMAL DEPOSITS (NOT DESCRIBED)	SCOTT ET AL. (1988), LEYBOURNE & VAN WAGONER (1992)
NFS	SPLIT SEAMOUNT, COBB OFFSET	-128.967	47.583	CENTRAL JUAN DE FUCA RIDGE	SEAMOUNT (OVERLAPPING SPREADING CENTER)	FE & MN CRUSTS (ACTIVE)	>2,000	VARIOUS FE SILICATE (NONTRONITE) & MN OXIDE CRUST DEPOSITS ON OFF-AXIS SEAMOUNTS AND ALONG FAULT BOUNDARIES (COBB OFFSET)	MURNAME & CLAGUE (1983), CRANE ET AL. (1985)
NFS	"ET" AREA	-128.926	48.199	CENTRAL JUAN DE FUCA RIDGE	MID-OCEAN RIDGE	HYDROTHERMAL DEPOSITS (NOT DESCRIBED)	>2,000	HYDROTHERMAL DEPOSITS (NOT DESCRIBED)	CRANE ET AL. (1985)
NFS	BLANCO FRACTURE ZONE	-130.000	44.167	SOUTHERN JUAN DE FUCA RIDGE	RIDGE-TRANSFORM INTERSECTION	FE & MN ENRICHED SEDIMENTS (NOT DESCRIBED)	4,800	FE & MN ENRICHED SEDIMENTS	SELK (1982), EMBLEY ET AL. (1982), JUTEAU ET AL.
NFS	NORTHERN GORDA RIDGE	-127.167	42.750	GORDA RIDGE	MID-OCEAN RIDGE	FE & MN OXIDE DEPOSITS (NOT DESCRIBED)	>2,600	FE & MN OXIDE DEPOSITS (NOT DESCRIBED)	RONA & CLAGUE (1986), HOWARD & FISK (1986 a,b), DEEP SEA RESEARCH (1998)
NFS	NORTHERN GORDA RIDGE	-127.150	42.133	GORDA RIDGE	MID-OCEAN RIDGE	FE & MN OXIDE DEPOSITS (NOT DESCRIBED)	>2,600	FE & MN OXIDE DEPOSITS (NOT DESCRIBED)	CLAGUE ET AL. (1984), DEEP SEA RESEARCH (1998)
NFS	41^o30 N, GORDA RIDGE	-127.450	41.517	SOUTHERN GORDA RIDGE	MID-OCEAN RIDGE	MN CRUSTS AND NONTRONITE	3,350	LAYERED DEPOSITS OF FE SILICATES (NONTRONITE) AND MN CRUSTS	CLAGUE ET AL. (1984), DEEP SEA RESEARCH (1998)
NFS	NORTHERN TROUGH, GUAYMAS BASIN	-111.500	27.283	GULF OF CALIFORNIA	SEDIMENTED RIFT	FE & MN OXIDE CRUSTS	2,000	FE & MN OXIDE CRUSTS, FE SILICATES (TALC), MINOR FE SULFIDES	LONSDALE ET AL. (1980)
NFS	RIFT BASINS (MISC.), GULF OF CALIFORNIA	-110.000	25.500	GULF OF CALIFORNIA	SEDIMENTED RIFT	FE RICH METALLIFEROUS SEDIMENTS	2,000	FE OXIDE AND FE SILICATE BEARING SEDIMENTS IN RIFT BASINS OF SPREADING CENTER	HEIN & YEH (1979)
NFS	CLARION FRACTURE ZONE	-153.000	14.000	CENTRAL PACIFIC	FRACTURE ZONE (NEAR HAWAIIAN RIDGE)	FE & MN OXIDE CRUSTS	5,600	FE & MN OXIDE CRUSTS	BEIERSDORF ET AL. (1982)
NFS	CLIPPERTON SEAMOUNT	-104.066	12.567	EAST PACIFIC RISE	OFF-AXIS SEAMOUNT	FE & MN OXIDE CRUSTS	2,100	FE & MN OXIDE CRUSTS ON OFF-AXIS SEAMOUNT	HEKINIAN & FOUQUET (1985)
NFS	11^o30N, EAST PACIFIC RISE, WEST SEAMOUNT	-103.883	11.483	EAST PACIFIC RISE	MID-OCEAN RIDGE	FE-MN-OXIDE & SILICA	2,250	SILICA AND FE-MN OXIDE DEPOSITS WITH MINOR POLYMETALLIC SULFIDES	FOUQUET ET AL. (1996), HEKINIAN ET AL. (1993), HEKININA & BIDEAU (1995), KURIYAMA ET AL. (1994)
NFS	11^oN SEAMOUNT	-110.000	11.500	EAST PACIFIC RISE	OFF-AXIS SEAMOUNT	FE & MN OXIDE CRUSTS	2,500	FE & MN OXIDE CRUSTS IN CALDERA OF SEAMOUNT	HEKINIAN ET AL. (1993)
NFS	10^oN SEAMOUNT	-104.483	9.917	EAST PACIFIC RISE	OFF-AXIS SEAMOUNT	FE & MN OXIDE CRUSTS	1,750	FE & MN OXIDE CRUSTS IN CALDERA OF SEAMOUNT	BATIZA ET AL. (1977)
NFS	8^o48 N SEAMOUNT	-103.900	8.800	EAST PACIFIC RISE	OFF-AXIS SEAMOUNT	MN CRUSTS & NODULES	1,900	MN CRUSTS & NODULES IN CALDERA OF SEAMOUNT	LONSDALE ET AL. (1980)
NFS	WEST GALAPAGOS FRACTURE ZONE	-126.000	5.000	GALAPAGOS RIFT	TRANSFORM FAULT	METALLIFEROUS SEDIMENTS	>2,500	METALLIFEROUS SEDIMENTS	BOSTROM (1980)
NFS	GLAPAGOS RIFT, 101^oW (HESS DEEP)	-101.500	2.250	GALAPAGOS RIFT & EAST PACIFIC RISE	RIDGE INTERSECTION (GALAPAGOS RIFT & EAST PACIFIC RISE)	FE & MN CRUSTS	5,100	FE & MN CRUST CEMENTING SEDIMENTS	BURNETT & PIPER (1977), HEKINIAN ET AL. (1993)
NFS	GALAPAGOS RIFT, 95^oW	-95.167	2.500	GALAPAGOS SPREADING CENTER	MID-OCEAN RIDGE	MN CRUSTS (INACTIVE)	2,600	MN CRUSTS ON FAULT BLOCKS MARGINAL TO AXIAL RIFT	MOORE & VOGT (1976)
NFS	GALAPAGOS MOUNDS	-86.167	1.450	GLAPAGOS SPREADING CENTER	MID-OCEAN RIDGE	FE & MN CRUSTS AND MOUNDS	2,700	FE & MN OXIDE MOUNDS WITH ABUNDANT FE SILICATE (NONTRONITE) DEPOSITS	LONSDALE (1977), CORLISS ET AL. (1978), WILLIAMS ET AL. (1979), SCHRADER ET AL. (1980), HONNOREZ ET AL. (1981), LALOU ET AL. (1984)
NFS	WILKES FRACTURE ZONE	-110.000	-9.000	EAST PACIFIC RISE	RIDGE-TRANSFORM INTERSECTION	METALLIFEROUS SEDIMENTS	2,800	FE & MN ENRICHED SEDIMENTS	VARNAVAS (1988)
NFS	9-25^oS, EAST PACIFIC RISE (INCLUDING BAUER DEEP AND PERU BASIN)	-105.099	-14.392	EAST PACIFIC RISE	MID-OCEAN RIDGE (AXIAL VALLEY, RIDGE FLANK, AND DISTAL BASINS)	FE & MN CRUSTS AND SEDIMENTS, BASAL METALLIFEROUS SEDIMENTS	1,800-4,800	NUMEROUS SITES OF FE & MN CRUSTS AND SEDIMENTS IN AXIAL VALLEY AND BASAL METALLIFEROUS SEDIMENTS ON FLANK OF RIDGE	BONATTI & JOENSUU (1966), BOSTROM & PETERSEN (1969), VEEH & BOSTROM (1971), BENDER ET AL. (1971), DYMOND ET AL. (1973), SAYLES & BISCHOFF (1973), SAYLES ET AL. (1975), BOSTROM ET AL. (1976), HEATH & DYMOND (1977), LYLE ET AL. (1977), MCMURTRY & YEH (1981), MARCHIG ET AL. (1999)
NFS	NORTHERN YAMATO RISE	133.794	39.048	SEA OF JAPAN	SEAMOUNTS IN BACK-ARC BASIN	FE & MN CRUSTS	1,400-2,600	FE & MN CRUSTS ON VOLCANIC SEAMOUNTS	GORSHKOV ET AL. (1992)
NFS	SHINKUROSE BANK	140.167	33.567	IZU-BONIN ARC	FORE-ARC VOLCANO	MN CRUSTS (INACTIVE)	200	MN CRUSTS ON TOP OF VOLCANIC EDIFICE	FUJIOKA ET AL. (1992)
NFS	NISHI-SHICHITO RIDGE	138.750	31.367	IZU-BONIN ARC	ARC VOLCANO	MN CRUSTS	600-1,600	MN CRUSTS ON TOP OF VOLCANIC SEAMOUNT	USUI ET AL. (1986)
NFS	TORISHIMA RIFT	139.000	30.700	IZU-BONIN ARC	NASCENT BACK-ARC	FE-MN OXIDES	>2,000	FE-MN OXIDES	USUI ET AL. (1986)
NFS	MARIANA TROUGH SEAMOUNTS	-145.000	20.000	MARIANA TROUGH	VOLCANIC ISLANDS & SEAMOUNTS IN BACK-ARC BASIN	FE & MN CRUSTS	50-3,900	VARIOUS SITES OF FE & MN CRUSTS ON VOLCANIC ISLANDS AND SEAMOUNTS	HEIN ET AL. (1987a)
NFS	MARIANA BACK-ARC BASIN	144.751	18.038	MARIANA TROUGH	INTRAOCEANIC BACK ARC BASIN	FE & MN CRUSTS	3,654	MOUND-LIKE DEPOSITS OF FE & MN OXIDES	PUTEANUS ET AL. (1990), STUEBEN ET AL. (1995)
NFS	WEST MARIANA RIDGE	144.752	18.037	MARIANA TROUGH	INTRAOCEANIC BACK-ARC SPREADING CENTER	FE & MN CRUSTS	3,600	DEPOSITS OF FE & MN OXIDES NEAR BACK-ARC SPREADING CENTER	PUTEANUS ET AL. (1990)
NFS	MARIANA BACK-ARC BASIN	144.167	18.083	MARIANA TROUGH	INTRAOCEANIC BACK ARC BASIN	FE & MN CRUSTS AND MOUNDS	3,800	MOUND-LIKE DEPOSITS OF FE & MN OXIDES	LEINEN & ANDERSON (1981), HOBART ET AL. (1983), LEINEN ET AL. (1987)
NFS	WESTERN MANUS BASIN	147.000	-3.000	MANUS BACK-ARC BASIN, BISMARCK SEA	BACK-ARC SPREADING CENTER	FE OXIDE DEPOSITS (INACTIVE)	500-1,800	VARIOUS DEPOSITS OF FE OXIDE CRUSTS ON ALTERED LAVAS	METAL MINING AGENCY, JAPAN (1992)
NFS	WESTERN SAMOA	-172.500	-13.500	FIJI BASIN	HOTSPOT	FE & MN ENRICHED SEDIMENTS	2,000-3,000	WIDESPREAD FE & MN ENRICHED SEDIMENTS	EXON (1982)
NFS	NORTH FIJI BASIN	175.473	-14.075	NORTH FIJI BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	FE & MN CRUSTS	2,000-3,000	FE & MN CRUSTS ON OLD LAVA FLOWS	VON STACKELBERG ET AL. (1985)
NFS	NORTH FIJI BASIN	174.690	-15.451	NORTH FIJI BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	FE & MN CRUSTS	2,000-3,000	VARIOUS DEPOSITS OF FE & MN CRUSTS IN AXIAL VALLEY OF SPREADING CENTER	VON STACKELBERG ET AL. (1985), VON STACKELBERG ET AL. (1990a,b)
NFS	NORTHERN LAU BASIN	-176.250	-18.667	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	FE & MN CRUSTS	2,400-2,700	FE & MN CRUSTS ON OLD LAVA FLOWS	VON STACKELBERG ET AL. (1985)
NFS	CENTRAL LAU BASIN	-177.000	-18.500	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	METALLIFEROUS SEDIMENTS	2,400	FE & MN ENRICHED SEDIMENTS CONTAINING VOLCANICLASTIC MATERIAL	CRONAN ET AL. (1986), HODKINSON & CRONAN (1991)
NFS	SOUTHERN LAU BASIN, VALU FA RIDGE	-176.617	-22.250	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	FE & MN CRUSTS	>1,600	FE & MN CRUSTS WITH LOCAL FE SILICATE (NONTRONITE) ALONG ACTIVE SPREADING CENTER	VON STACKELBERG ET AL. (1985)
NFS	TONGA -KERMADEC RIDGE	-177.617	-26.933	LAU BASIN	REMNANT ARC	MN CRUSTS	1,500-2,000	MN CRUSTS ON OLD VOLCANIC RIDGE	MOORBY ET AL. (1984), CRONAN ET AL. (1982)
NFS	TONGA PLATFORM	-175.750	-23.000	TONGA FORE-ARC	FORE-ARC PLATFORM	FE & MN CRUSTS	1,500-2,800	FE & MN CRUSTS ON FORE-ARC TERRACE	HEIN ET AL. (1990)
NFS	CENTRAL EAST PACIFIC BASIN	-109.500	-13.500	EAST PACIFIC OCEAN	ABYSSAL PLAIN	FE & MN ENRICHED SEDIMENTS, BASAL METALLIFEROUS SEDIMENT	3,800-4,400	VARIOUS SITES OF FE & MN ENRICHED SEDIMENTS AND BASAL METALLIFEROUS SEDIMENTS IN THIS REGION	BOSTROM & RYDELL (1979), VON DER BORCH ET AL. (1971)
NFS	TIKI BASIN, MARQUESAS ISLANDS	-139.500	-13.000	SOUTH CENTRAL PACIFIC (MARQUESAS-TUAMOTU FRACTURE ZONES)	ABYSSAL PLAIN AND MID-PACIFIC SEAMOUNTS	FE & MN ENRICHED SEDIMENT AND MN NODULES	4,000-4,700	VARIOUS SITES OF FE & MN ENRICHED SEDIMENTS AND MN NODULES	GOLDBERG & ARRHENIUS (1958), HOFFERT ET AL. (1979), CLAUER ET AL. (1982), AOKI ET AL. (1979)
NFS	HAWAIIAN RIDGE, LINE ISLANDS	-157.500	15.000	HAWAIIAN ISLANDS & LINE ISLANDS	HOT SPOT VOLCANOES & FRACTURE ZONE	FE & MN CRUSTS	<5,000	FE & MN CRUSTS ON SEAMOUNTS OF HAWAIIAN RIDGE, LINE ISLAND CHAIN AND ALONG CLARION FRACTURE ZONE	HEIN ET AL. (1987b)
NFS	HAWAIIAN RIDGE, LINE ISLANDS	-164.800	9.150	MID-PACIFIC SEAMOUNTS	MID-PACIFIC SEAMOUNTS	FE & MN CRUSTS AND MN NODULES	2,000-4,000	FE & MN CRUSTS ON SEAMOUNTS, MN NODULES ON ABYSSAL PLAINS	HALBACH (1982)
NFS	CENTRAL SOUTH PACIFIC BASIN	-168.651	3.369	CENTRAL SOUTH PACIFIC OCEAN	ABYSSAL PLAIN	FE & MN ENRICHED METALLIFEROUS SEDIMENT	5,300	FE & MN ENRICHED METALLIFEROUS SEDIMENT	DYMOND ET AL. (1973)

DIS	TYRRHENIAN SEA, SUBMARINE VOLCANOES	12.000	40.000	TYRRHENIAN SEA	SEAMOUNTS, ARC VOLCANOES	FE & MN CRUSTS AND ENRICHMENT IN SEDIMENTS	2,000	FE & MN CRUSTS AND ENRICHMENT IN SEDIMENTS ON SUBMARINE VOLCANOES	BOSTROM ET AL. (1972)
DIS	BASEMENT RIDGE	-46.600	54.017	SOUTH LABRADOR SEA	FOSSIL MID-OCEAN RIDGE (FLANK)	BASAL METALLIFEROUS SEDIMENTS	3,700	BASAL METALLIFEROUS SEDIMENTS	LAUGHTON ET AL. (1972)
DIS	NORTH ATLANTIC BASIN	-20.000	40.000	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (RIDGE FLANK)	BASAL METALLIFEROUS SEDIMENTS	>4,700	BASAL SEDIMENTS ENRICHED IN FE & MN OXIDES (OVERLYING BASALTIC BASEMENT)	HOROWITZ & CRONAN (1976)
DIS	SOUTH ATLANTIC BASIN								----------
DIS	BERMUDA RISE	-55.622	32.143	BERMUDA RISE	ABYSSAL PLAIN	FE & MN RICH SEDIMENTS, MN CRUSTS AND MN NODULES	<5,000	VARIOUS SITES OF FE & MN ENRICHED SEDIMENTS, MN CRUSTS, AND MN NODULES ASSOCIATED WITH SCATTERED SEAMONTS AND VOCANIC RIDGES	PETERSON ET AL. (1970), AUMENTO ET AL. (1968)
DIS	SAN PABLO SEAMOUNT	-61.000	39.000	BERMUDA RISE	SHIELD VOLCANO	FE & MN RICH SEDIMENTS, MN CRUSTS AND MN NODULES	900	VARIOUS SITES OF FE &MN ENRICHED SEDIMENTS, MN CRUSTS, AND MN NODULES ASSOCIATED WITH SCATTERED SEAMONTS AND VOCANIC RIDGES	AUMENTO ET AL. (1968)
DIS	GUINEA BASIN	1.537	-0.607	SOUTH ATLANTIC	ABYSSAL PLAIN	METALLIFEROUS SEDIMENT	2,400	FE & MN ENRICHED METALLIFEROUS SEDIMENT	RIDOUT ET AL. (1984)
DIS	CARLSBERG RIDGE	62.345	-1.677	CARLSBERG RIDGE, NW INDIAN OCEAN	MID-OCEAN RIDGE (RIDGE FLANK)	BASAL METALLIFEROUS SEDIMENTS	4,500	BASAL SEDIMENTS ENRICHED IN FE (OVERLYING BASALTIC BASEMENT)	CRONAN (1980), RONA ET AL. (1981), CRONAN ET AL. (1974)
DIS	NINETY EAST RIDGE	88.483	-8.085	NE INDIAN OCEAN	FOSSIL HOTSPOT RIDGE FLANK	BASAL METALLIFEROUS SEDIMENTS	5,300	BASAL METALLIFEROUS SEDIMENTS (OCERLYING BASALTIC BASEMENT)	VON DER BORCH ET AL. (1974)
DIS	SOUTHWEST INDIAN RIDGE	57.741	-28.091	SW INDIAN OCEAN	MID-OCEAN RIDGE (FLANK)	BASAL METALLIFEROUS SEDIMENTS	>4,000	BASAL METALLIFEROUS SEDIMENTS	BOSTROM ET AL. (1969)
DIS	NORTHERN EXPLORER RIDGE	-131.937	49.675	NORTHERN JUAN DE FUCA RIDGE	MID-OCEAN RIDGE (RIDGE FLANK)	BASAL METALLIFEROUS SEDIMENTS	3,200	BASAL SEDIMENTS ENRICHED IN FE (OVERLYING BASALTIC BASEMENT)	BORNHOLD ET AL. (1981)
DIS	CENTRAL NORTH PACIFIC BASIN	-132.131	36.064	NORTH PACIFIC (MENDOCINO - MURRAY FRACTURE ZONES)	MID-OCEAN RIDGE (RIDGE FLANK)	BASAL METALLIFEROUS SEDIMENTS	>3,000	BASAL SEDIMENTS ENRICHED IN FE (OVERLYING BASALTIC BASEMENT)	DYMOND ET AL. (1973)
DIS	23^o30 N, EAST PACIFIC RISE	-109.816	22.128	EAST PACIFIC RISE	MID-OCEAN RIDGE (RIDGE FLANK)	BASAL METALLIFEROUS SEDIMENTS	3,100	BASAL METALLIFEROUS SEDIMENTS (OVERLYING BASALTIC BASEMENT)	DEVINE & LEINEN (1981), LEINEN (1981), YEATS ET AL. (1981)
DIS	15^oN - 15^oS, FLANK OF EAST PACIFIC RISE	-110.000	0.000	EAST PACIFIC RISE	MID-OCEAN RIDGE (RIDGE FLANK AND DISTAL BASINS)	BASAL METALLIFEROUS SEDIMENTS	3,000-5,000	BASAL METALLIFEROUS SEDIMENTS	CRONAN (1973), LEINEN & STAKES (1979), HEATH & LYLE (1982)
DIS	9-25^oS, EAST PACIFIC RISE (INCLUDING BAUER DEEP AND PERU BASIN)	-105.099	-14.392	EAST PACIFIC RISE	MID-OCEAN RIDGE (AXIAL VALLEY, RIDGE FLANK, AND DISTAL BASINS)	FE & MN CRUSTS AND SEDIMENTS, BASAL METALLIFEROUS SEDIMENTS	1,800-4,800	NUMEROUS SITES OF FE & MN CRUSTS AND SEDIMENTS IN AXIAL VALLEY AND BASAL METALLIFEROUS SEDIMENTS ON FLANK OF RIDGE	BONATTI & JOENSUU (1966), BOSTROM & PETERSEN (1969), VEEH & BOSTROM (1971), BENDER ET AL. (1971), DYMOND ET AL. (1973), SAYLES & BISCHOFF (1973), SAYLES ET AL. (1975), BOSTROM ET AL. (1976), HEATH & DYMOND (1977), LYLE ET AL. (1977), MCMURTRY & YEH (1981)
DIS	WEST PHILIPPINE BASIN	131.417	12.000	PHILIPPINE BASIN	BACK-ARC BASIN ON FLANK OF INACTIVE SPREADING CENTER	BASAL METALLIFOERUS SEDIMENTS	5,200-5,800	VARIOUS SITES OF BASAL METALLIFEROUS SEDIMENTS (OVERLYING BASALTIC BASEMENT)	BONATTI ET AL. (1979)
DIS	CENTRAL EAST PACIFIC BASIN	-127.415	-15.042	EAST PACIFIC OCEAN	ABYSSAL PLAIN	FE & MN ENRICHED SEDIMENTS, BASAL METALLIFEROUS SEDIMENT	3,800-4,400	VARIOUS SITES OF FE & MN ENRICHED SEDIMENTS AND BASAL METALLIFEROUS SEDIMENTS IN THIS REGION	BOSTROM & RYDELL (1979), VON DER BORCH ET AL. (1971)
DIS	NORTH PACIFIC NODULE AREA	-128.299	13.144	CLARION-CLIPPERTON FRACTURE ZONES	ABYSSAL PLAIN	MN NODULES AND MINOR METALLIFEROUS SEDIMENT	4,300	MN NODULES AND MINOR FE & MN OXIDES IN METALLIFEROUS SEDIMENTS	BISCHOFF & ROSENBAUER (1977), BISCHOFF ET AL. (1979)
DIS	NORTHERN LAU BASIN	-177.500	-18.500	NORTHERN LAU BASIN	BACK-ARC SPREADING CENTER	FE & MN-RICH SEDIMENTS	1,500	BASAL METALLIFEROUS SEDIMENTS (OVERLYING BASALTIC BASEMENT)	HODKINSON & CRONAN (1995)

VSD	VITYAZ FRACTURE ZONE	68.583	-5.400	CARLSBERG RIDGE, NW INDIAN OCEAN	RIDGE-TRANSFORM INTERSECTION	VEIN AND DISSEMINATED SULFIDES	3,500	VEIN AND DISSEMINATED SULFED AND FE OXIDES IN EXPOSED FAULT BLOCK	ROZANOVA & BATURIN (1971), BATURIN & ROZANOVA (1975), RONA ET AL. (1981)
VSD	25^o50 N, MID-ATLANTIC RIDGE	-44.983	25.808	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (FAULT BLOCK)	VEIN AND DISSEMINATED SULFIDES	3,000	QUARTZ VEINS IN ALTERED BASALTS WITH VEIN AND DISSEMINATED SULFIDES	RONA ET AL. (1982)
VSD	24^o20 N, MID-ATLANTIC RIDGE	-46.200	24.350	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (FAULT BLOCK)	DISSEMINATED SULFIDES	3,200	QUARTZ VEIN IN ALTERED BASALT WITH DISSEMINATED SULFIDES	RONA ET AL. (1980)
VSD	23^o35 N, MID-ATLANTIC RIDGE	-45.000	23.583	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (FAULT BLOCK)	DISSEMINATED SULFIDES	3,500	QUARTZ VEIN IN ALTERED BASALT WITH DISSEMINATED SULFIDES	DELANEY ET AL. (1987), KELLEY AND DELANEY (1987)
VSD	22^o30 N, MID-ATLANTIC RIDGE	-45.005	22.500	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (FAULT BLOCK)	DISSEMINATED SULFIDES	2,800	QUARTZ VEIN IN ALTERED BASALT WITH DISSEMINATED SULFIDES	RONA ET AL. (1982)
VSD	15^o50 N, MID-ATLANTIC RIDGE	-46.667	15.867	MID-ATLANTIC RIDGE	RIDGE-TRANSFORM INTERSECTION	VEIN AND DISSEMINATED SULFIDES AND FE OXIDES	3,000	VEIN AND DISSEMINATED SULFED AND FE OXIDES IN EXPOSED FAULT BLOCK	AKIMTSEV ET AL. (1991)
VSD	15-20^o FRACTURE ZONE	-44.800	15.083	MID-ATLANTIC RIDGE	RIDGE-TRANSFORM INTERSECTION	HYDROTHERMAL PLUME	2,600-3,800	ACTIVE METHANE DEGASSING IN AREA OF SERPENTINIZED PERIDOTITE AND GABBRO	CHALROU ET AL. (1998)
VSD	14^o43 N, MID-ATLANTIC RIDGE	-44.867	14.717	MID-ATLANTIC RIDGE	RIDGE-TRANSFORM INTERSECTION	DISSEMINATED SULFIDES	3,000	DISSEMINATED SULFIDES IN ALTERED BASALT	AKIMTSEV ET AL. (1991)
VSD	12^o48 N, MID-ATLANTIC RIDGE	-44.788	12.800	MID-ATLANTIC RIDGE	MID-OCEAN RIDGE (FAULT BLOCK)	VEIN AND DISSEMINATED SULFIDES	2,400	VEIN AND DISSEMINATED SULFIDES IN ALTERED BASALT	RONA ET AL. (1982)
VSD	CENTRAL BERMUDA RISE	-64.248	31.187	BERMUDA RISE	ABYSSAL PLAIN	HYDROTHERMAL VEINS IN ALTERED BASALT	4,800	HYDROTHERMAL VEINS IN ALTERED BASALT (MINERALIZATION NOT DESCRIBED)	TUCHOLKE ET AL. (1979)
VSD	VEMA FRACTURE ZONE	-41.800	10.850	EQUATORIAL MID-ATLANTIC	TRANSFORM FAULT	VEIN AND DISSEMINATED SULFIDES	3,100	VEIN AND DISSEMINATED SULFIDES IN ALTERED BASALT	BONATTI ET AL. (1976)
VSD	ROMANCHE FRACTURE ZONE	-24.513	-0.977	EQUATORIAL MID-ATLANTIC	TRANSFORM FAULT	VEIN AND DISSEMINATED SULFIDES	3,100	VEIN AND DISSEMINATED SULFIDES IN ALTERED BASALT	BONATTI ET AL. (1976)
VSD	BOUVET TRIPLE JUNCTION	-0.667	-55.833	SOUTH ATLANTIC	RIDGE-HOTSPOT INTERSECTION	DISSEMINATED SULFIDES		QTZ-PYRITE-CHALCOPYRITE BRECCIA	LISITISYN ET AL. (1999), SIMONOV ET AL. (1997)
VSD	PHOENIX RIDGE	-65.500	-60.000	SOUTHEAST PACIFIC	MID-OCEAN RIDGE	DISSEMINATED SULFIDES IN ALTERED BASALT		DREDGED, INTENSELY ALTERED BASALT HYALOCLASTITE	HERZIG ET AL. (2001)
VSD	BLANCO TRANSFORM	-127.100	43.217	GORDA RIDGE	TRANSFORM FAULT	VEIN AND DISSEMINATED SULFIDES	4,100	VEIN AND DISSEMINATED SULFIDES IN ALTERED BASALT	HART ET AL. (1986), HART ET AL. (1990)
VSD	EAST BLANCO FRACTURE ZONE	-129.708	44.000	SOUTHERN JUAN DE FUCA RIDGE	RIDGE-TRANSFORM INTERSECTION	DISSEMINATED SULFIDES		DISSEMINATED SULFIDES (NOT DESCRIBED)	JUTEAU ET AL.
VSD	DSDP HOLE 504B	-83.730	1.227	COSTA RICA RIFT	FOSSIL OCEANIC RIDGE	VEIN AND DISSMEINATED SULFIDES	3,500	VEIN AND DISSEMINATED SULFIDES IN QUARTZ VEINS WITHIN ALTERED BASALT FROM PILLOW-DIKE TRANISTION ZONE (650 M AND 1,300 M BELOW BSF)	ALT ET AL. (1986), SCHOPS & HERZIG (1990)
VSD	18-22^o S , EAST PACIFIC RISE	-113.417	-20.000	EAST PACIFIC RISE	MID-OCEAN RIDGE	VEIN AND DISSEMINATED SULFIDES	2,600-3,300	SEVERAL SITES OF STOCKWORK AND BRECCIATED BASALTS	BACKER ET AL. (1985)
VSD	MARIANA BACK-ARC BASIN	145.180	17.945	MARIANA TROUGH	BACK-ARC BASIN	DISSEMINATED SULFIDES IN ALTERED BASALT	3,600	DISSEMINATED SULFIDES IN ALTERD BASALT (130-170 M BSF)	NATLAND & HEKINIAN (1982)
VSD	CONICAL SEAMOUNT	152.666	-3.333	NEW IRELAND BASIN (SOUTH LIHIR)	SUBMARINE VOLCANO IN RIFTED FORE-ARC BASIN	VEIN AND DISSEMINATED SULFIDES	1,050	DISSEMINATED PYRITE, VEIN PYRITE-SPHALERITE, MINOR AS-SB MINERALIZATION, EPITHERMAL-TYPE GOLD	PETERSEN ET AL. (2002)
VSD	NORTH FIJI BASIN	177.000	-14.500	NORTH FIJI BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	DISSEMINATED SULFIDES	2,000-3,000	LOCAL OCCURRENCES OF DISSEMINATED SULFIDES IMPREGNATING BASALTIC LAVAS ALONG SPREADING CENTER	VON STACKELBERG ET AL. (1985), VON STACKELBERG ET AL. (1990a,b)
VSD	NORTH FIJI BASIN	177.417	-16.167	NORTH FIJI BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	DISSEMINATED SULFIDES	2,000-3,000	LOCAL OCCURRENCES OF DISSEMINATED SULFIDES IMPREGNATING BASALTIC LAVAS ALONG SPREADING CENTER	VON STACKELBERG ET AL. (1985), VON STACKELBERG ET AL. (1990a,b)
VSD	SOUTHERN LAU BASIN	-176.617	-22.250	LAU BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	DISSEMINATED SULFIDES	>1,600	LOCAL OCCURRENCES OF DISSEMINATED SULFIDES IMPREGNATING BASALTIC LAVAS ALONG SPREADING CENTER	VON STACKELBERG ET AL. (1985)
VSD	CALYPSO VENTS	177.117	-37.683	WHITE ISLAND-HAVRE TROUGH	BACK-ARC RIFT	VEIN AND DISSEMINATED SULFIDES	190	SUBMARINE EPITHERMAL MINERALIZATION, GAS BUBBLING, NATIVE SULFUR, SILICA SINTERS, ANHYDRITE CHIMNEYS (BOILING VENTS), 180-201^oC AVTIVE VENTS	SARANO ET AL. (1989), STOFFERS ET AL. (1999a,b,c)

PLUME	GULF OF ADEN	49.200	12.500	AFAR RIFT	OCEANIC RIFT (EARLY OPENING)	HYDROTHERMAL PLUME	600-800	HYDROTHERMAL PLUMES OVER TWIN PEAK SEAMOUNTS, 60 MI SE OF ADEN	GAMO ET AL. (2001)
PLUME	RODRIGUEZ HOT SPOT, CENTRAL INDIAN RIDGE	70.000	-19.500	CENTRAL INDIAN RIDGE	RIDGE-HOTSPOT INTERSECTION	HYDROTHERMAL PLUMES		FIVE HYDROTHERMAL PLUMES ON CENTRAL INDIAN RIDGE ADJACENT TO RODRIGUEZ HOTSPOT	GERMAN T AL. (2001)
PLUME	NORTH RODRIGUEZ TRIPLE JUNCTION, CENTRAL INDIAN RIDGE	70.033	-25.317	CENTRAL INDIAN RIDGE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	2,500	HYDROTHERMAL PLUME	FUJIMOTO ET AL. (1999). GAMO ET AL. (1999)
PLUME	SOUTHEAST INDIAN RIDGE	74.173	-28.061	SOUTHEAST INDIAN RIDGE	MID-OCEAN RIDGE	HYDROTHERMAL PLUMES	2,600-5,000	HYDROTHERMAL PLUMES ALONG SEIR NEAR AMSTERDAM-ST. PAUL PLATEAU	SCHEIRER ET AL. (1991)
PLUME	SALDANHA AREA, LUCKY STRIKE	-33.417	36.567	SOUTH ATLANTIC, AZORES	RIDGE-TRANSFORM INTERSECTION	HYDROTHERMAL PLUME	2200	HYDROTHERMAL PLUME, WATER COLUMN METHANE ANOMALY IN AREA OF SERPENTINIZED PERIDOTITE AND GABBRO	BARRIGA ET AL. (1998)
PLUME	EAST SCOTIA RIDGE	-30.333	-56.083	SOUTH ATLANTIC	BACK-ARC SPREADING CENTER	HYDROTHERMAL PLUME	2,650	HYDROTHERMAL PLUME	LIVERMORE ET AL. (1999), GERMAN ET AL. (1999)
PLUME	EAST SCOTIA RIDGE	-30.000	-57.500	SOUTH ATLANTIC	BACK-ARC SPREADING CENTER	HYDROTHERMAL PLUME	2,650	HYDROTHERMAL PLUME	LIVERMORE ET AL. (1999), GERMAN ET AL. (1999)
PLUME	EAST SCOTIA RIDGE	-29.917	-60.050	SOUTH ATLANTIC	BACK-ARC SPREADING CENTER	HYDROTHERMAL PLUME	2,650	HYDROTHERMAL PLUME	LIVERMORE ET AL. (1999), GERMAN ET AL. (1999)
PLUME	KNIPOVICH RIDGE	-8.000	76.783	ARCTIC RIDGE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	3,500	HYDROTHERMAL PLUME, WATER COLUMN TEMPERATURE ANOMALY	PEDERSEN & SUNDVOR (1998)
PLUME	10^o08'N, EAST PACIFIC RISE	-104.233	10.133	EAST PACIFIC RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	2,600	HYDROTHERMAL PLUME	KASTENS ET AL. (1986)
PLUME	10^o56'N, EAST PACIFIC RISE	-103.733	10.933	EAST PACIFIC RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	2,600	HYDROTHERMAL PLUME	ARGO-RISE (1988)
PLUME	11^o47'S, EAST PACIFIC RISE	-110.600	-11.783	EAST PACIFIC RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	2,600	HYDROTHERMAL PLUME	ARGO-RISE (1988)
PLUME	11^o05-35'N, EAST PACIFIC RISE	-103.725	11.333	EAST PACIFIC RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	2,600	LARGE HYDROTHERMAL PLUME AREA	LUPTON ET AL. (1993)
PLUME	NORTHERN CHILE RISE	-92.566	-38.717	CHILE RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	3,330	HYDROTHERMAL PLUME	KARSTEN ET AL. (1999)
PLUME	NORTHERN CHILE RISE	-91.583	-39.050	CHILE RISE	MID-OCEAN RIDGE	HYDROTHERMAL PLUME	3,450	HYDROTHERMAL PLUME	KARSTEN ET AL. (1999)
PLUME	SOUTHERN MARIANA TROUGH	143.533	12.717	MARIANA BACK-ARC	INTRA-OCEANIC BACK-ARC SPREADING CENTER	HYDROTHERMAL PLUME	3,100	HYDROTHERMAL PLUME ABOVE BACK-ARC SEAMOUNT	GAMO ET AL. (1989)
PLUME	VAILULU'U SEAMOUNT, SAMOA	-179.060	-14.210	SAMOAN ARCHIPELAGO	HOTSPOT	HYDROTHERMAL PLUME		HYDROTHERMAL PLUME	STAUDIGEL ET AL. (2001)
PLUME	FIJI BASIN	173.500	-18.833	FIJI BASIN	INTRA-OCEANIC BACK-ARC SPREADING CENTER	HYDROTHERMAL PLUME	2,000-3,000	HYDROTHERMAL PLUME, METHANE AND MN ANOMALIES; 1987 MEGAPLUME	NOJIRI ET AL. (1989(
PLUME	JEAN-CHARCOTT TROUGH	167.547	-12.208	NEW HEBRIDES	BACK-ARC SPREADING CENTER, SEAMOUNT	HYDROTHERMAL PLUME	1,600	HYDROTHERMAL PLUME	MAILLET ET AL. (1995)
PLUME	JEAN-CHARCOTT TROUGH	167.788	-12.543	NEW HEBRIDES	BACK-ARC SPREADING CENTER, SEAMOUNT	HYDROTHERMAL PLUME	1,425	HYDROTHERMAL PLUME	MAILLET ET AL. (1995)


KEY:
PMS = Polymetallic Massive Sulfides
LTH - Low-Temperature Hydrothermal Precipitates
NFS = Near-Field Metalliferous Sediment
DIS = Distal Metalliferous Sediment
VSD = Vein Sulfide Deposits
PLUME = Hydrorhermal Plume Signal

OTHER REGIONS

Last Updated on 12/9/02