The ISA's Central data Repository

NE-Pacific_Gorda_Ridge

Northeast Pacific: Gorda Ridge

Includes Escanaba Trough

SAMPLE	Method	Au	Ag (1)	Ag (2)	As	Be	Bi	Cd	Co	Cr	Ga	Ge	Hg	In	Mn	Mo	Ni	Rb	Sb	Sc	Se	Sn	Sr	Te	Tl	U	V	W	Y	Zr	Cu	Fe	Zn	Pb	S	SiO₂	Ba	Ca	CO₂	Corg	H₂O	H₂O^-	H₂O⁺	Al₂O₃	MgO	TiO₂	Na₂O	K₂O	P₂O₅	Ir	Pd	Pt	Cl	F	B	Br	Cs	Hf	Li	Nb	Ta	Th	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	Sample Type	Mineralogy	Description	Location 1	Location 2	Location 3	LatitudeN	LongitudeW	DecLat	DecLong	Depth	References
		ppb	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	wt.%	ppb	ppb	ppb	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm


Gorda Ridge
Escanaba Trough
ALV2033-1	a37	<5		33	4200		13		5	<1					230	<1	15		130		179	620	4				4		0.3		1.20	27.50	4.60	0.120	39.20	0.20	0.009	0.05						0.06	0.10																																pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	Central Hill	41°00.219	127°29.561	41.00365	-127.493	3274	Koski et al., 1994
ALV2033-3B	a37	1640		570	5600		<0.5		32						200	3	<1		10		<0.5	139	770				10				0.27	3.37	24.90	1.10	22.00	2.98	9.58	0.16						0.06	0.06																																barite	ba	barite (chimney)	Escanaba Trough	NESCA	Central Hill					3264	Koski et al., 1994
ALV2033-5A	a37	1290		25	1710		25		320	<1					<100	2	<3		73		22	15	110				<2		0.1		1.60	40.50	1.20	0.027	31.24	1.68	5.73	0.07						0.06	0.04																																pyrrhotite-rich sulfide	po-ba	pyrrhotite-rich sulfide with barite	Escanaba Trough	NESCA	Central Hill					3242	Koski et al., 1994
ALV2033-5B	a37	3200		60	6090		43		320	<1					<100	3	<3		79		3.6	23	120				3		0.1		3.30	26.40	0.61	0.001	34.90	0.25	5.82	0.10						0.04	0.10																																pyrrhotite-rich sulfide	po-ba	pyrrhotite-rich sulfide with barite	Escanaba Trough	NESCA	Central Hill					3242	Koski et al., 1994
ALV2035-1A	a37	8890		52	9320		820		3000	110					100	17	<3		296		3	405	500				24		0.1		3.00	31.00	2.70	0.340	25.68	0.35	10.03	0.14						0.07	0.09																																pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	SW hill at NESCA					3277	Koski et al., 1994
ALV2035-2	a37	1580		2	80		73		1200	<1					100	47	12		4		139	22	4				<2		1.5		1.80	54.90	0.02	0.002	38.41	0.20	0.02	0.07						0.03	0.05																																pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide (mound)	Escanaba Trough	NESCA	SW hill at NESCA					3282	Koski et al., 1994
ALV2036 (N=3))	a37	830		1	30		5		20						<100	4	1		12		37	9	1500				9				0.05	0.62	0.05	0.040	17.12	10.44	0.28	20.54						0.41	6.10																																anhydrite	anhydrite	sulfate (massive chimney, 217°C)	Escanaba Trough	NESCA	Central Hill	41°00.014	127°29.621	41.00023333	-127.494	3230	Koski et al., 1994
ALV2037-1A	a37	1080		9	490		54		1000	<1					100	24	4		5		108	6	5				<2				2.30	50.60	0.03	0.001	36.04	0.24	0.05	0.06						0.03	0.03																																pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	Central Hill					3217	Koski et al., 1994
ALV2037-1B	a37	1440		10	520		66		510	<1					<100	7	6		4		81	8	3				<2		0.7		2.60	51.20	0.03	0.001	37.02	0.19	0.04	0.05						0.03	0.03																																pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	Central Hill					3217	Koski et al., 1994
ALV2038-2A	a37	1160		13	910		25		660	130					230	14	61		12		164	40	3				2		1.4		2.30	31.90	0.04	0.004	36.60	0.23	0.004	0.07						0.03	0.07																																pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	9 km north of Central Hill					3268	Koski et al., 1994
ALV2039-3	a37	10140		160	1620		125		890	1					<100	51	34		69		130	60	3				6		0.2		20.60	25.50	1.20	0.340	37.12	0.20	0.03	0.04						0.02	0.04																																pyrrhotite-chalcopyrite	po-cp	pyrrhotite-chalcopyrite	Escanaba Trough	NESCA	10 km north of Ccentral Hill					3212	Koski et al., 1994
ALV2039-4A	a38	3270		170	15500		8		210	3					100	<1	<3		749		88		37				3				1.00	30.30	5.90	1.10	39.34	2.02	2.06	0.05						0.03	0.05																																pyrrhotite-rich sulfide	po?	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	Edifice Rex	41°05.507	127°28.636	41.09178333	-127.477	3199	Koski et al., 1994
ALV2039-5B	a37	2940		150	4760		54		370	<1					100	16	<3		521		148	63	40				<2		0.9		1.70	43.60	4.80	1.10	33.14	0.22	0.67	0.06						0.04	0.06																																pyrrhotite-rich sulfide	po?	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	Edifice Rex	41°05.485	127°28.642	41.09158333	-127.477	3215	Koski et al., 1994
ALV2040-2 (N=2)	a37	6450		156	840		1		13						200	17	<1		70		244	26	2800				18				0.25	5.30	1.60	0.190	16.04	15.60	14.51	0.15						0.27	0.17																																baritic sulfate sinter	barite	baritic sulfate sinter	Escanaba Trough	NESCA	Central Hill					3231	Koski et al., 1994
L286-14D-1	a38	<200		681	17000		40	630	<2	<2		7	<2		15		<1		960	<1	1000	700	<50		1		<2		<10		1.82	33.10	20.30	7.60	32.64	<0.01	2.51	0.01		0.07				<0.01	0.05	<0.01																															polymetallic massive sulfide		polymetallic massive sulfide	Escanaba Trough	NESCA	north of Central Hill					3320	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L286-14D-1I	a38	<100		150	54000		95	1800				<2	<2		50		3		480	<1	1400	70	3		1		<10				4.64	21.10	35.10	1.40	31.70	0.44	0.03	0.02		0.08				0.10	0.08	<0.01																															polymetallic massive sulfide	iss-sp-asp	polymetallic massive sulfide	Escanaba Trough	NESCA	north of Central Hill					3320	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L286-14D-1M	a38	<100		200	17600		88	940				<2	<2		15		<1		550	<1	500	70	3		1		<10				1.62	29.30	26.10	2.30	33.70	<0.01	0.10	0.00		0.08				<0.01	0.01	<0.01																															polymetallic massive sulfide	po-sp-iss-asp	polymetallic massive sulfide	Escanaba Trough	NESCA	north of Central Hill					3320	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L286-14D-1O	a38	<100		3000	1000		73	76				100	127		15	20	3		16000	<1	400	1410	15		24		<10				0.24	21.20	22.50	20.70	28.51	<0.01	0.25	0.06		0.50				<0.01	0.22	<0.01																															polymetallic massive sulfide	po-sp-asp	polymetallic massive sulfide	Escanaba Trough	NESCA	north of Central Hill					3320	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L286-14D-2	a38	<200		184	25000		64	1975	<2	<2		25	22		35		1.5		850	<1	510	500	<50		1		<2		<10		0.99	17.90	42.60	1.05	32.70	0.34	0.009	0.02		0.03				0.11	0.09	<0.01																															polymetallic massive sulfide		polymetallic massive sulfide	Escanaba Trough	NESCA	north of Central Hill					3320	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L286-14D-6	a38	<200		339	27500		9.7	150	3	20		<2	<2		7000		15		8700	2	<5	1500	<50		1		<2		15		0.26	22.90	7.10	13.70	24.00	13.80	0.35	0.03		2.24				3.40	0.25	<0.01									7																						sediment cemented by sulfide		sediment cemented by sulfide	Escanaba Trough	NESCA	north of Central Hill					3320	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L286-18D	a37	<200		1.5	5500		27	4.8	2	1		<2	<2		7		1.5		132	<1	525	500	<50		1		<2		<10		1.01	35.20	0.07	<0.010	42.10	<0.01	<0.001	0.03		0.13				<0.01	0.12	<0.01																															pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	2 km south of Central Hill					3300	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L286-25D	a37	<20		1.5	<200		12	4.5	<2	1		<2	<2		7		1.5		172	<1	380	200	<50		1		<2		<10		0.42	57.00	0.11	<0.010	36.60	0.34	0.003	0.01		0.11				0.16	0.05	<0.01																															pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	SW hill at NESCA					3250	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
SC 658-R2	a37	<100		2	<200		6	0.8	15			<2	106		1500		15		9		<5	1	15000				70		10		0.02	1.30	0.02	<0.010	14.11	1.60	30.98	0.21		0.08				0.38	0.27	<0.01																															barite (chimney)	ba	barite (chimney)	Escanaba Trough	NESCA	northern flank of Central Hill					3265	Koski et al., 1994
SC 658-R3	a37	<100		15	<200		57	16	500	<2		<2	<2		100		5		8		71	1	100				<2		10		0.55	48.10	0.61	0.070	40.06	0.35	0.72	0.01		0.05				<0.01	0.07	<0.01																															pyrrhotite-rich sulfide	po	pyrrhotite-rich talus	Escanaba Trough	NESCA	Central Hill	40°59.998	127°29.602	40.99996667	-127.493	3238	Koski et al., 1994
SC 658-R4	a37	<100		15	<200		53	6.0	300	<2		<2	<2		15		5		17		<5	1	3				<2		10		2.06	52.50	0.12	0.080	38.81	<0.01	0.009	0.01		0.09				<0.01	0.04	<0.01																															pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	NESCA	Central Hill	41°00.233	127°29.644	41.00388333	-127.494	3265	Koski et al., 1994
SC 659-R1	a37	2200		150	2000		68	47	700	2		<2	<2		300		30		200		324	30	30				<2		<10		7.70	17.90	1.38	0.260	54.24	1.86	0.23	0.10						0.76	0.17	<0.01																															pyrrhotite-rich sulfide	po	pyrrhotite-rich chimney	Escanaba Trough	NESCA	in trough near west wall of axial valley; 1.5 km north of Central Hill					3322	Koski et al., 1994
TUL 89-8G	a37	1110		73	2900		102		410	32					200	17	<3		162		67	96	130				43				2.30	38.80	3.00	0.160	30.34	8.20	4.21	0.14						1.51	1.23	<0.01																															pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide (core)	Escanaba Trough	NESCA	30 m south of 220°C vent at Central Hill					3240	Koski et al., 1994
SC 766-1	a37	5		240	2600		0.1		21						200	3	<1		1228		0.16	145	140				21		0.1		0.06	3.18	19.00	2.80	21.00	1.34	12.98	0.11						0.02	0.04	<0.01																															barite (chimney)	ba	barite (chimney)	Escanaba Trough	NESCA	Central Hill					3227	Koski et al., 1994
																																														<0.01
SC 662-R1	a37	<100		150	500		22	67	700	<2		30	51		15		10		140		<5	20	90				<2		10		2.22	48.20	2.05	0.350	35.40	<0.01	0.27	0.01						<0.01	0.06	<0.01																															pyrrhotite-rich sulfide	po-cp-ba	chimney	Escanaba Trough	SESCA	North Hill	40°47.393	127°30.299	40.78988333	-127.505	3237	Koski et al., 1994
L186-16D-1	a37	1400		67.5	2000		44	270	500	<2		15	<2		50		7		530	<1	95	70	130		10		<2		<10		4.62	33.30	2.30	0.650	37.50	0.95	2.70	0.02		0.14				<0.01	0.07	<0.01									10																						pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	SESCA	East Hill	40°46	127°30	40.76666667	-127.5	3230	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L186-16D-2	a37	2000		387	7200		2	830	30	5		150	43		500		2		2700	<1	<5	150	<200		43		<2		30		0.49	6.40	17.30	4.38	21.09	2.21	23.01	0.08		0.15				0.16	0.13	0.01																															barite-rich crust	ba	barite-rich crust	Escanaba Trough	SESCA	East Hill	40°46	127°30	40.76666667	-127.5	3230	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L186-24D-1	a37	<200		14	300		25	4.4	10	<2		<2	<2		100		2		24	<1	180	300	<50		1		<2		<10		1.21	42.00	0.34	0.200	45.20	<0.01	0.04	0.01		0.32				<0.01	0.11	<0.01																															pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	SESCA	Hill 3170	40°46	127°31	40.76666667	-127.517	3220	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L186-24D-1	a37	740		8	10		43		460	<1					<100	45	<1		4		72	115	6				<2		0.1		2.90	41.50	0.08	0.020	39.30	0.40	0.11	0.08						0.03	0.14																																pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	SESCA	Hill 3170	40°46	127°31	40.76666667	-127.517	3220	Benninger and Koski, 1987; Koski et al. 1988; Koski et al., 1994
L186-24D-16-2	a37	160		2	2500		20		120	<1					160	275	<1		262		25	9	91				75		1.8		0.72	40.10	0.16	0.200	14.10	4.70	0.18	0.18						0.17	0.71																																pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	SESCA	Hill 3170	40°46	127°31	40.76666667	-127.517	3220	Koski et al., 1994
L186-24D-16-3	a37	40		4	270		29		220	<1					230	20	13		21		194	28	6				<2		0.1		0.78	35.20	0.13	0.210	40.48	0.19	0.02	0.06						0.03	0.11																																pyrrhotite-rich sulfide	po	pyrrhotite-rich sulfide	Escanaba Trough	SESCA	Hill 3170	40°46	127°31	40.76666667	-127.517	3220	Koski et al., 1994

OTHER REGIONS

Last Updated on 12/11/02