Geofluids

Research Article

Dispersion and Intersection of Hydrothermal Plumes in the Manus Back-Arc Basin, Western Pacific

Table 1

Measured compositions of water column samples from the PACMANUS hydrothermal field.


Station	Sample	Depth (m)	Velocity (m/s)	Turbidity (NTU)	pHv25 °C	Ca (mmol/kg)	Mg (mmol/kg)	K (mmol/kg)	Na (mmol/kg)	Cl (mmol/kg)	SO₄^2- (mmol/kg)	Fe (μmol/kg)	Mn (μmol/kg)

P-W07 (3^°43.5004S, 151^°40.2317E; depth: 1719 m)
	P-W07-1	1629	0.089	0.089	7.64	9.57	50.7	10.5	505	543	30.2	0.028	0.142
	P-W07-4	1601	0.096	0.254	7.61	9.49	50.8	10.5	496	548	29.9	0.027	0.288
	P-W07-5	1575	0.067	0.085	7.64	9.52	50.5	10.8	507	545	29.7	0.017	0.014
	P-W07-6	1551	0.074	0.089	7.68	9.55	51.2	10.9	494	551	29.8	0.024	0.010
	P-W07-7	1525	0.098	0.09	7.69	9.58	51.1	10.9	478	521	30.3	0.028	0.011
	P-W07-8	1500	0.085	0.092	7.68	9.50	50.8	10.5	466	535	29.2	0.017	0.010
	P-W07-9	1475	0.059	0.087	7.64	9.41	51.2	10.9	483	544	29.8	0.044	0.012
	P-W07-10	1451	0.059	0.094	7.66	9.52	51.0	11.0	481	550	29.9	0.021	0.009
	P-W07-11	1425	0.095	0.077	7.67	9.65	51.9	10.9	479	559	29.7	0.020	0.007
	P-W07-12	1400	0.081	0.065	7.66	9.65	50.8	10.5	473	535	30.3	0.026	0.008
	P-W07-13	1351	0.020	0.055	7.67	9.77	52.4	10.9	491	555	29.2	0.011	0.007
	P-W07-14	1300	0.078	0.041	7.68	9.67	50.0	10.8	481	534	29.2	0.016	0.006
	P-W07-15	1251	0.038	0.037	7.67	9.59	50.8	10.6	471	541	29.2	0.011	0.005
	P-W07-16	1201	0.085	0.037	7.67	9.42	49.8	10.5	473	551	29.0	0.011	0.005
	P-W07-17	1001	0.043	0.032	7.70	9.52	51.0	11.2	482	534	29.5	0.017	0.002
	P-W07-20	800	0.080	0.038	7.69	9.36	51.0	10.2	435	548	30.0	0.012	0.002
	P-W07-21	601	0.140	0.034	7.74	9.47	50.3	10.5	488	551	29.1	0.014	0.001
	P-W07-22	400	0.077	0.031	7.81	9.46	50.9	10.1	469	553	29.8	0.017	0.002
	P-W07-23	200	0.221	0.028	7.96	9.82	51.9	10.4	482	555	30.3	0.013	0.002
	P-W07-24	100	0.200	0.054	8.11	9.53	51.7	10.3	487	547	30.7	0.011	0.002
P-W02 (3^°43.584S, 151^°40.284E; depth: 1690 m)
	P-W02-1	1641	0.103	0.294	7.63	9.72	52.2	11.0	501	534	28.9	0.054	0.335
	P-W02-4	1626	0.107	0.329	7.63	9.63	51.9	10.8	487	538	28.6	0.064	0.360
	P-W02-5	1600	0.121	0.361	7.61	9.53	51.6	10.4	453	548	29.5	0.032	0.384
	P-W02-6	1575	0.128	0.352	7.63	9.37	51.2	11.0	487	538	29.9	0.050	0.386
	P-W02-7	1551	0.100	0.475	7.63	9.51	52.4	10.9	474	527	29.5	0.058	0.533
	P-W02-8	1525	0.088	0.103	7.67	9.43	52.4	10.7	480	531	28.8	0.023	0.014
	P-W02-9	1500	0.120	0.096	7.62	9.58	52.1	10.5	474	540	28.8	0.030	0.013
	P-W02-10	1475	0.094	0.077	7.67	9.38	51.1	10.6	468	538	29.2	0.032	0.012
	P-W02-11	1451	0.097	0.072	7.67	9.44	52.4	10.8	475	549	30.2	0.034	0.010
	P-W02-12	1426	0.115	0.063	7.67	9.43	50.9	10.6	478	548	28.8	0.027	0.009
	P-W02-13	1401	0.077	0.062	7.64	9.49	51.3	10.7	477	555	29.9	0.028	0.009
	P-W02-14	1351	0.107	0.052	7.67	9.43	51.7	10.6	474	557	29.1	0.026	0.008
	P-W02-15	1301	0.120	0.043	7.67	9.61	52.5	10.6	476	544	29.3	0.034	0.007
	P-W02-16	1201	0.163	0.035	7.65	9.49	51.8	10.5	472	544	29.5	0.017	0.007
	P-W02-17	999	0.087	0.04	7.68	9.61	52.6	10.8	479	549	29.2	0.021	0.004
	P-W02-20	800	0.120	0.028	7.71	9.44	52.5	10.6	473	552	29.3	0.020	0.002
	P-W02-21	600	0.285	0.027	7.74	9.84	51.4	10.2	465	541	29.6	0.026	0.003
	P-W02-22	400	0.038	0.027	7.81	9.57	51.6	10.4	471	539	29.9	0.019	0.003
	P-W02-23	200	0.128	0.025	7.98	9.53	52.2	10.7	490	546	29.9	0.018	0.004
	P-W02-24	101	0.219	0.031	8.13	9.61	52.4	10.8	492	560	29.9	0.017	0.002
P-W01 (3^°43.641S, 151^°40.314E; depth: 1695 m)
	P-W01-1	1625	0.119	0.254	7.53	9.63	51.0	10.6	476	546	30.1	0.067	0.251
	P-W01-2	1601	0.082	0.172	7.60	9.63	52.3	10.2	468	543	29.5	0.040	0.089
	P-W01-3	1575	0.060	0.096	7.62	9.71	51.1	11.0	492	534	29.8	0.038	0.012
	P-W01-4	1551	0.086	0.095	7.60	9.41	51.2	10.9	485	539	29.4	0.027	0.012
	P-W01-5	1525	0.102	0.086	7.62	9.37	49.7	10.9	490	543	29.3	0.026	0.011
	P-W01-6	1500	0.124	0.089	7.64	9.33	49.9	10.5	472	551	29.0	0.027	0.013
	P-W01-7	1476	0.132	0.096	7.61	9.30	49.6	10.9	485	539	29.8	0.023	0.013
	P-W01-8	1451	0.105	0.083	7.59	9.25	49.9	10.1	478	548	28.4	0.030	0.013
	P-W01-9	1426	0.094	0.106	7.67	9.12	50.4	10.5	479	550	29.7	0.036	0.013
	P-W01-10	1401	0.107	0.058	7.63	9.59	52.9	11.2	506	557	30.0	0.028	0.012
	P-W01-11	1376	0.089	0.079	7.64	9.52	51.0	10.5	465	539	30.0	0.027	0.009
	P-W01-12	1351	0.048	0.054	7.66	9.29	51.4	9.9	474	557	29.3	0.026	0.008
	P-W01-13	1326	0.060	0.048	7.68	9.34	51.8	10.5	493	553	28.9	0.105	0.009
	P-W01-14	1301	0.092	0.046	7.65	9.34	51.1	10.2	450	553	28.9	0.037	0.009
	P-W01-15	1276	0.114	0.044	7.65	9.33	52.0	10.2	472	554	29.3	0.029	0.008
	P-W01-16	1251	0.095	0.04	7.65	9.49	52.0	10.5	475	556	29.9	0.029	0.008
	P-W01-17	1226	0.139	0.039	7.62	9.29	50.4	10.6	481	553	29.5	0.033	0.008
	P-W01-18	1201	0.166	0.041	7.67	9.49	51.5	10.1	439	556	30.0	0.024	0.005
	P-W01-19	1000	0.057	0.032	7.65	9.41	51.0	10.8	472	558	29.4	0.030	0.005
	P-W01-20	800	0.122	0.033	7.68	9.45	51.6	10.6	477	554	29.5	0.026	0.069
	P-W01-21	600	0.106	0.028	7.73	9.43	50.3	11.0	478	549	28.3	0.039	0.015
	P-W01-22	400	0.130	0.031	7.82	9.28	51.6	11.1	491	553	29.7	0.026	0.003
	P-W01-23	201	0.166	0.032	7.99	9.74	53.1	11.4	506	545	30.1	0.045	0.003
	P-W01-24	100	0.104	0.034	7.99	9.53	52.0	10.9	481	544	30.6	0.035	0.004
P-W04 (3^°43.6776S, 151^°40.344E; depth: 1749 m)
	P-W04-1	1665	0.071	0.13	7.49	9.30	51.0	10.5	467	547	30.0	0.034	0.170
	P-W04-4	1650	0.026	0.165	7.61	9.33	50.2	10.8	481	542	30.0	0.025	0.184
	P-W04-5	1625	0.041	0.22	7.62	9.22	50.4	10.9	492	548	29.5	0.025	0.258
	P-W04-6	1600	0.031	0.346	7.60	9.21	50.0	10.6	478	545	29.4	0.039	0.348
	P-W04-7	1576	0.026	0.403	7.60	9.12	49.5	10.6	468	538	29.5	0.063	0.486
	P-W04-8	1550	0.010	0.367	7.58	9.18	50.8	11.0	479	551	29.5	0.043	0.433
	P-W04-9	1526	0.009	0.484	7.55	9.23	51.3	10.5	472	538	29.7	0.133	0.539
	P-W04-10	1500	0.045	0.451	7.58	9.18	50.4	10.5	470	528	29.9	0.029	0.466
	P-W04-11	1475	0.048	0.094	7.61	9.37	49.8	10.8	483	552	30.1	0.045	0.059
	P-W04-12	1450	0.091	0.083	7.63	9.26	49.7	10.7	479	545	29.6	0.057	0.017
	P-W04-13	1426	0.091	0.067	7.65	9.59	52.1	10.8	482	544	30.1	0.016	0.010
	P-W04-14	1401	0.096	0.059	7.66	9.59	51.0	10.8	471	555	29.5	0.069	0.021
	P-W04-15	1301	0.050	0.066	7.66	9.36	50.2	10.5	465	547	30.3	0.012	0.006
	P-W04-16	1201	0.072	0.036	7.63	9.45	49.5	10.7	432	537	29.7	0.024	0.006
	P-W04-17	999	0.118	0.032	7.64	9.32	49.8	10.2	474	539	29.7	0.018	0.002
	P-W04-20	801	0.077	0.027	7.70	9.42	51.1	10.6	485	538	29.3	0.015	0.002
	P-W04-21	601	0.157	0.043	7.75	9.49	50.2	10.4	502	527	29.5	0.010	0.001
	P-W04-22	401	0.057	0.031	7.78	9.45	50.9	10.4	499	531	30.2	0.011	0.001
	P-W04-23	201	0.246	0.028	7.95	9.66	52.1	10.9	545	548	29.5	0.013	0.001
	P-W04-24	100	0.243	0.038	8.13	9.66	52.2	11.3	533	551	30.0	0.010	0.002
Satanic Mills^a		1695			2.59	11.2	12.5	52.4	401	503	4	1663	1869
Fenway^a		1715			2.90	19.8	9.46	65.8	420	576	4.3	9761	3142
Bottom seawater^c					7.80^b	10.5	52.4	9.90	471	540	28.2	0.001	0.005

^aSatanic Mills and Fenway average vent fluid data from Reeves et al. [29]. ^bAverage pH value from Douville et al. [45]. ^cBottom seawater data from Seewald et al. [31].