Geofluids

Research Article

Organic, Gas, and Element Geochemistry of Hydrothermal Fluids of the Newly Discovered Extensive Hydrothermal Area in the Wallis and Futuna Region (SW Pacific)

Table 3

Measured concentration of major and minor elements in hydrothermal fluids from the Kulo Lasi and Fatu Kapa vent fields. FUX-PLYY-TiDZ and FUX-PLYY-TiGZ are replicate samples taken in the same orifice, one after the other, but using 2 individual Ti syringes. max (chimney) is the maximum of the discharged fluid for the given chimney which was recorded by the probe of the submarine before sampling. max (sample) is the maximum of the fluid entering the sampler recorded during sampling by the autonomous sensor that was coupled at the nozzle of the sampler.


Sample name	Zone	Site	Description	Depth	max (sample) °C	max (chimney) °C	pH	Kg m⁻³	S	NaCl (wt%)	Cl mM	Si mM	mM	Br µM	Na mM	K mM	Mg mM	Ca mM	Li µM	Li µM	Rb µM	Sr µM	Fe µM	Mn µM	Cu µM	Zn µM	Na/Cl	Br/Cl ×10³	Na/K	/Mn

IAPSO	-	-	Standard water	-	-	-	-	-	35	3.2	546	0.0	28.2	839	468	10.2	53.2	10.3	27	27	1.3	90	<LOD	<LOD	<LOD	<LOD	0.9	1.5	46	-

FU-PL-05-TiG2	Kulo Lasi	South (out)	Reference water	1150	-	-	-	1.023	35	3.2	551	0.1	29.0	833	457	9.8	53.2	10.6	25	28	4.4	93	<LOD	<LOD	<LOD	<LOD	0.83	1.5	47	-
FU-PL-05-TiG1	Kulo Lasi	South (in)	Diffuse fluid above worms	1414	32.8	-	5.96	1.023	35	3.2	549	0.2	29.3	833	457	9.9	53.2	10.6	28	52	4.6	92	<LOD	<LOD	1.4	1.5	0.83	1.5	46	-
FU-PL-06-TiG4	Kulo Lasi	North (in)	Beehive type black smoker	1475	134.1	332	6.07	1.022	33	3.0	516	1.0	27.0	822	448	10.6	49.8	10.5	33	54	5.3	84	123	32	1.7	3.1	0.87	1.6	42	-
FU-PL-06-TiD4	Kulo Lasi	North (in)	Beehive type black smoker	1475	136	332	5.58	1.021	31	2.8	485	2.1	23.9	994	406	9.5	45.7	10.2	32	55	6.1	74	78	76	1.3	1.5	0.84	2.0	43	0.010
FU-PL-06-TiG3	Kulo Lasi	North (in)	Translucent smoker	1475	342.3	330.7	2.24	1.017	32	2.9	497	8.2	8.8	738	388	18.5	24.6	11.6	149	156	26	7.3	4796	862	14	45	0.78	1.5	21	0.007
FU-PL-06-TiD3	Kulo Lasi	North (in)	Translucent smoker	1475	337.7	330.7	2.37	1.018	33	3.0	517	8.4	10.7	770	405	16.6	28.6	10.8	115	149	24	9.4	4283	788	4.2	41	0.78	1.5	24	-
FU-PL-06-TiD1	Kulo Lasi	North (in)	Black smoker	1475	343.2	345.1	2.36	1.02	47	4.3	735	14.6	6.2	1135	612	29.5	26.5	10.9	238	249	46	3.4	9884	1416	2.5	175	0.83	1.5	21	-
FU-PL-06-TiG1	Kulo Lasi	North (in)	Black smoker	1475	343.2	345.1	3.32	1.028	44	4.0	689	10.8	12.0	1051	565	23.7	34.9	10.8	176	197	36	9.1	6845	1064	20	77	0.82	1.5	24	0.001

FU3-PL-03-TiD3	Fatu Kapa	20 masf	Reference water	1488	-	-	-	-	-	3.3	565	0.0	28.8	841	483	10.4	54.5	10.7	22	51	6	<LOD	<LOD	<LOD	<LOD	<LOD	0.85	1.5	46	-
FU3-PL-14-TiG2	Fatu Kapa	23 masf	Reference water	1572	2	-	-	-	36	3.3	557	0.0	28.7	841	477	10.4	54.2	10.8	23	nm	nm	nm	nm	nm	nm	nm	0.86	1.5	46	-
FU3-PL-04-TiD3	Fatu Kapa	Stéphanie	Translucent smoker	1554	213	279	4.65	1.03	45	4.1	704	0.7	10.9	1300	519	39.8	18.7	69.6	472	568	80	<LOD	169	166	nm	<LOD	0.74	1.8	13	-
FU3-PL-04-TiG3	Fatu Kapa	Stéphanie	Translucent smoker	1554	213	279	4.64	1.03	44	4.0	686	1.0	12.9	1240	513	36.5	22.5	62.8	420	504	71	169	nm	141	8.2	<LOD	0.75	1.8	14	0.805
FU3-PL-08-TiD1	Fatu Kapa	Stéphanie	Translucent smoker	1555	289	280	4	1.031	49	4.5	770	3.8	1.3	1574	535	54.2	0.8	98.9	705	804	121	268	655	265	6.6	<LOD	0.69	2.0	10	0.886
FU3-PL-08-TiG1	Fatu Kapa	Stéphanie	Translucent smoker	1555	289	280	3.41	1.031	49	4.5	772	4.7	0.7	1592	537	54.7	0.5	98.7	708	807	122	283	167	269	nm	<LOD	0.70	2.1	10	0.762
FU3-PL-08-TiD2	Fatu Kapa	Stéphanie	Translucent smoker	1555	291	280	3.83	1.031	48	4.4	748	4.3	0.5	1537	520	52.9	0.6	95.3	684	806	116	<LOD	148	259	nm	<LOD	0.70	2.1	10	-
FU3-PL-09-TiD2	Fatu Kapa	Stéphanie	Beehive type black smoker + bacterial mat	1650	197	236	5.19	1.026	40	3.7	629	1.7	19.8	1052	500	24.4	37.4	37.8	230	293	36	149	nm	65	nm	1.0	0.79	1.7	21	0.902
FU3-PL-09-TiG2	Fatu Kapa	Stéphanie	Beehive type black smoker + bacterial mat	1559	197	236	5.42	1.025	38	3.5	600	1.0	23.8	959	489	18.5	44.3	26.4	143	193	23	<LOD	nm	23	nm	<LOD	0.81	1.6	26	-
FU3-PL-06-TiD1	Fatu Kapa	Carla	Translucent smoker	1663	278	270	5.03	1.024	37	3.4	576	1.7	18.5	927	482	28.5	35.2	17.9	260	310	42	101	nm	nm	nm	<LOD	0.84	1.6	17	-
FU3-PL-06-TiG1	Fatu Kapa	Carla	Translucent smoker	1663	278	270	4.91	1.024	37	3.4	579	0.7	12.7	984	476	37.8	23.6	22.2	391	455	63	<LOD	18	32	nm	<LOD	0.82	1.7	13	-
FU3-PL-08-TiD3	Fatu Kapa	Carla	Translucent smoker	1664	281	281	2.78	1.024	38	3.5	594	4.5	1.1	1139	479	59.6	0.4	31.5	690	746	104	115	nm	48	nm	4.4	0.80	1.9	8	1.365
FU3-PL-08-TiG3	Fatu Kapa	Carla	Translucent smoker	1664	281	281	4.17	1.024	38	3.5	592	4.0	1.9	1120	477	57.7	2.7	30.3	655	720	96	<LOD	288	39	nm	<LOD	0.81	1.9	8	-
FU3-PL-11-TiD3	Fatu Kapa		Translucent smoker	1573	259	258	4.9	1.025	41	3.7	637	1.4	8.3	1142	509	49.8	15.5	35.0	541	612	78	<LOD	38	26	nm	<LOD	0.80	1.8	10	-
FU3-PL-11-TiG3	Fatu Kapa		Translucent smoker	1573	259	258	4.43	1.025	43	3.9	664	4.1	1.9	1268	518	63.5	2.0	44.7	733	802	110	160	nm	46	nm	2.5	0.78	1.9	8	1.848
FU3-PL-14-TiD1	Fatu Kapa		Translucent smoker	1572	271	271	3.73	1.025	43	3.9	665	4.2	1.1	1282	519	66.2	0.8	43.4	764	823	120	144	28	64	nm	3.4	0.78	1.9	8	1.078
FU3-PL-14-TiG1	Fatu Kapa		Translucent smoker	1572	271	271	3.97	1.025	42	3.9	661	4.1	0.8	1279	515	65.7	0.8	42.9	757	825	119	<LOD	nm	62	nm	<LOD	0.78	1.9	8	-
FU3-PL-14-TiD2	Fatu Kapa		Translucent smoker	1669	272	-	4.59	1.03	49	4.5	769	4.5	0.7	1506	577	69.4	1.3	65.5	757	nm	nm	nm	nm	nm	nm	nm	0.75	2.0	8	-
FU3-PL-14-TiD3	Fatu Kapa		Translucent smoker	1636	287	-	4.28	1.03	47	4.3	729	3.7	15.0	1283	557	58.8	11.1	65.0	621	nm	nm	nm	nm	nm	nm	nm	0.76	1.8	9	-
FU3-PL-14-TiG3	Fatu Kapa		Translucent smoker	1636	287	-	5.37	1.028	43	3.9	672	2.5	27.0	1103	528	42.5	25.3	54.6	415	nm	nm	nm	nm	nm	nm	nm	0.79	1.6	12	-
FU3-PL-18-TiD1	Fatu Kapa		Translucent smoker	1540	265	260	4.35	1.027	44	4.1	693	3.7	1.0	1344	533	64.9	1.2	51.1	755	nm	nm	nm	nm	nm	nm	nm	0.77	1.9	8	-
FU3-PL-17-TiD2	Fatu Kapa	Fati Ufu	Grey smoker	1522	299	303	4.26	1.031	47	4.3	739	3.3	9.3	1378	555	38.4	17.6	66.6	543	nm	nm	nm	nm	nm	nm	nm	0.75	1.9	14	-
FU3-PL-17-TiG2	Fatu Kapa	Fati Ufu	Grey smoker	1522	299	303	4.22	1.031	48	4.4	748	3.5	8.7	1402	562	39.8	15.9	69.7	569	nm	nm	nm	nm	nm	nm	nm	0.75	1.9	14	-
FU3-PL-21-TiD1	Fatu Kapa	Fati Ufu	Grey smoker	1523	302	301	3.81	1.032	50	4.6	784	4.7	1.4	1554	577	47.3	1.4	86.2	717	nm	nm	nm	nm	nm	nm	nm	0.74	2.0	12	-
FU3-PL-21-TiG1	Fatu Kapa	Fati Ufu	Grey smoker	1523	302	301	4.69	1.03	45	4.1	708	2.7	10.5	1292	544	34.7	19.3	60.3	474	nm	nm	nm	nm	nm	nm	nm	0.77	1.8	16	-
FU3-PL-21-TiD2	Fatu Kapa	Fati Ufu	White smoker	1503	-	284	3.27	1.028	44	4.1	694	4.9	0.4	1359	534	39.3	1.0	63.3	573	nm	nm	nm	nm	nm	nm	nm	0.77	2.0	14	-
FU3-PL-21-TiG2	Fatu Kapa	Fati Ufu	White smoker	1503	-	284	4.22	1.026	42	3.9	661	3.9	7.0	1217	520	32.0	13.3	50.6	435	nm	nm	nm	nm	nm	nm	nm	0.79	1.8	16	-
FU3-PL-20-TiD1	Fatu Kapa	Tutafi	Grey smoker	1580	316	317	4.1	1.029	46	4.2	720	2.6	0.6	1409	543	54.6	0.9	65.4	628	nm	nm	nm	nm	nm	nm	nm	0.75	2.0	10	-
FU3-PL-20-TiG1	Fatu Kapa	Tutafi	Grey smoker	1580	316	317	4.14	1.029	46	4.2	723	2.3	1.0	1409	543	54.7	0.7	66.4	630	nm	nm	nm	nm	nm	nm	nm	0.75	1.9	10	-
FU3-PL-21-TiD3	Fatu Kapa	Tutafi	White smoker	1626	293	294	2.92	1.028	45	4.1	701	5.1	0.9	1367	528	51.3	0.3	63.9	640	nm	nm	nm	nm	nm	nm	nm	0.75	1.9	10	-
FU3-PL-21-TiG3	Fatu Kapa	Tutafi	White smoker	1626	293	294	3.65	1.027	45	4.1	700	5.0	0.8	1371	528	51.0	0.8	63.3	633	nm	nm	nm	nm	nm	nm	nm	0.75	2.0	10	-