Geofluids

Research Article

Research on the Hydrochemistry and Fault Control Mechanism of Geothermal Water in Northwestern Zhangzhou Basin

Table 2

Chemical analysis result of water sample of the NZB (in mg/L, except for pH in standard pH units and T in °C).


Group	Sample ID	Sample type		pH	K	Na	Ca	Mg	Cl	SO₄	HCO₃	CO₃	Li	F	SiO₂	Sr

G1-1	CS-1	Cold spring	21.8	6.75	1.82	3.88	2.33	0.18	1.75	1.83	27.51	0	<0.005	0.17	19.21	0.007
	CS-2	Cold spring	23.7	6	0.29	0.78	0.61	0.22	1.75	3.1	9.17	0	<0.005	0.11	7.25	0.004
	CS-3	Cold spring	23.2	5.89	1.65	1.86	1.1	0.28	2.8	2.57	9.17	0	<0.005	0.14	13.96	0.008
	CW-1	Cold well	26.9	5.94	1.51	1.76	3.2	0.71	1.75	1.86	17.12	0	<0.005	0.13	14.16	0.021
	CW-2	Cold well	23.3	6.72	2.27	9.65	13.81	1.63	2.45	1.06	67.25	0	<0.005	0.25	52.17	0.114
	CW-3	Cold well	23	6.34	2.34	2.98	2.97	0.22	1.75	1.16	24.46	0	<0.005	0.18	23.15	0.004
	CW-4	Cold well	20.8	6.65	2.33	4.32	9.31	1.21	1.75	3.59	42.8	0	<0.005	0.2	19.63	0.063
	CW-5	Cold well	25.1	6.93	3.08	27.97	18.37	0.94	8.75	10.98	100.9	0	0.035	2.4	48.11	0.081
	CW-6	Cold well	23.3	6.33	2.94	6.37	7.8	1.4	3.5	2.05	24.46	0	<0.005	0.17	28.35	0.095
	CW-7	Cold well	24	5.86	5.21	2.94	5.98	0.58	9.1	0.9	6.11	0	<0.005	<0.10	6.08	0.038
	CW-8	Cold well	27.2	6.54	2.3	9	11.46	1.46	1.75	4.82	55.03	0	<0.005	0.22	50.41	0.077
	CW-9	Cold well	22.8	6.68	2.77	12.89	16.54	2.36	11.9	1.24	91.71	0	<0.005	0.32	46.23	0.231
	CW-10	Cold well	24.8	7.31	6.29	2.02	19.13	0.34	1.75	8.73	67.25	0	<0.005	0.2	15.19	0.495
	CW-12	Cold well	22.6	5.92	1	2.13	0.91	0.39	4.9	1.4	12.23	0	<0.005	0.13	14.82	0.012
	CW-14	Cold well	23.5	5.73	6.48	3.4	11.8	2.17	12.95	14.09	12.23	0	<0.005	0.25	12.22	0.058
	CW-16	Cold well	23.6	5.37	6.64	18.04	10.29	0.72	19.26	0.96	6.11	0	<0.005	0.18	7.55	0.048
	CW-17	Cold well	24.2	6.12	3.85	8.95	12.6	2.67	15.76	4.38	48.91	0	<0.005	0.15	20.54	0.104

G2	CW-11	Cold well	24.7	6.47	26.37	13	16.8	5.11	15.76	32.76	42.8	0	<0.005	0.14	11.75	0.086
	CW-13	Cold well	25.1	6.18	21.27	20.01	12.63	2.53	33.26	12.71	33.63	0	<0.005	0.22	20.59	0.148
	CW-15	Cold well	23.2	6.58	15.74	8.14	23.9	3.79	12.25	26.13	48.91	0	<0.005	0.2	16.07	0.165

G1-2	TS-1	Thermal spring	53	8.82	1.35	70.69	2.84	0.04	7	36.42	70.31	21.05	0.06	11.68	67.26	0.088
	TS-2	Thermal spring	45.5	8.9	1.11	68.62	2.97	0.05	7	35.9	48.91	30.07	0.06	11.12	68.82	0.081
	TS-3	Thermal spring	45	8.79	1.64	81.8	6.14	<0.013	12.25	55.61	94.77	12.03	0.07	10.1	60.59	0.14
	TS-4	Thermal spring	50.1	7.7	3.6	116.4	10.85	0.22	14.71	53.89	229.3	0	0.17	13.58	81.92	0.227
	TS-5	Thermal spring	60.2	8.57	2.55	109.2	11.17	0.19	15.06	106.2	116.2	12.03	0.02	11.24	69.23	0.259
	TW-1	Thermal well	42.1	8.85	1.26	69.98	2.87	0.03	8.75	36.44	58.08	24.05	0.06	11.47	69.18	0.079
	TW-2	Thermal well	48.4	8.8	1.31	71.71	3.46	0.05	10.5	40.85	67.25	18.04	0.05	12.32	57.81	0.096
	TW-3	Thermal well	55.8	8.4	2.51	127	12.46	0.14	22.76	135.9	137.6	6.01	0.17	11.01	65.20	0.656
	TW-4	Thermal well	50.2	8.67	2.55	98.27	6.88	0.05	9.1	83.36	116.8	9.02	0.08	13.67	76.10	0.127
	TW-5	Thermal well	50	9.17	1.38	86.36	3.48	<0.013	15.41	52.69	67.25	18.04	0.07	12.11	62.29	0.161
	TW-6	Thermal well	65	8.45	2.08	116.2	9.25	0.07	24.51	100.4	137.6	3.01	0.12	11.75	57.16	0.389
	TW-7	Thermal well	60	8.6	1.11	74.91	3.6	0.07	12.25	47.63	88.65	7.22	0.04	11.66	46.92	0.077