Fluid Geochemistry of Fault Zone Hydrothermal System in the Yidun-Litang Area, Eastern Tibetan Plateau Geothermal Belt

Table 1

Concentrations of major and trace chemical constituents in hot spring sample in the Yidun-Litang area (mg/L).

Sample name	Alt (m)	T (°C)	pH	Li	Na	K	Ca	Mg	SiO2	B	Cl	F	SO4	HCO3	CO3	Rb	Cs	Cond us/cm	δ^18O	δD	Tritium (TU)	CBE
1	3580	83.2	9.4	3.16	357.00	28.00	1.35	0.04	448.00	1.39	47.68	19.97	19.94	498.90	118.20	0.59	1.09	1440	−19.26	−152.96	<1.0	1.2%
2	3587	88.2	9.9	2.45	359.00	29.30	0.60	0.03	520.00	1.17	50.85	21.38	22.64	176.47	271.00	0.76	1.09	1430	−18.83	−152.09	—	0.78%
3	3562	88.0	9.2	2.84	368.80	30.10	0.52	0.07	460.00	1.37	53.19	22.25	24.64	560.80	114.60	0.78	1.22	1530	−18.44	−151.99	—	−1.58%
4	3561	89.0	9.7	3.48	380.50	30.55	0.30	0.03	528.00	1.46	53.28	21.93	22.56	367.80	218.50	0.69	1.32	1530	−18.75	−151.95	<1.0	−0.61%
5	3544	87.1	9.0	2.13	303.10	23.37	4.10	0.30	304.00	1.16	46.68	18.34	74.49	491.60	45.56	0.58	0.85	1240	−18.24	−148.91	—	−1.95%
6	3568	84.8	8.9	1.49	225.00	17.60	11.50	0.53	168.00	0.70	24.66	7.74	206.90	254.20	7.53	0.33	0.28	1030	−17.47	−150.84	—	1.64%
7	3564	88.2	9.5	1.09	127.80	14.64	66.31	0.49	100.00	0.24	9.30	3.42	208.40	183.75	—	0.30	0.50	1440	−17.25	−151.46	<1.0	7.66%
8	3566	87.8	8.4	3.45	370.50	31.40	1.28	0.03	440.00	1.48	51.59	20.15	31.54	411.50	164.80	0.70	1.09	820	−18.57	−151.94	<1.0	1.26%
9	3555	85.7	9.6	2.68	400.10	33.98	0.97	0.06	412.00	1.29	56.99	23.75	31.03	513.40	164.80	0.88	1.28	1560	−19.17	−152.65	—	−1.13%
10	3591	50.1	8.3	0.18	119.80	3.32	9.25	0.65	54.00	0.16	8.79	13.72	15.43	225.80	7.16	0.04	0.08	490	−20.74	−154.53	2.4	8.02%
11	3304	64.4	7.7	0.45	294.20	19.95	26.63	17.83	116.00	0.03	14.36	3.14	98.99	876.10	—	0.12	0.30	1580	−19.17	−151.22	—	−4.18%
12	3958	70.0	8.3	1.19	279.30	22.01	27.28	1.84	105.00	0.63	16.18	8.90	6.11	738.40	—	0.39	0.46	1180	−19.40	−155.35	<1.0	3.1%
13	3941	65.4	7.1	1.13	278.30	21.44	4.09	1.65	106.00	0.01	16.80	9.01	5.10	692.50	—	0.35	0.43	1200	−20.16	−155.85	<1.0	1.34%
14	3918	65.4	8.0	0.81	277.90	21.37	27.87	1.81	74.00	0.07	16.93	9.18	5.04	710.10	—	0.38	0.43	1160	−20.11	−155.16	—	4.33%
15	3946	34.6	6.9	1.96	726.10	33.17	7.39	18.59	68.00	3.13	30.36	3.96	8.96	1766.10	125.40	0.16	0.61	3400	−18.80	−158.36	—	−1.63%
16	3948	25.6	7.3	2.17	758.30	35.17	12.47	19.26	49.38	3.51	31.88	3.49	6.76	2070.00	—	0.08	0.66	3010	−18.86	−159.61	<1.0	−0.33%
17	3989	42.8	7.3	1.69	608.90	29.27	12.13	16.98	70.00	2.82	24.92	3.11	6.66	1713.90	—	0.11	0.53	3040	−18.15	−155.53	—	−1.27%
18	3965	46.9	6.8	2.04	746.40	35.40	42.30	18.44	55.77	3.34	31.37	3.08	16.82	1944.00	86.60	0.08	0.62	3110	−19.23	−161.33	—	−0.45%
19	3970	47.0	6.7	2.11	723.70	33.47	16.07	19.04	51.69	3.44	30.70	3.50	7.40	2123.30	—	0.07	0.62	3070	−18.89	−161.39	—	−3.35%
20	3965	50.7	7.0	2.20	729.00	34.09	11.75	18.64	59.62	3.71	33.61	3.45	7.39	2092.70	—	0.08	0.61	3040	−18.74	−161.99	—	−2.98%
21	4124	78.3	8.1	6.63	514.90	59.76	7.28	10.89	84.00	6.61	74.00	4.90	10.86	1154.30	93.12	0.71	1.68	2420	−18.25	−157.20	<1.0	−3.88%
22	4130	81.3	8.6	6.70	491.00	57.45	15.60	11.20	84.00	6.50	71.08	4.73	13.26	1415.50		0.71	1.66	2270	−17.64	−156.62	<1.0	−6.78%
23	4133	81.3	8.4	5.31	497.90	58.65	10.75	10.74	78.00	5.59	68.55	4.59	11.64	1430.80		0.74	1.63	2270	−17.95	−156.17		−7.08%
24	3980	48.9	6.6	2.04	395.00	25.70	5.77	16.02	59.00	3.50	41.27	2.95	16.60	1041.40		0.13	1.07	1860	−18.81	−150.02		−2.48%