Hydrochemical Characteristics and Evolution of Geothermal Fluids in the Chabu High-Temperature Geothermal System, Southern Tibet

Table 3

Calculation results of geothermal reservoir temperatures in the research area ( in °C, except for mass flow rate in L/min). The results in bold font are the optimum temperatures selected from the quartz geothermometers taking into account the measured emerging temperatures and the mass flow rates of the spring samples.

Group	Sample; ID	Emerging; temperature	Mass flow rate	Quartz (maximum; steam loss)	Quartz (no; loss of steam)	Na-K-Ca	Na/K	K/Mg
1	C31	87.3	1842.6	193.83	211.80	235.20	240.51	126.90
	C34	87.2	1311.6	152.31	160.68	235.52	236.34	115.83
	C35	78.6	70.32	142.98	149.45	235.08	236.62	121.90
	C6	81.4	172.8	190.67	207.84	230.93	235.71	131.88
	C32	87	98.16	189.34	206.19	238.57	235.32	121.02
	C3	80.8	21.6	146.32	153.46	229.30	233.48	127.54
	C33	87.3	17.34	147.35	154.70	231.68	231.45	116.93
	C5	81.8	151.2	189.79	206.74	225.24	228.35	118.11
	C19	78.7	324	194.34	212.45	244.19	248.12	147.29
	C20	83.2	496.8	196.27	214.87	250.26	255.90	143.63
	C18	79.2	64.8	200.74	220.49	249.05	253.13	150.87
2-1	C1	70.4	-	153.95	162.66	211.32	216.33	127.67
	C26	76	-	191.10	208.39	210.78	217.46	122.57
	C23	81.6	-	193.04	210.81	211.57	214.96	122.73
	C36	77.6	432	185.61	201.54	211.98	216.20	130.49
	C11	80.6	216	188.66	205.34	214.87	220.28	131.90
	C25	77.2	-	188.87	205.59	219.03	232.32	132.47
	C4	72.2	0.216	160.59	170.73	227.19	230.56	123.75
	C21	77.4	-	186.62	202.78	213.01	224.59	140.15
	C7	80	-	183.54	198.95	219.72	229.37	135.64
2-2	C24	66	6.48	190.99	208.25	201.80	222.87	120.04
	C28	71	21.6	178.32	192.49	202.59	226.49	126.36
	C22	78.8	43.2	191.42	208.78	205.34	230.03	134.41
	C30	57.6	2.16	192.40	210.01	203.34	225.37	140.61
	C27	70	-	203.80	224.36	206.39	223.42	126.09
	C29	62.6	43.2	200.55	220.25	192.97	212.35	118.47
	C2	77.6	86.4	197.62	216.56	202.48	217.58	131.09
3	C14	70	2.16	175.32	188.79	197.54	221.06	96.58
	C16	66.2	21.6	179.47	193.91	198.74	214.06	104.61
	C15	62	2.16	187.00	203.27	198.03	224.27	108.92
	C8	67.8	2.16	183.62	199.06	195.72	216.99	99.59
	C12	68.8	21.6	175.02	188.41	204.12	220.91	104.22
	C9	58.8	21.6	193.37	211.23	199.40	221.49	105.18
	C17	61.4	21.6	194.35	212.45	207.46	226.81	110.94
	C13	74.6	32.4	195.54	213.95	193.66	213.81	103.10
	C10	73	-	197.03	215.82	198.43	218.39	106.32