Hydrogeochemical Characteristics and Genesis of the Chazi Geothermal Field Area in Tibet

Table 1

Major constituents of the water samples in the study area.

Field number	Geothermal display area	Sample type	Water temperature/°C	pH	ρB/(mg/L)									Hydrochemical type
					Na^+	K^+	Ca^2+	Mg^2+	HCO3^-	CO3^2-	Cl^-	SO4^2-	TDS
DR28	Lagejia spring	Hot spring	85	8.3	386.2	35.1	2.9	0.0	449.2	106.9	158	89.9	1732	HCO3-Na
DR32	Semi spring	Hot spring	89	8.7	790.5	125.5	0.7	0.0	0	571.3	722.8	10.1	4350	Cl·CO3-Na
DR36	Charongqurene spring	Hot spring	65	7.1	564.7	58.2	53.3	6.7	807.5	0	262.9	436	2333.7	HCO3·SO4- Na
DR37	Dengle spring	Hot spring	43	6.6	837.2	72.3	66.8	14.6	1201.1	0	919.3	37.5	3442.1	Cl·HCO3-Na
DR40	Pola spring	Hot spring	30	6.6	107.1	5.1	8.5	0.2	99.8	0	90.5	43.6	421.4	Cl ·HCO3-Na
DR42	Qugu spring	Hot spring	47	8.9	117.9	2.4	0.7	<0.1	268.9	20.9	4.2	12.2	469.2	HCO3-Na
DR44	Seluo spring	Hot spring	44	6.7	195.0	40.2	195.8	37.7	1105.2	0	226.6	2.9	1893.1	HCO3·cl-ca·Na
DR45	Cha spring	Hot spring	48	7.1	476.4	26.6	70.9	9.2	1246.5	0	200.5	28.3	2242.3	HCO3-Na
DR47	Qugulongbu	Hot spring	66	6.9	454.7	25.3	50.3	7.6	616.9	0	280.6	250.8	1903.5	HCO3·cl-Na
DR48	Shalei spring	Hot spring	75	7.7	115.4	10.4	28.8	7	378.5	0	7.2	59.2	710.3	HCO3-Na
XZDR9	Tamaquzhen	Hot spring	63	7.2	407.4	31.6	40	12.6	856.3	0	190.5	78.2	1919	HCO3-Na
XZDR11	Yinjianquzhen	Hot spring	39	6.5	59.4	5.4	210	20.9	811.9	0	8.9	34.8	1113	HCO3-Ca
XZDR15	Gabudanni	Hot spring	67	7.0	451.4	29.7	19.2	<0.1	584.4	0	259.4	169.9	1922	HCO3·Cl-Na
CKLSQ1	Chazi Village	Hot spring	87	7.8	481.9	39.1	12.8	<0.1	654.9	87.1	165.1	121.9	1806.9	HCO3-Na
CKLSQ2	Chazi Village	Hot spring	74	7.9	476.9	41.1	9.5	<0.1	707.3	58.1	167.8	117.5	1844.1	HCO3-Na
CQSH	Chazi Village	Chaqu River water	7.5	7.5	13.1	1.4	40.9	6.6	115.9	0	1.41	47.3	279	HCO3·SO4-Ca
CQXH	Chazi Village	Chaqu River water	25.5	8.6	363.7	30.1	19.2	1.82	424.1	108.2	118.1	106.1	1386.1	HCO3-Na
DLZBXH	Chazi Village	Dalong Zangbo River water	6.5	8.3	8.1	2.5	44.5	4.9	78.4	1.1	3.1	75.3	233.2	SO4·HCO3-Ca
J05	Chazi Village	Well water	4	7.5	5.7	2.3	25	2.1	78.7	0	2.7	16.6	115.6	HCO3-Ca
DR28-1	Lagejia spring	Hot spring	85.5	9.1	365	41	7.2	1.9	261	234	165	132	1570	CO3·Cl -HCO3
DR28-2	Lagejia spring	Hot spring	78	8.4	388.9	35	0.6	0.2	590.6	36	112.1	102	1712	HCO3-Na
DR28-3	Lagejia spring	Hot spring	85	8.7	350	39	0	0	447.2	100.8	151.7	77.8	1600	HCO3-Na
DR32-1	Semi spring	Hot spring	86	8.7	700	104	3.4	4.2	490	306	674	65.8	4340	Cl·CO3·HCO3-Na
DR42-1	Qugu spring	Hot spring	45	8.9	118	2.5	3.4	1.3	227	45.7	13.9	28.8	227	HCO3·CO3·SO4·Cl-Na
DR44-1	Seluo spring	Hot spring	40	7.3	175	33.3	202	22.9	1040	—	157	74	1380	HCO3·Cl-Ca·Na
DR45-1	Cha spring	Hot spring	44.5	7.3	443	26.5	73.8	12.5	1130	—	172	32.9	1560	HCO3·Cl-Na·Ca
DR47-1	Qugulongbu	Hot spring	65.2	7	442.5	26.5	53.2	9.4	493	—	272	280	1600	HCO3·Cl-Na·Ca
DR48-1	Shalei spring	Hot spring	76	7.5	125	12.5	34.3	8.3	38.1	—	9.6	26.8	510	HCO3-Na·Ca
CKLSQ-1	Chazi Village	Hot spring	87	7.9	468	45	12	4.2	801	—	163	144	1560	HCO3·Cl·SO4-Na

Note: DR28-1, DR28-2, DR28-3, DR32-1, DR42-1, DR44-1, DR45-1, DR47-1, DR48-1, and CKLSQ-1 are quoted from the report of Wei et al. [29].