Preliminary Gas and Isotope Geochemistry in the Rehai Geothermal Field, P.R. China
Based on gas and sulphur isotopic composition, two types of steam in Rehai geothermal field are identified. One is with higher CO{sub 2} and H{sub 2}S concentration, the {delta}{sup 34}S of H{sub 2}S is in the range 2.49{per_thousand} to -1.04{per_thousand} (vs CDT), from which the H{sub 2}S-temperature is over than 250 C. The other is with lower CO{sub 2} and H{sub 2}S concentration, the {delta}{sup 34}S of H{sub 2}S is in the range -4.0{per_thousand} to -8.36{per_thousand}, from which the H{sub 2}S- and H{sub 2}-temperatures are 180 C-210 C, in good agreement with quartz temperature. The thermal water in the Rehai field is of local meteoric origin. Maximum {delta}{sup 18}O-value shift is less than 2.0{per_thousand} (vs SMOW). Mixing is widespread and could be identified on isotope and solute chemistry.
- Research Organization:
- Institute of Geology, Chinese Academy of Sciences, P.R. China; Department of Geology, Beijing University, P.R. China
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 895930
- Report Number(s):
- GEO-PROC-95-02; TRN: US200703%%750
- Country of Publication:
- United States
- Language:
- English
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