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Helium, Argon and Carbon Isotopic Compositions of Spring Gases in the Hainan Island, China

文献类型：期刊论文

作者Xu Sheng1,2; Zheng Guodong1; Xu Yongchang1
刊名ACTA GEOLOGICA SINICA-ENGLISH EDITION
出版日期2012-12-01
卷号86期号:6页码:1515-1523
关键词He-Ar-C isotopes mantle-derived He hot spring gas Hainan Island
ISSN号1000-9515
DOI10.1111/1755-6724.12019
文献子类Article
英文摘要Chemical and isotopic compositions have been measured for N2-He-rich bubbling gases discharging from hot springs in the Hainan Island, Southern China. Observed 3He/4He ratios (0.11.3 RA) indicate the occurrence of a mantle component throughout the island, which has been highly diluted by a crustal radiogenic 4He component. The occurrence of mantle-derived helium is high in the northern island (12%16% of total He) and gradually decreases towards southern coast (l%3% of total He). Such a distribution pattern is most likely controlled by the Pleocene-Quaternary volcanic activities in the northern island and groundwater circulation along the deep major faults. The 40Ar/36Ar and N2/Ar ratios suggest that N2 and Ar of the hot spring gases are mostly meteoric. Although d13C values of CO2 (20 parts per thousand to -27 parts per thousand) with low concentrations are consistent with the biogenic origin, the combination of 3He/4He and d13CCO2 suggests a two end-member mixing of mantle and crustal components with CO2/3He ratios of 2x109 and 8x1011, respectively. However, the low CO2/3He ratios (122x106) can not be ascribed in terms of the simple mixing but has to be explained by the addition of radiogenic 4He and loss of CO2 by calcite precipitation in the hydrothermal system, which is most likely controlled by the degree of gas-water-rock interaction.
WOS关键词SOUTH CHINA ; SEDIMENTARY BASINS ; VOLATILE FLUXES ; VOLCANIC GASES ; HE-3 EMISSION ; HEAT-FLOW ; GEOCHEMISTRY ; TECTONICS ; DIOXIDE ; ORIGIN
WOS研究方向Geology
语种英语
WOS记录号WOS:000313494000020
出版者WILEY-BLACKWELL
资助机构China National Key Basic Research and Development Program "973"(2009CB219506) ; China National Key Basic Research and Development Program "973"(2009CB219506) ; China National Key Basic Research and Development Program "973"(2009CB219506) ; China National Key Basic Research and Development Program "973"(2009CB219506) ; China National Key Basic Research and Development Program "973"(2009CB219506) ; China National Key Basic Research and Development Program "973"(2009CB219506) ; China National Key Basic Research and Development Program "973"(2009CB219506) ; China National Key Basic Research and Development Program "973"(2009CB219506)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84634]  
专题中国科学院地质与地球物理研究所
通讯作者Xu Sheng
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China
2.Univ Glasgow, Scottish Univ Environm Res Ctr, Glasgow G75 0QF, Lanark, Scotland
推荐引用方式
GB/T 7714		 Xu Sheng,Zheng Guodong,Xu Yongchang. Helium, Argon and Carbon Isotopic Compositions of Spring Gases in the Hainan Island, China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2012,86(6):1515-1523.
APA Xu Sheng,Zheng Guodong,&Xu Yongchang.(2012).Helium, Argon and Carbon Isotopic Compositions of Spring Gases in the Hainan Island, China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,86(6),1515-1523.
MLA Xu Sheng,et al."Helium, Argon and Carbon Isotopic Compositions of Spring Gases in the Hainan Island, China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 86.6(2012):1515-1523.

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来源：地质与地球物理研究所

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