Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 Earthquake

The chemical components, He, Ne, and C isotropic ratios of gas samples collected thrice from 32 hot springs in western Sichuan Province, southwestern China in June and October 2008 and June 2009 were investigated in order to discuss the relationship between hot spring gas geochemistry and the Wenchu...

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Main Authors: Xiaocheng Zhou, Wanchun Wang, Zhi Chen, Li Yi, Lei Liu, Chao Xie, Yuejü Cui, Jianguo Du, Jianwu Cheng, and Liming Yang
Format: Article
Language:English
Published: Springer 2015-01-01
Series:Terrestrial, Atmospheric and Oceanic Sciences
Subjects:
Online Access: http://tao.cgu.org.tw/pdf/v264p361.pdf
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author Xiaocheng Zhou
Wanchun Wang
Zhi Chen
Li Yi
Lei Liu
Chao Xie
Yuejü Cui
Jianguo Du
Jianwu Cheng
and Liming Yang
author_facet Xiaocheng Zhou
Wanchun Wang
Zhi Chen
Li Yi
Lei Liu
Chao Xie
Yuejü Cui
Jianguo Du
Jianwu Cheng
and Liming Yang
author_sort Xiaocheng Zhou
collection DOAJ
description The chemical components, He, Ne, and C isotropic ratios of gas samples collected thrice from 32 hot springs in western Sichuan Province, southwestern China in June and October 2008 and June 2009 were investigated in order to discuss the relationship between hot spring gas geochemistry and the Wenchuan Ms 8.0 earthquake. The data showed that the 3He/4He and Δ13CCO2Δ13CCO2 values in spring gases in the Longmenshan fault (LMSF), Xianshuihe fault (XSHF), and Minjiang fault (MJF) zones increased obviously after the great earthquake. It was estimated that up to 62% of mantle helium contributed to the spring gas in the Kangding region based on the maximum 3He/4He (7.42 ×× 10-6) in June 2008. Over time the mantle derived fluid contribution to the hot springs gradually decreased, but the crustal gas components: CO2 and CH4 derived from organic matter and radiogenic He increased. The gas geochemical data suggested that more mantle fluids migrated into the crust in western Sichuan Province after the Wenchuan Ms 8.0 earthquake.
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spelling doaj.art-db5af55ab5634f9281f34a5f007770172022-12-22T01:56:38ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802015-01-0126436110.3319/TAO.2015.01.05.01(TT)1296Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 EarthquakeXiaocheng ZhouWanchun WangZhi ChenLi YiLei LiuChao XieYuejü CuiJianguo DuJianwu Chengand Liming YangThe chemical components, He, Ne, and C isotropic ratios of gas samples collected thrice from 32 hot springs in western Sichuan Province, southwestern China in June and October 2008 and June 2009 were investigated in order to discuss the relationship between hot spring gas geochemistry and the Wenchuan Ms 8.0 earthquake. The data showed that the 3He/4He and Δ13CCO2Δ13CCO2 values in spring gases in the Longmenshan fault (LMSF), Xianshuihe fault (XSHF), and Minjiang fault (MJF) zones increased obviously after the great earthquake. It was estimated that up to 62% of mantle helium contributed to the spring gas in the Kangding region based on the maximum 3He/4He (7.42 ×× 10-6) in June 2008. Over time the mantle derived fluid contribution to the hot springs gradually decreased, but the crustal gas components: CO2 and CH4 derived from organic matter and radiogenic He increased. The gas geochemical data suggested that more mantle fluids migrated into the crust in western Sichuan Province after the Wenchuan Ms 8.0 earthquake. http://tao.cgu.org.tw/pdf/v264p361.pdf geophysicsgeologyatmospheric sciencespace scienceoceanic sciencehydrology
spellingShingle Xiaocheng Zhou
Wanchun Wang
Zhi Chen
Li Yi
Lei Liu
Chao Xie
Yuejü Cui
Jianguo Du
Jianwu Cheng
and Liming Yang
Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 Earthquake
Terrestrial, Atmospheric and Oceanic Sciences
geophysics
geology
atmospheric science
space science
oceanic science
hydrology
title Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 Earthquake
title_full Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 Earthquake
title_fullStr Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 Earthquake
title_full_unstemmed Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 Earthquake
title_short Hot Spring Gas Geochemistry in Western Sichuan Province, China After the Wenchuan Ms 8.0 Earthquake
title_sort hot spring gas geochemistry in western sichuan province china after the wenchuan ms 8 0 earthquake
topic geophysics
geology
atmospheric science
space science
oceanic science
hydrology
url http://tao.cgu.org.tw/pdf/v264p361.pdf
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