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  2. 地质与地球物理研究所
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  4. 岩石圈演化国家重点实验室
Mantle volatiles in spring gases in the Basin and Range Province on the west of Beijing, China: Constraints from helium and carbon isotopes

文献类型：期刊论文

作者Zhang, Weibin1,2,3; Du, Jianguo1; Zhou, Xiaocheng1; Wang, Fei2
刊名JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
出版日期2016
卷号309页码:45-52
关键词Spring Gas Helium Isotopes Carbon Isotopes Mantle Degassing Intraplate Tectonic Setting
DOI10.1016/j.jvolgeores.2015.10.024
文献子类Article
英文摘要The mantle degassing observed at the Earth surface demonstrates both a provenance of fluids in the mantle and a pathway to the surface. Quantities of this process are discovered on the plate boundaries, where there are plenty of active volcanoes and active faults, releasing plenty of mantle volatiles. However, in intraplate tectonic settings without obvious mantle plume, the work for mantle degassing observed in spring gasses seems comparatively limited. We selected the Basin and Range Province on the west of Beijing, an area in the inner part of North China Craton, to discuss the mantle degassing based on the helium and carbon isotopes of spring gasses, and the previous works on seismic tomography and fault slip rate. The spring gas helium and carbon (CO2) isotopes indicate the mixture of crustal and mantle materials. The helium ratios (reported as R-c/R-A, air-corrected He-3/He-4 ratio, RA = 1.4 x 10(-6); RA is the air ratio) vary in the range of 0.33-2.08. The calculated mantle helium contributes 4% similar to 26% of helium in spring gasses, and the remaining is generated in the crust by radiogenic decay of U-Th series with tiny air mixture. CO2 acquires analytical delta C-13(v-pDB) values in the range from -203 parts per thousand to -10.2 parts per thousand, affected by carbonate precipitation. The unaffected values are calculated to be -8.5 similar to 5.1 parts per thousand by temperature-dependent isotope fractionation, indicating the mixture of mantle and crustal (limestone) materials. The mantle volatiles are possibly generated in the upwelling asthenosphere, in that, the He-3/He-4 ratio corresponds well with the negative anomaly of P-wave velocity at the depth of 70 km imaged by seismic tomography. The He-3/He-4 ratio also correlates with time-averaged fault slip rate, suggesting higher slip rate renders more permeable mantle vent. These consequences help to construct a conceptual model for intraplate mantle degassing, that the mantle volatiles generate in the upwelling asthenosphere and uprise through faults and fractures whose permeabilities are controlled by slip rates. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词SAN-ANDREAS FAULT ; SOUTHWESTERN CHINA ; NOBLE-GASES ; GEOGRAPHICAL-DISTRIBUTION ; GEOTHERMAL FLUIDS ; STRUCTURE BENEATH ; GRAIN-BOUNDARIES ; EARTHS MANTLE ; CRATON ; CRUSTAL
WOS研究方向Geology
语种英语
WOS记录号WOS:000370768800004
资助机构Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration(2013IES0205 ; Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration(2013IES0205 ; Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration(2013IES0205 ; Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration(2013IES0205 ; China Natural Science Foundation(41303076 ; China Natural Science Foundation(41303076 ; China Natural Science Foundation(41303076 ; China Natural Science Foundation(41303076 ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDB03020203) ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDB03020203) ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDB03020203) ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDB03020203) ; 2010IES010102) ; 2010IES010102) ; 2010IES010102) ; 2010IES010102) ; 41025010 ; 41025010 ; 41025010 ; 41025010 ; 41221002) ; 41221002) ; 41221002) ; 41221002) ; Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration(2013IES0205 ; Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration(2013IES0205 ; Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration(2013IES0205 ; Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration(2013IES0205 ; China Natural Science Foundation(41303076 ; China Natural Science Foundation(41303076 ; China Natural Science Foundation(41303076 ; China Natural Science Foundation(41303076 ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDB03020203) ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDB03020203) ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDB03020203) ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDB03020203) ; 2010IES010102) ; 2010IES010102) ; 2010IES010102) ; 2010IES010102) ; 41025010 ; 41025010 ; 41025010 ; 41025010 ; 41221002) ; 41221002) ; 41221002) ; 41221002)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62066]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位1.China Earthquake Adm, Inst Earthquake Sci, Key Lab Earthquake Predict, Beijing 100036, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Weibin,Du, Jianguo,Zhou, Xiaocheng,et al. Mantle volatiles in spring gases in the Basin and Range Province on the west of Beijing, China: Constraints from helium and carbon isotopes[J]. JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH,2016,309:45-52.
APA Zhang, Weibin,Du, Jianguo,Zhou, Xiaocheng,&Wang, Fei.(2016).Mantle volatiles in spring gases in the Basin and Range Province on the west of Beijing, China: Constraints from helium and carbon isotopes.JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH,309,45-52.
MLA Zhang, Weibin,et al."Mantle volatiles in spring gases in the Basin and Range Province on the west of Beijing, China: Constraints from helium and carbon isotopes".JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH 309(2016):45-52.

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来源：地质与地球物理研究所

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