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Flux and genesis of CO2 degassing from volcanic-geothermal fields of Gulu-Yadong rift in the Lhasa terrane, South Tibet: Constraints on characteristics of deep carbon cycle in the India-Asia continent subduction zone

文献类型：期刊论文

作者Zhang, Lihong1; Guo, Zhengfu1; Sano, Yuji2; Zhang, Maoliang1; Sun, Yutao1; Cheng, Zhihui1; Yang, Tsanyao Frank3
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2017-11-01
卷号149页码:110-123
关键词Co2 Degassing He-c Coupling Model India-asia Continent Subduction Zone Gulu-yadong Rift South Tibet
ISSN号1367-9120
DOI10.1016/j.jseaes.2017.05.036
文献子类Article
英文摘要Gulu-Yadong rift (GYR) is the longest extensional, NE-SW-trending rift in the Himalayas and Lhasa terrane of South Tibet. Many volcanic-geothermal fields (VGEs), which comprise intense hot springs, steaming fissures, geysers and soil micro-seepage, are distributed in the GYR, making it ideal area for studying deep carbon emissions in the India-Asia continent subduction zone. As for the northern segment of GYR in the Lhasa terrane, its total flux and genesis of CO2 emissions are poorly understood. Following accumulation chamber method, soil CO2 flux survey has been carried out in VGFs (i.e., Jidaguo, Ningzhong, Sanglai, Tuoma and Yuzhai from south to north) of the northern segment of GYR. Total soil CO2 output of the northern GYR is about 1.50 x 107 t a(-1), which is attributed to biogenic and volcanic-geothermal source. Geochemical characteristics of the volcanic geothermal gases (including CO2 and He) of the northern GYR indicate their significant mantle-derived affinities. Combined with previous petrogeochemical and geophysical data, our He-C isotope modeling calculation results show that (1) excess mantle-derived He-3 reflects degassing of volatiles related with partial melts from enriched mantle wedge induced by northward subduction of the Indian lithosphere, and (2) the crust-mantle interaction can provide continuous heat and materials for the overlying volcanic-geothermal system, in which magma derived volatiles are inferred to experience significant crustal contamination during their migration to the surface.
WOS关键词GEOCHEMICAL CONSTRAINTS ; BENEATH SOUTHERN ; MIDOCEAN RIDGE ; HELIUM ISOTOPE ; METAMORPHIC PATHWAY ; GAS GEOCHEMISTRY ; MAFIC MAGMATISM ; NOBLE-GASES ; MANTLE ; EMISSIONS
WOS研究方向Geology
语种英语
WOS记录号WOS:000414883300012
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Chinese Academy of Sciences(XDB03010600) ; National Natural Science Foundation of China (NSFC)(41572321 ; 41602341) ; Chinese Academy of Sciences(XDB03010600) ; National Natural Science Foundation of China (NSFC)(41572321 ; 41602341) ; Chinese Academy of Sciences(XDB03010600) ; National Natural Science Foundation of China (NSFC)(41572321 ; 41602341) ; Chinese Academy of Sciences(XDB03010600) ; National Natural Science Foundation of China (NSFC)(41572321 ; 41602341)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62430]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Guo, Zhengfu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Univ Tokyo, Atmosphere & Ocean Res Inst, Chiba 2778564, Japan
3.Natl Taiwan Univ, Dept Geosci, Taipei 10699, Taiwan
推荐引用方式
GB/T 7714		 Zhang, Lihong,Guo, Zhengfu,Sano, Yuji,et al. Flux and genesis of CO2 degassing from volcanic-geothermal fields of Gulu-Yadong rift in the Lhasa terrane, South Tibet: Constraints on characteristics of deep carbon cycle in the India-Asia continent subduction zone[J]. JOURNAL OF ASIAN EARTH SCIENCES,2017,149:110-123.
APA Zhang, Lihong.,Guo, Zhengfu.,Sano, Yuji.,Zhang, Maoliang.,Sun, Yutao.,...&Yang, Tsanyao Frank.(2017).Flux and genesis of CO2 degassing from volcanic-geothermal fields of Gulu-Yadong rift in the Lhasa terrane, South Tibet: Constraints on characteristics of deep carbon cycle in the India-Asia continent subduction zone.JOURNAL OF ASIAN EARTH SCIENCES,149,110-123.
MLA Zhang, Lihong,et al."Flux and genesis of CO2 degassing from volcanic-geothermal fields of Gulu-Yadong rift in the Lhasa terrane, South Tibet: Constraints on characteristics of deep carbon cycle in the India-Asia continent subduction zone".JOURNAL OF ASIAN EARTH SCIENCES 149(2017):110-123.

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来源：地质与地球物理研究所

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