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Gas geochemistry and methane emission from Dushanzi mud volcanoes in the southern Junggar Basin, NW China

文献类型：期刊论文

作者Zheng, Guodong1; Ma, Xiangxian1; Guo, Zhengfu2; Hilton, David R.3; Xu, Wang1; Liang, Shouyun4; Fan, Qiaohui1; Chen, Wenxing4
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2017-11-01
卷号149页码:184-190
关键词Mud Volcanoes Greenhouse Gases Gas Origin Carbon Cycle Southern Junggar Basin
ISSN号1367-9120
DOI10.1016/j.jseaes.2017.08.023
文献子类Article
英文摘要There are many mud volcanoes in the southern margin of the Junggar Basin, northwest China, of which the Dushanzi area is the most typical and active one, emitting large amount of greenhouse gases associated with water and mud. The emitted gas is dominated by methane (average 90.1%), together with other gases, such as ethane (4.84-5.46%), propane (0.06-0.90%), CO2 (0.67-1.0%), and N-2 (2.8-3.3%). The carbon (delta C-13(1)) and hydrogen (delta D) isotopic ratios of methane are in the ranges of -40.6%o to -45.0%o and -221%o to -249%o, respectively, whereas carbon isotope ratios of ethane (delta C-13(2)) are -25.2%o to -27.6%o. Based on delta C-13 values, the released gas is characterized as a thermogenic coal-type and possibly originated from the middle-low Jurassic coal-bearing sequences according to the gas-source correlation and regional geology. Helium isotopes show a crustal source. The methane flux of Dushanzi mud volcanoes from both macro-seepage (craters/vents) and micro-seepage (ground soil exhalation) ranged over the orders of magnitude, from 0.4-2.7 kg d(-1) and 4950 mg m(-2) d(-1) on average, respectively. Positive CH4 fluxes from dry soil were widespread throughout the investigated areas. The total CH4 emission from Dushanzi mud volcanoes is estimated to be at least 22.6 tons a(-1), of which about 89% is from micro-seepage surrounding the mud volcano vents.
WOS关键词STABLE CARBON ISOTOPES ; CHEMICAL-COMPOSITION ; NATURAL GASES ; ATMOSPHERE ; ROMANIA ; TAIWAN ; FLUX ; AZERBAIJAN ; HYDROGEN ; ORIGINS
WOS研究方向Geology
语种英语
WOS记录号WOS:000414883300018
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Natural Science Foundation of China(41273112 ; Chinese Academy of Sciences(2015VEA032) ; Key Laboratory of Petroleum Resources, Gansu Province(1309RTSA041) ; 41020124002) ; Natural Science Foundation of China(41273112 ; Chinese Academy of Sciences(2015VEA032) ; Key Laboratory of Petroleum Resources, Gansu Province(1309RTSA041) ; 41020124002) ; Natural Science Foundation of China(41273112 ; Chinese Academy of Sciences(2015VEA032) ; Key Laboratory of Petroleum Resources, Gansu Province(1309RTSA041) ; 41020124002) ; Natural Science Foundation of China(41273112 ; Chinese Academy of Sciences(2015VEA032) ; Key Laboratory of Petroleum Resources, Gansu Province(1309RTSA041) ; 41020124002)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62488]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Zheng, Guodong; Ma, Xiangxian
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
3.UCSD, Scripps Inst Oceanog, Fluids & Volatiles Lab, La Jolla, CA 92093 USA
4.Lanzhou Univ, Minist Educ, Key Lab Mech Disaster & Environm Western China, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714		 Zheng, Guodong,Ma, Xiangxian,Guo, Zhengfu,et al. Gas geochemistry and methane emission from Dushanzi mud volcanoes in the southern Junggar Basin, NW China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2017,149:184-190.
APA Zheng, Guodong.,Ma, Xiangxian.,Guo, Zhengfu.,Hilton, David R..,Xu, Wang.,...&Chen, Wenxing.(2017).Gas geochemistry and methane emission from Dushanzi mud volcanoes in the southern Junggar Basin, NW China.JOURNAL OF ASIAN EARTH SCIENCES,149,184-190.
MLA Zheng, Guodong,et al."Gas geochemistry and methane emission from Dushanzi mud volcanoes in the southern Junggar Basin, NW China".JOURNAL OF ASIAN EARTH SCIENCES 149(2017):184-190.

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来源：地质与地球物理研究所

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