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Geochemical and isotopic characteristics of fluids in the Niutuozhen geothermal field, North China

文献类型：期刊论文

作者Pang, Jumei1,2,3; Pang, Zhonghe1,2,3; Lv, Min1,2,3; Tian, Jiao1,2,3; Kong, Yanlong1,2,3
刊名ENVIRONMENTAL EARTH SCIENCES
出版日期2018
卷号77期号:1
关键词Geothermal fluids Reservoir temperature Gas Carbon isotope Helium isotope
ISSN号1866-6280
DOI10.1007/s12665-017-7171-y
文献子类Article
英文摘要Niutuozhen geothermal field is located in the Jizhong graben, belonging to the northern part of Bohai Bay Basin in North China. Chemical and isotopic analyses were carried out on 14 samples of the geothermal fluids discharged from Neogene Minghuazhen (Nm), Guantao (Ng), and Jixianian Wumishan (Jxw) formations. The delta H-2 and delta O-18 in water, delta C-13 in CH4, delta C-13 in CO2, and He-3/He-4 ratio in the gases were analyzed in combination with chemical analyses on the fluids in the Niutuozhen geothermal field. The chemical and isotopic compositions indicate a meteoric origin of the thermal waters. The reservoir temperatures estimated by chemical geothermometry are in the range between 60 and 108 degrees C. The results show that the gases are made up mainly by N-2 (18.20-97.42 vol%), CH4 (0.02-60.95 vol%), and CO2 (0.17-25.14 vol%), with relatively high He composition (up to 0.52 vol%). The chemical and isotopic compositions of the gas samples suggest the meteoric origin of N-2, predominant crustal origins of CH4, CO2, and He. The mantle-derived He contributions are calculated to be from 5 to 8% based on a crust-mantle binary mixing model. The deep temperatures in the Jxw reservoir were evaluated based on gas isotope geothermometry to be in the range from 141 to 165 degrees C. The mantle-derived heat fraction in the surface heat flow is estimated to be in the range of 48-51% based on He-3/He-4 ratios.
WOS关键词GEOGRAPHICAL-DISTRIBUTION ; VOLATILE FLUXES ; NEW-ZEALAND ; HEAT-SOURCE ; CARBON ; HELIUM ; GAS ; ORIGIN ; SYSTEM ; BASIN
WOS研究方向Environmental Sciences & Ecology ; Geology ; Water Resources
语种英语
WOS记录号WOS:000424366000002
出版者SPRINGER
资助机构National Natural Science Foundation of China(41372257) ; National Natural Science Foundation of China(41372257) ; National Natural Science Foundation of China(41372257) ; National Natural Science Foundation of China(41372257) ; National Natural Science Foundation of China(41372257) ; National Natural Science Foundation of China(41372257) ; National Natural Science Foundation of China(41372257) ; National Natural Science Foundation of China(41372257)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82870]  
专题中国科学院地质与地球物理研究所
通讯作者Pang, Zhonghe
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, 19 Beituchengxi Rd, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Pang, Jumei,Pang, Zhonghe,Lv, Min,et al. Geochemical and isotopic characteristics of fluids in the Niutuozhen geothermal field, North China[J]. ENVIRONMENTAL EARTH SCIENCES,2018,77(1).
APA Pang, Jumei,Pang, Zhonghe,Lv, Min,Tian, Jiao,&Kong, Yanlong.(2018).Geochemical and isotopic characteristics of fluids in the Niutuozhen geothermal field, North China.ENVIRONMENTAL EARTH SCIENCES,77(1).
MLA Pang, Jumei,et al."Geochemical and isotopic characteristics of fluids in the Niutuozhen geothermal field, North China".ENVIRONMENTAL EARTH SCIENCES 77.1(2018).

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来源：地质与地球物理研究所

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