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  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院油气资源研究重点实验室
Organic matter provenance and depositional environment of marine-to-continental mudstones and coals in eastern Ordos Basin, China-Evidence from molecular geochemistry and petrology

文献类型：期刊论文

作者Qi, Yu1,5,6; Ju, Yiwen6; Tan, Jingqiang4; Bowen, Leon3; Cai, Chunfang1; Yu, Kun6; Zhu, Hongjian6; Huang, Cheng6; Zhang, Weilai2
刊名INTERNATIONAL JOURNAL OF COAL GEOLOGY
出版日期2020-01-02
卷号217页码:14
关键词Organic geochemistry Organic petrology Pyrite Organic matter provenance Mudstone Coal Ordos Basin
ISSN号0166-5162
DOI10.1016/j.coal.2019.103345
英文摘要Cyclothems, composed of interbedded mudstone, coal and sandstone layers, make up the Taiyuan and Shanxi Formations in the Late Carboniferous to Early Permian in North China under a marine-to-continental depositional environment. The cyclothems act as important fossil energy hosts, such as coalbeds, hydrocarbon source rocks and unconventional natural gas reservoirs. Organic geochemistry and petrology of mudstones and coals in the Taiyuan and Shanxi Formations in the eastern Ordos Basin were studied to reveal the organic matter sources and paleoenvironments. Total organic carbon (TOC) contents vary from 1.1 wt% (mudstone) to 72.6 wt% (coal). The samples are mainly within the oil window, with the T-max values ranging from 433 to 469 degrees C. Organic petrology and source biomarkers indicate that the mudstones were sourced from a mixed organic matter input, and terrigenous organic matter predominates over aquatic organic matter. The coals are mostly sourced by terrigenous organic matter inputs. High concentrations of hopanes argue for a strong bacterial input. Some m/z 217 mass chromatograms have peaks at the hopanes' retention times as a result of high hopane to sterane ratios. These hopane-derived peaks do not interfere the identification of the steranes because the hopanes and the steranes have different retention times. Maturity-dependent biomarkers demonstrate that the samples have been thermally mature, which agree with the T-max values. Anomalously low C-29 20S/(20S + 20R) and C-29 beta beta/(beta beta + alpha alpha) sterane ratios are present in all the samples, and are interpreted as due to the terrigenous organic matter input or the coal-related depositional environment. In addition, biomarkers and iron sulfide morphology indicate that the organic matter of the mudstones deposited in a proximal setting with shallow, brackish/fresh water bodies. With consideration of preservation of organic matter, the redox conditions are dysoxic. Redox oscillations resulted in the records of oxic conditions in some samples. Finally, the coals and the mudstones mainly generate gas and have poor oil generative potential.
WOS关键词STABLE CARBON-ISOTOPE ; NATURAL-GAS ACCUMULATIONS ; CARBONIFEROUS RUHR BASIN ; PERMIAN HUMIC COALS ; CHAD BORNU BASIN ; SOURCE ROCKS ; LOWER TOARCIAN ; NORTHEASTERN NIGERIA ; MATURITY PARAMETERS ; BIOLOGICAL MARKERS
资助项目National Natural Science Foundation of China[41530315] ; National Natural Science Foundation of China[41872160] ; National Natural Science Foundation of China[41372213] ; National Science and Technology Major Project of China[2016ZX05066003] ; National Science and Technology Major Project of China[2016ZX05066006] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA05030100] ; Sichuan Science and Technology Support Program[2016JZ0037] ; UK-China Joint Research and Innovation Partnership Fund[201703780094]
WOS研究方向Energy & Fuels ; Geology
语种英语
WOS记录号WOS:000510806500011
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; Sichuan Science and Technology Support Program ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund ; UK-China Joint Research and Innovation Partnership Fund
源URL[http://ir.iggcas.ac.cn/handle/132A11/95651]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Ju, Yiwen
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
2.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
3.Univ Durham, Dept Phys, South Rd, Durham DH1 3LE, England
4.Cent S Univ, Sch Geosci & Infophys, Changsha 410012, Peoples R China
5.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England
6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Qi, Yu,Ju, Yiwen,Tan, Jingqiang,et al. Organic matter provenance and depositional environment of marine-to-continental mudstones and coals in eastern Ordos Basin, China-Evidence from molecular geochemistry and petrology[J]. INTERNATIONAL JOURNAL OF COAL GEOLOGY,2020,217:14.
APA Qi, Yu.,Ju, Yiwen.,Tan, Jingqiang.,Bowen, Leon.,Cai, Chunfang.,...&Zhang, Weilai.(2020).Organic matter provenance and depositional environment of marine-to-continental mudstones and coals in eastern Ordos Basin, China-Evidence from molecular geochemistry and petrology.INTERNATIONAL JOURNAL OF COAL GEOLOGY,217,14.
MLA Qi, Yu,et al."Organic matter provenance and depositional environment of marine-to-continental mudstones and coals in eastern Ordos Basin, China-Evidence from molecular geochemistry and petrology".INTERNATIONAL JOURNAL OF COAL GEOLOGY 217(2020):14.

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来源：地质与地球物理研究所

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