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Organofacies and paleoenvironment of lower Carboniferous mudstones (Dishuiquan Formation) in Eastern Junggar, NW China

文献类型：期刊论文

作者Zhang, Shengyin1; Wu, Tao2; Zhang, Shuncun1; Cao, Chunhui1; Ma, Wanyun2; Shi, Ji'an1; Sun, Guoqiang1
刊名INTERNATIONAL JOURNAL OF COAL GEOLOGY
出版日期2015-10-01
卷号150页码:7-18
关键词Organic matter source Biomarkers Paleoenvironment Paleoclimate Lower Carboniferous mudstones Eastern Junggar
DOI10.1016/j.coal.2015.08.004
文献子类Article
英文摘要The sedimentary rocks of the Dishuiquan Formation represent an important potential source for volcanic rock reservoirs and record the transition of the depositional environment from marine to terrestrial during paleo-Junggar oceanic subduction. The source rock potential and paleoenvironment of mudstones from Dishuiquan Formation in Eastern Junggar, were determined by organic petrography, Rock-Eval, molecular and stable carbon (delta C-13) analyses. TOC, S-2, and hydrogen index (HI) values suggest a fair to good organic richness in mudstone samples from the C-2 well. Moreover, an early mature to mature state for all the samples is inferred based on the Rock-Eval and biomarker parameters. The maceral composition, molecular geochemistry and carbon isotopic results for kerogen reveal that all the mudstone samples are characterized by a mixed organic matter assemblage (Types with relatively high percentages of terrigenous organic matter. The low to intermediate values of Pr/Ph and the high abundances of beta-carotene and gammacerane indicate the presence of a dysoxic, reducing, high-salinity sedimentary environment during the deposition of the Dishuiquan Formation. Numerous parameters derived from the organic geochemical analyses indicate that the terrigenous organic matter increased with decreasing salinity and oxidation in the sedimentary environment. This study concludes that a warm, wet climate provided a continuous fluvial input of terrigenous plant debris and fresh water. The organic geochemical data, combined with the tectonic setting, reveal a restricted, semi-closed marine depositional environment during the deposition of the Dishuiquan Formation in the early Carboniferous. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词PURPLE SULFUR BACTERIA ; ORGANIC-MATTER ; SOURCE ROCKS ; CENTRAL-ASIA ; CONTINENTAL GROWTH ; NORTHWESTERN CHINA ; SONGLIAO BASIN ; OROGENIC BELT ; CRUDE OILS ; GEOCHEMISTRY
WOS研究方向Energy & Fuels ; Geology
语种英语
WOS记录号WOS:000365056200002
资助机构National Science and Technology Major Project(2011ZX05008-003) ; National Science and Technology Major Project(2011ZX05008-003) ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Key Laboratory Project of Gansu Province(1309RTSA041) ; National Science and Technology Major Project(2011ZX05008-003) ; National Science and Technology Major Project(2011ZX05008-003) ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Key Laboratory Project of Gansu Province(1309RTSA041)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62169]  
专题地质与地球物理研究所_兰州油气中心
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Peoples R China
2.PetroChina, Xinjiang Oilfield Co, Karamay 834000, Xinjiang, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Shengyin,Wu, Tao,Zhang, Shuncun,et al. Organofacies and paleoenvironment of lower Carboniferous mudstones (Dishuiquan Formation) in Eastern Junggar, NW China[J]. INTERNATIONAL JOURNAL OF COAL GEOLOGY,2015,150:7-18.
APA Zhang, Shengyin.,Wu, Tao.,Zhang, Shuncun.,Cao, Chunhui.,Ma, Wanyun.,...&Sun, Guoqiang.(2015).Organofacies and paleoenvironment of lower Carboniferous mudstones (Dishuiquan Formation) in Eastern Junggar, NW China.INTERNATIONAL JOURNAL OF COAL GEOLOGY,150,7-18.
MLA Zhang, Shengyin,et al."Organofacies and paleoenvironment of lower Carboniferous mudstones (Dishuiquan Formation) in Eastern Junggar, NW China".INTERNATIONAL JOURNAL OF COAL GEOLOGY 150(2015):7-18.

入库方式： OAI收割

来源：地质与地球物理研究所

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