中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Depositional controls on mineral assemblage and organic matter accumulation of upper Ordovician-lower Silurian mudstones in northwestern Guizhou area, China

文献类型:期刊论文

作者Wang, Yingzhu1,3,4,5; Liang, Xing2; Zhang, Jiehui2; Chen, Zhuoheng3; Yang, Jijin1,4,5
刊名INTERNATIONAL JOURNAL OF COAL GEOLOGY
出版日期2020-11-01
卷号231页码:18
ISSN号0166-5162
关键词Yangtze Platform Shale gas reservoir Wufeng-Longmaxi mudstones Depositional condition Mineral Organic matter
DOI10.1016/j.coal.2020.103611
英文摘要The control of depositional conditions on sedimentary records spanning the Ordovician Wufeng-Silurian Longmaxi successions on the Yangtze Platform is not fully understood due to a lack of high-resolution faices analysis. This study aims to build a regional depositional model of this stratigraphic interval, to reveal the fundamental controls on the mineral assemblage and organic matter (OM) accumulation. Vertical lithofacies variability of two continuous cores in northwestern Guizhou area, south China, was analyzed at high resolution by RoqSCAN (an automated mineralogy tool) and field emission scanning electron microscope (FE-SEM) imaging. Based on multiscale sedimentary structure, mineral composition, total organic carbon (TOC) content, and geochemical characteristics, seven lithofacies were identified and interpreted as four facies associations (FA A-D) to characterize the spatio-temporal variation in these sedimentary environments. The deep-siliceous shelf FA-A is the richest in TOC content and biogenetic quartz, attributed to the strong anaerobic watermass, minimal terrestrial-flux, and enhanced organic-productivity during two global transgressions. The middle mixed shelf FA-B has moderate TOC and mixed minerals resulting from reworking processes during a fall of sea level caused by regional uplifts. Although the primary organic-productivity was promoted by increased volcanic ash fall, dilution due to increased terrestrial inputs made OM difficult to accumulate. The shallow muddy shelf FA-C and the shallow silty shelf FA-D were not favorable for OM accumulations because of the low organic productivity, strong oxygenated watermass, and high detrital dilution, through long-term sea level drops. The facies attributes of the target mudstones were remarkably influenced by regional tectonic-eustasy, in addition to global glacioeustasy.
WOS关键词MISSISSIPPIAN BARNETT SHALE ; GRAINED SEDIMENTARY-ROCKS ; FORT-WORTH BASIN ; LONGMAXI FORMATION ; SICHUAN BASIN ; MARINE SHALE ; EVAL DATA ; MECHANISMS ; PRESERVATION ; LITHOFACIES
资助项目National Science and Technology Major Project[2016ZX05034-003] ; National Science and Technology Major Project[2017ZX05035-002] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB10050100] ; National Natural Science Foundation of China[U1562215]
WOS研究方向Energy & Fuels ; Geology
语种英语
出版者ELSEVIER
WOS记录号WOS:000591617900001
资助机构National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; 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 ; 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 ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; 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 ; 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 ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; 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 ; 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 ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; 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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/98735]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Yang, Jijin
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.PetroChina Zhejiang Oilfield Co, Hangzhou 311100, Peoples R China
3.Geol Survey Canada, Nat Resources Canada, Lands & Minerals Sect, Calgary, AB T2L 2A7, Canada
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714
Wang, Yingzhu,Liang, Xing,Zhang, Jiehui,et al. Depositional controls on mineral assemblage and organic matter accumulation of upper Ordovician-lower Silurian mudstones in northwestern Guizhou area, China[J]. INTERNATIONAL JOURNAL OF COAL GEOLOGY,2020,231:18.
APA Wang, Yingzhu,Liang, Xing,Zhang, Jiehui,Chen, Zhuoheng,&Yang, Jijin.(2020).Depositional controls on mineral assemblage and organic matter accumulation of upper Ordovician-lower Silurian mudstones in northwestern Guizhou area, China.INTERNATIONAL JOURNAL OF COAL GEOLOGY,231,18.
MLA Wang, Yingzhu,et al."Depositional controls on mineral assemblage and organic matter accumulation of upper Ordovician-lower Silurian mudstones in northwestern Guizhou area, China".INTERNATIONAL JOURNAL OF COAL GEOLOGY 231(2020):18.

入库方式: OAI收割

来源:地质与地球物理研究所

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