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ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Georeservoirs
Volume 12 - 2024 |
doi: 10.3389/feart.2024.1415479
Factors controlling of organic matter enrichment in marine-continental transitional shale: A case study of the Upper Permian Longtan Formation, northern Guizhou, China
Provisionally accepted- 1 Yangtze University, Jingzhou, China
- 2 Other, Dunhuang, China
- 3 Other, Renqiu, China
The marine-continental transitional shale of the Upper Permian Longtan Formation in northern Guizhou is an important source rock in the upper Yangtze region of China, and it holds significant potential for the exploration of shale gas. To investigate the correlation between sedimentary conditions and the accumulation of organic matters in marine-continental transitional shale, this paper performed an extensive analysis using organic geochemical testing, organic petrology examination, CP-SEM, and geochemical analysis. The Jinsha and Dafang drilling cores were selected as research subjects. The result indicate that the Longtan Formation shale in northern Guizhou was deposited in a climate that was both warm and humid, with oxic-dysoxic sedimentary water characterized by high biological productivity and a rapid sedimentation rate. The organic-rich shales during the marine and continental transitional phases were affected by various factors, including paleoclimate, water redox properties, paleo-productivity, sedimentation rate, and other variables, that directly or indirectly impacted the availability, burial, and preservation of organic matter.
Keywords: Transitional shale, organic matter, Sedimentary environment, controlling factors, Longtan Formation, Northern Guizhou
Received: 10 Apr 2024; Accepted: 15 May 2024.
Copyright: © 2024 Zhang, Hu, Cai, Deng, Wei, Wang, Li and Han. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Mingyi Hu, Yangtze University, Jingzhou, China
Quansheng Cai, Yangtze University, Jingzhou, China
Qingjie Deng, Yangtze University, Jingzhou, China
Sile Wei, Yangtze University, Jingzhou, China
Kai Wang, Other, Dunhuang, China
Yuqian Li, Other, Renqiu, China
Ye Han, Other, Renqiu, China
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