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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
Manting Zhang Manting Zhang 1Mingyi Hu Mingyi Hu 1*Quansheng Cai Quansheng Cai 1*Qingjie Deng Qingjie Deng 1*Sile Wei Sile Wei 1*Kai Wang Kai Wang 2*Yuqian Li Yuqian Li 3*Ye Han Ye Han 3*
  • 1 Yangtze University, Jingzhou, China
  • 2 Other, Dunhuang, China
  • 3 Other, Renqiu, China

The final, formatted version of the article will be published soon.

    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

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.