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Depositional features and sedimentary model of Buqu Stage in Mid-Jurassic in Quangtang Basin, Xizang (Tibet), China

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Abstract

The largest Mesozoic northward transgression in Qangtang Basin of Qinghai-Xizang (Tibet) Plateau occurred during the Buqu Stage, Middle Jurassic. Mainly filled with carbonate rocks, the whole basin is composed of transgression-regression sedimentary cycle. Field outcrops and indoor analysis revealed 8 types of sedimentary facies markers in this region. 4 types of sedimentary facies have been recognized: platform facies, platform marginal facies, foreslope facies and basin facies. Influenced by the northern Lazhuglung-Jinshajiang suture zone, central uplift region and southern Bangongco-Nujiang suture zone, these facies belts extended east-west. The sedimentary model was established based on observed depositional features. From their biological features and sedimentary characteristics, it is suggested that the paleoclimate was warm and humid at that time. The Buqu Formation is a promising target for oil and gas exploration in Shuanghu-Duoyong area in future.

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Authors and Affiliations

  1. Institute of Marine Geoscience, Ocean University of China, 266003, Wingdao, China

    Zhai Shikui & Liu Binde

  2. Economic Administration Department of Qinhuangdao Institute, Northeast University, 066000, Qinhuangdao, China

    Wang Xiangtao

  3. Qinhuangdao Branch, Daqing Petroleum Institute, 066004, Qinhuangdao, China

    Zhou Shuxin

Authors
  1. Wang Xiangtao
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  2. Zhai Shikui
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  3. Liu Binde
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  4. Zhou Shuxin
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Corresponding author

Correspondence to Wang Xiangtao.

Additional information

Sponsored by National ‘Ninth Five Year Plan’ Science and Technology Project (970204-01-01).

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Xiangtao, W., Shikui, Z., Binde, L. et al. Depositional features and sedimentary model of Buqu Stage in Mid-Jurassic in Quangtang Basin, Xizang (Tibet), China. Chin. J. Ocean. Limnol. 22, 356–364 (2004). https://doi.org/10.1007/BF02843629

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  • DOI: https://doi.org/10.1007/BF02843629

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