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SHEN Tao, YANG Bin, LIN Jiqing, JI Panlong, LIU Qisheng, TU Zonglin. Sequence stratigraphy and sedimentary facies of the Middle to Lower Triassic strata in the Wumeng mountain area, Yunnan: A case study of the Yiliang region[J]. Sedimentary Geology and Tethyan Geology, 2019, 39(3): 21-32.
Citation: SHEN Tao, YANG Bin, LIN Jiqing, JI Panlong, LIU Qisheng, TU Zonglin. Sequence stratigraphy and sedimentary facies of the Middle to Lower Triassic strata in the Wumeng mountain area, Yunnan: A case study of the Yiliang region[J]. Sedimentary Geology and Tethyan Geology, 2019, 39(3): 21-32.
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Sequence stratigraphy and sedimentary facies of the Middle to Lower Triassic strata in the Wumeng mountain area, Yunnan: A case study of the Yiliang region

  • 1. No. 403 Geological Prospecting Party, Sichuan Bureau of Geology and Mineral Resources, Emeishan 614200, Sichuan, China;

  • 2. Chengdu Center, China Geological Survey, Chengdu 610081, Sichuan, China;

  • 3. College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, Sichuan, China

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  • Received Date: May 29, 2019
  • Revised Date: July 21, 2019
  • Published Date: September 29, 2019
    Graphical Abstract
    • Abstract
  • The Middle to Lower Triassic strata in the Yiliang region, Wumeng mountain area, Yunnan are divided into six third-order sequences in the light of detailed examination of six geological sections, and grain size and lithological analysis of more than 500 pieces of rock samples collected from the study area. The rock types include muddy-ferruginous siltstone, fine-grained feldspathic lithic sandtone, calcareous-muddy siltstone, fine-grained lithic sandstone, fine-grained calcareous lithic sandstone, bioclastic micritic limestone, marl, marl-glauconitic ferruginous bioclastic spararenite, micritic limestone-glauconitic micritic arenite, sparry oolitic limestone, siltymuddy micritic limestone, micritic limestone, etc. According to the texture, composition and mineral assemblage, the Middle to Lower Triassic strata in the Yiliang region should be assigned to the coastal and open carbonate platform facies deposits.
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    • References (12)
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