Sedimentary Environment Evolution and Fossil Taphonomic Implications of Middle Triassic Guanling Formation in Luoping, Yunnan Province

被引：0
|
作者：
Ma Z. [1 ]
Zhang Q. [1 ]
Wen W. [1 ]
Hu S. [1 ]
Zhou C. [1 ]
Huang J. [1 ]
Ding Z. [2 ]
机构：
[1] Chengdu Center of China Geological Survey, Chengdu
[2] College of Earth Sciences, Chengdu University of Technology, Chengdu
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2020年 / 45卷 / 08期
关键词：
Depositional environment; Fossil; Guanling Formation; Luoping Biota; Sedimentology; Yunnan Province;
D O I：
10.3799/dqkx.2020.114
中图分类号：
学科分类号：
摘要：
The Luoping Biota is typical of the full recovery of the marine ecosystem after the end-Permian mass extinction. In order to more fully understand the sedimentary environment background of the Luoping Biota, the outcrop observation and microfacies analysis were used to study the sedimentary environment of Member II of the Middle Triassic Guanling Formation in the Yishida section of Luoping County, Yunnan Province. Five sedimentary facies types are recognized: open platform, restricted platform (lagoon), tidal flat, intra-platform basin, and intra-platform shoal. Member II of the Guanling Formation presents multiple stages of intra-platform shoal. The types of particles in the shoal are mainly composed of peloids and coated particles, followed by a small amount of ooids and biological debris. Intergranular pores are mainly filled with sparry calcite cement and minor carbonate mud. The size of the shoal is small. Based on the results of this study and neighboring areas, it is concluded that there was a large-scaled sea level rise during the Pelsonian substage of the early Anisian, which resulted in a rapid increase in the water depth of the sedimentary environment and the development of intra-platform basins. Its relatively low-energy and anoxic environment facilitates the exceptionally well preservation of the Luoping Biota. © 2020, Editorial Department of Earth Science. All right reserved.
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页码：3104 / 3118
页数：14
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共 41 条
  • [1] Adachi N., Ezaki Y., Liu J. B., The Fabrics and Origins of Peloids Immediately after the End-Permian Extinction, Guizhou Province, South China, Sedimentary Geology, 164, 1-2, pp. 161-178, (2004)
  • [2] Bai J.K., Zhang Q.Y., Huang J.Y., Et al., Middle Triassic Sequence-Stratigraphy and Sedimentary Facies Analysis at the Shangshikan Section of Luoping County, Yunnan Province, Journal of Stratigraphy, 35, 3, pp. 278-287, (2011)
  • [3] Bai J.K., Zhang Q.Y., Yin F.G., Et al., Preliminary Study of Taphonomic Environment of Luoping Biota: Evidence from Sedimentary Structures, Acta Sedimentologica Sinica, 28, 4, pp. 762-767, (2010)
  • [4] Benton M. J., Twitchett R. J., How to Kill (almost) All Life: The End-Permian Extinction Event, Trends in Ecology & Evolution, 18, 7, pp. 358-365, (2003)
  • [5] Chen A.Q., Yang S., Chen H.D., Et al., The Sedimentary Filling Model of Epeiric Platform and New Inspiration of Innercratonic Carbonate for Oil & Gas Exploration, Acta Petrologica Sinica, 33, 4, pp. 1243-1256, (2017)
  • [6] Chen Z. Q., Benton M. J., The Timing and Pattern of Biotic Recovery Following the End-Permian Mass Extinction, Nature Geoscience, 5, 6, pp. 375-383, (2012)
  • [7] Fan J.S., Wu Y.S., Sedimentary Characteristics and Environments of the Poduan Formation of Middle Triassic in Guanling of Guizhou Province, Journal of Palaeogeography, 4, 1, pp. 67-74, (2002)
  • [8] Flugel E., Microfacies of Carbonate Rocks: Analysis, Interpretation and Application, (2004)
  • [9] Gu J.Y., Ma F., Ji L.D., Types, Characteristics and Main Controlling Factors of Carbonate Platform, Journal of Palaeogeography, 11, 1, pp. 21-27, (2009)
  • [10] Guan S.C., Yan H.Y., Qiu D.Z., Et al., Investigations on the Marine Sedimentary Environmental Model of China in Late Proterozoic to Triassic Periods, Oil & Gas Geology, 1, 1, pp. 2-17, (1980)
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