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Article: Middle Permian fusulines from the Thitsipin Formation of Shan State, Myanmar and their palaeobiogeographical and palaeogeographical implications

Papers in Palaeontology - Volume 6 Issue 2 - Cover
Publication: Palaeontology
Volume: 6
Part: 2
Publication Date: May 2020
Page(s): 293 327
Author(s): Yi‐Chun Zhang, Kyi Pyar Aung, Shu‐Zhong Shen, Hua Zhang, Than Zaw, Lin Ding, Fu‐long Cai, and Kyaing Sein
DOI: 10.1002/spp2.1298
Addition Information

How to Cite

ZHANG, Y., AUNG, K.P., SHEN, S., ZHANG, H., ZAW, T., DING, L., CAI, F., SEIN, K. 2020. . Papers in Palaeontology, 6, 2, 293-327. DOI: /doi/10.1002/spp2.1298

Author Information

  • Yi‐Chun Zhang - State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology & Center for Excellence in Life & Paleoenvironment Chinese Academy of Sciences 39 East Beijing Road Nanjing 210008 China
  • Kyi Pyar Aung - Department of Geology Banmaw University Kachin State Myanmar
  • Shu‐Zhong Shen - School of Earth Sciences & Engineering Nanjing University Nanjing 210023 China
  • Hua Zhang - State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology & Center for Excellence in Life & Paleoenvironment Chinese Academy of Sciences 39 East Beijing Road Nanjing 210008 China
  • Than Zaw - Key Laboratory of Continental Collision & Plateau Uplift Institute of Tibetan Plateau Research Beijing 100101 China
  • Than Zaw - Myanmar Geosciences Society Yangon Myanmar
  • Lin Ding - Key Laboratory of Continental Collision & Plateau Uplift Institute of Tibetan Plateau Research Beijing 100101 China
  • Lin Ding - Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of Sciences Beijing 100101 China
  • Fu‐long Cai - Key Laboratory of Continental Collision & Plateau Uplift Institute of Tibetan Plateau Research Beijing 100101 China
  • Kyaing Sein - Myanmar Geosciences Society Yangon Myanmar

Publication History

  • Issue published online: 25 April 2020
  • Manuscript Accepted: 13 November 2019
  • Manuscript Received: 05 April 2019

Funded By

the Second Tibetan Plateau Scientific Expedition and Research. Grant Number: 2019QZKK0706
National Science Foundation of China
Strategic priority Research Program (B) of the Chinese Academy of Sciences. Grant Numbers: XDB26000000, XDB18030400
Youth Innovation Promotion Association CAS. Grant Number: 2016282

Online Version Hosted By

Wiley Online Library
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Abstract

Fusuline faunas including 29 species belonging to 19 genera/subgenera are described from the Thitsipin Formation in eight sections/localities on the Shan Plateau in eastern Myanmar. These fusulines broadly indicate a Midian (middle Permian, Guadalupian) age. The lower diversity and the presence of some genera, such as Monodiexodina and Eopolydiexodina, suggest that the Sibumasu Block belonged to the palaeobiogeographic Cimmerian Province during the Midian. Furthermore, quantitative cluster analysis of middle Permian fusulines from the Shan Plateau and adjacent Cimmerian blocks suggests close faunal affinities between the Sibumasu Block and the Baoshan Block in western Yunnan. More importantly, the widespread occurrence of fusulines Eopolydiexodina afghanensis and Jinzhangia shengi on the Shan Plateau is similar to that of contemporaneous fusuline faunas from the Baoshan Block and the South Qiangtang Block but different to that of the Tengchong and Lhasa Blocks, which are dominated by the characteristic Nankinella–Chusenella assemblage. This faunal discrepancy provides strong evidence that the Bangong–Nujiang suture passes through the Gaoligong Orogen in western Yunnan rather than through the Myitkyina ophiolites in northern Myanmar. Additionally, palaeobiogeographical analysis of these fusuline faunas from the Lhasa, Tengchong, South Qiangtang, Baoshan and Sibumasu Blocks implies that the Bangong–Nujiang Ocean might have been present before the Midian.

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