Late Middle Permian（Guadalupian）Fusuline Fauna from the Gyanyima Area of Burang County, Tibet, China and Its Paleobiogeographic Implications
- 责任者：Zhang Yichun (State Key Laboratory of Palaeobiology and Stratigraphy ; Nanjing Institute of Geology and Palaeontology ; Nanjing 210008 ; China)
- 刊名：Acta Palaeontologica Sinica
- 出版年：2010
- 卷期：49(2)
- 关键词：Fusulinina ; 西藏 ; Tibet
- 页码：p.231-250
- 图表：3 illus., 5 plates, 1 table, 76 refs.
- 分类号：1102
- issnNo：ISSN0001-6616
- isbnNo：CN32-1188/Q
Numerous Permian limestone blocks exposed along the Yarlung-Zangbo Suture Zone have been named Tibetan facies exotic limestone blocks or Chitichun-type Permian deposits. The fusuline fauna comprises 10 genera. This fauna indicates a Midian age（Late Guadalupian or Lengwuan age of South China）in terms of the coexistence of Kahlerina, Lantschichites, Codonofusiella and Neoschwagerina. Paleobiogeographically, the fauna closely resembles that from the Lasaila exotic limestone block of Tibet, the Batain plain of Oman and the Salt Range of Pakistan, which are all characterized by absence of Afghanella-Sumatrina assemblage in the fauna, suggesting that the Gyanyima limestone block, the Lasaila limestone block, the Batain plain of Oman and the Salt Range of Pakistan, were affected by relatively cool water currents during the Middle Permian.