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Discovery of Ordovician-Devonian strata in the south of the Qiangtang area, Tibet

Zhang, Yichun, Li, Cai, Cheng, Liren and Zhai, Qingguo 2004, Discovery of Ordovician-Devonian strata in the south of the Qiangtang area, Tibet, Geological bulletin of China, vol. 23, no. 5, pp. 602-604.

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Title Discovery of Ordovician-Devonian strata in the south of the Qiangtang area, Tibet
Author(s) Zhang, Yichun
Li, Cai
Cheng, Liren
Zhai, Qingguo
Journal name Geological bulletin of China
Volume number 23
Issue number 5
Start page 602
End page 604
Total pages 3
Publisher Kexue Chubanshe
Place of publication Beijing, China
Publication date 2004
Keyword(s) Tibet
qiangtang
tashishan
Ordovician-Devonian
Summary Low-grade metamorphic rocks are exposed extensively in the Qiangtang area, Tibet. There is a great dispute about the age of the strata because of no reliable fossil evidence and other chronological evidence. Cephalopods, crinoids, graptolites and tentaculites fossils are discovered at Tashi Hill north of Gangtang Co. Primary identification indicates that the cephalopod is Sinoceras,Michelinoceras, Wennanoceras, Archigeisonoceras etc. and the crinoid is Monograptus. The Sinoceras-Michelinoceras assemblage is the key fossil assemblage of Mid Ordovician Baotaan age, which reflects the Mid Ordovician aspects. There are several tens of meters of fossil-free clastic rocks below the Mid Ordovician cephalopod-bearing horizon, which are probably Ordovician sediments. The discovery of Ordovician-Devonian biotas and strata provide new important evidence for the stratigraphic division and correlation and the study of the tectonic evolution of the Qiangtang area.
Notes (in Chinese with English abstract)
Language chi
Field of Research 049999 Earth Sciences not elsewhere classified
Socio Economic Objective 970104 Expanding Knowledge in the Earth Sciences
HERDC Research category C3.1 Non-refereed articles in a professional journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039462

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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