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Vol.XXI, No.1 >

Permian-Triassic Boundary in Middle and Eastern Tethys

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Title: Permian-Triassic Boundary in Middle and Eastern Tethys
Authors: Sheng, Jin-zhang Browse this author
Chen, Chu-zhen Browse this author
Wang, Yi-gang Browse this author
Rui, Lin Browse this author
Liao, Zhuo-ting Browse this author
Bando, Yuji Browse this author
Ishii, Ken-ichi Browse this author
Nakazawa, Keiji Browse this author
Nakamura, Koji Browse this author
Issue Date: Feb-1984
Publisher: 北海道大学
Journal Title: 北海道大学理学部紀要
Journal Title(alt): Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy
Volume: 21
Issue: 1
Start Page: 133
End Page: 181
Abstract: The recent investigation on the conformable Permian-Triassic transition beds in South China revealed the existence of the mixed-fauna beds immediately above the Changhsing Formation or its equivalent, which contain the Permian-type brachiopods and the Triassic-type ammonoids and bivalves. Three successive mixed-fauna beds, numbered 1 to 3, can be distinguished at many places. The first two are referred as the Otoceras Zone and the last one as the Ophiceras Zone based on the new discovery of Otoceras sp. from the mixed-fauna bed no. 1 and a common occurrence of Ophiceras and Claraia in bed no. 3. The correlation of the Chinese sections with Permian-Triassic sequences in other parts of the Tethys province, such as Iran, Pakistan, and India, shows some time gap between the Upper Permian and Lower Triassic in those regions with the exception of Kashmir region. The Chinese sequences contain abundant ammonoids, brachiopods and conodonts that are useful for international correlation. Thus, the Chinese section, especially of the Changxing area, is considered to be a candidate of the stratotype of the Upper Permian and the Permian-Triassic boundary.
Type: bulletin (article)
Appears in Collections:Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy > Vol.XXI, No.1

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