• 责任者：Du Yongdeng (State Key Laboratory of Geo-Processes and Mineral Resources ; China University of Geosciences ; Wuhan 430074 ; China) ; Zhang Lei
• 刊名：Geological Review
• 出版年：2009
• 卷期：55(4)
• 关键词：晚二叠世 ; Upper Permian ; 剥蚀面 ; degradation surfaces ; 风化壳 ; weathering crust ; 浙江 ; Zhejiang Province
• 页码：p.503-508
• 图表：5 illus., 27 refs.
• 分类号：1200
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

ation: widow-orphan" class=MsoNormal>Well-preserved weathering crust is discovered at the top of the Changxing Formation in Huangzhishan section, Huzhou, ate w:st="on">Zhejiangate> Province. The characteristics of the weathering crust are described in this paper. The unconformity represented by the weathering crust is located at the lowermost part of Clarkina meishanensis Zone. In stratigraphic horizon, it can be correlated with the bottom of the Bed 25 at the Meishan Section D and is coincident with the main episode of the mass extinction at the end-Permian. Therefore, it is very significance for discussing the sea-level change and the causes of the mass extinction at the end-Permian to study the weathering crust in detail.