Age of the Silurian Lower Red Beds in South China: Stratigraphical Evidence from the Sanbaiti Section

• 作者: Zhongyang Chen Peep M?nnik Junxuan Fan Chengyuan Wang Qing Chen Zongyuan Sun Dongyang Chen Chao Li
• 来源期刊: 地球科学学刊（英文版）
• 年，卷（期）: 2021,（3）
• 页码范围: 524-533
• 页数: 10页
• 语种: 英文

摘要

The age of the Silurian Lower Red Beds in the Upper Yangtze region remains debatable. Twenty-four samples were collected for conodont biostratigraphical studies from the Paiyunan Formation in the Sanbaiti Section, Huaying, Sichuan Province. The conodont fauna from the Paiyunan Formation, together with the graptolites from the underlying Lungmachi Formation, indicates that the Lower Red Beds at Sanbaiti correspond to the lower Telychian. Comparative analysis indicates that most exposures of the Lower Red Beds in the Upper Yangtze region can be assigned, in general, to the Telychian Stage, ex- cept for several localities, where the Lower Red Beds can be roughly dated as an interval between the up- per Aeronian and lower Telychian.