内蒙古古生代巴特敖包剖面的再研究

RESTUDY ON THE PALAEOZOIC BATEAOBAO SECTION IN INNER MONGOLIA,CHINA

巴特敖包剖面(即巴特敖包—仲阿木乌苏剖面)是内蒙古巴特敖包地区最有代表性的剖面,也是巴特敖包群的典型剖面。以往依据底栖大化石的研究,将其全部归入“上志留统”。依据牙形刺的研究,可以证实,巴特敖包剖面内部有不少断层,巴特敖包剖面的地层是由志留系—泥盆系—志留系—泥盆系地层交错而成,并非是一个连续的剖面,也不能全部归入“上志留统”。巴特敖包群应当解体,不再使用。巴特敖包剖面仍需详细研究,有可能发现志留系—泥盆系连续的界线层剖面。

Bateaobao section in Inner Mongolia were studied by Guo S. Z. （1978）, Li W. G. et al. （1982,1985） and Su Y. Z. et al. （1983）. They had got a consensus about the age of this section which is from Late Wenlock to Late Silurian. They also recognized that there were some faults within the section （Text-fig. 1）. But they still considered that the succession of strata were basically normal. Li W.G. et al. （1985）subdivided this section into two formations.