Identification of Geological Time of Mesozoic Strata in Hefei Basin and Its Significance

详细信息   
摘要

This paper established new stratigraphical sequences based on seismic sequences, in combination of the evidence from biostratigraphy and lithology and regional tectonic movements. The following are proposed: 1) the Middle Jurassic Zhougongshan Formation and Yuantongshan Formation are classified to Yuantongshan Formation due to their similar lithological, geophysical and palaeontological features, which could be respectively taken as the upper and lower parts of Yuantongshan Formation; 2) the Zhuxiang Formation and Heishidu Formation are contemporaneous different facies in different places, and are in the Upper Jurassic stratum; 3) the Xiangdaopu Formation is the stratum of the Lower Cretaceous; and 4) the Dingyuan Formation and Qijiaqiao Formation are contemporaneous different facies in different places, and are in the Tertiary stratum.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700