江西贵溪毫纲山剖面原罗塘组的研究及其意义

分析了江西贵溪毫纲山剖面原罗塘组红色碎屑岩系的沉积特征、化石特征及时代意义 ,讨论了岩石地层划分及其命名。原罗塘组是一个完整沉积旋回的产物 ,其地质时代属早白垩世晚期 -晚白垩世早期 ,它不能与弋阳盆地的周家店组对比 ,也不能与赣州盆地的赣州组或“赣州群”对比。建议将罗塘组升组为群 ,并根据岩性岩相特征进一步划分为白埠组、周田组和邓家组。

A Study on the "Luotang Formation" in the Haogangshan Section of Guixi, Jiangxi

This paper analyses the features of sedimentation, fossil assemblages of the initial Luotang For mation in the Haogangshan section of Guixi, Jiangxi and discusses its lithostratigraphical division and nomenclature. The facts that the initial Luotang Formation is from late Early Cretaceous to early Late Cretaceous in age and that the initial Luotang Formation does not correlate with to the Zhoujiadian Formation in Yiyang Basin and “the Ganzhou Group” in Ganzhou Basin are now proved. Based on the features of sedimentary facies, the initial Luotang Formation is divided into the Baibu, Zhoutian Formation and Dengjia Formations.