鄂东南奥陶纪地层沉积特征及沉积作用研究

STUDY ON THE SEDIMENTARY CHARACTERISTICS AND SEDIMENTATION OF THE STRATA IN ORDOVICIAN PERIOD IN SOUTHEASTERN HUBEI

鄂东南奥陶纪地层，以通山—崇阳为界，其南、北岩石类型存在明显差异，据其沉积特征，古生态面貌、古地理特征和沉积作用的调查研究资料表明，该区自北向南，是由碳酸盐岩台地，斜坡和盆地三个相区组成的一幅十分完整的岩石地层格架。

Taking Tongshan-Congyiang as the boundry, the south part and north part of Southeastern Hubei differ evidently in rock type in the strata in Ordovician. Based on the studies of the sedimentology, poleoecology, paleogeography and sedimentation, this paper advances that a extremely integrated lithostratigraphic framework in the reserch area is composed of three factes tracts including carbonate platform, clinoform and basin ranged from north to south.