Abstract:The stratigraphic,paleontological seismic facies and seismic data illustrated that Lichuan and Shizhu area had syneclises during the Changhsingian of Late Permian which are called Lichuan syneclise and Shizhu syneclise respectively. Based on the above findings and previous research results,the author advanced a new view about the palaeogeographical pattern and reef distribution in the Changhsingian of Late Permian in western Hubei and eastern Chongqing,i.e.,all the Lichuan syneclise,Shizhu syneclise and western Hubei Basin controlled the palaeogeographical pattern with the platform and basin alternatively arranging in western Hubei and eastern Chongqing,and the organic reef had a banding distribution along the above mentioned three platform edges. The western Hubei Basin formed in the depositional period of Member 1 of Changxing Formation,with a steep platform edge which developed the steep slope reef during the Changhsingian. The Lichuan and Shizhu syneclises formed during the depositional period of Member 1 and 2 of Changxing Formation respectively,with gentle platform edges which developed gentle slope reefs in the correspondind period. Compared with the gentle slope organic reefs,the steep slope organic reef shows a larger developing scale on horizontal and vertical.
Li Xiong. Recognition of palaeogeographical pattern and organic reef distribution in the Late Permian Changhsingian in western Hubei and eastern Chongqing[J]. JOPC, 2016, 18(2): 197-206.
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