A GENERAL REVIEW OF THE LITHOFACIES AND PALEOGEOGRAPHY IN WESTERN LIAONING DURING CHANGZHOUGOU AGE TO TUANSHANZI AGE

The deposition during Changzhougou Age to Tuanshanzi Age of Changcheng Period, started from the terrigenous clastic rock foot-plate and ended by the stable carbonate rock platform, forms a complete transgression-regression cycle in Western Liaoning Province. Based on the analysis of rock assemblage, sedimentary structure, index trace elements, paleosalinity and rare earth element ratio, a regular change of sedimentary facies is found. The river delta facies is developed in the early stage; the non-barrier coast facies and shallow sea shelf facies in the middle stage; while the barrier coast facies, open platform facies and restricted platform facies, the late stage.