Study on Coal-Accumulation Model of East Sea Shelt Basin

In order to explore coal and oil-gas renounces in the East China Sea shelf basin, based on the sequence stratigraphy and the coalfield geology as the gu ide, in combination with the structural geology and sedimentology related theory, the coal-accumulation model in the formation process of theEast China Sea shelf fault depression basin was discussed.The results showed that there were many types of sedimentary coal bearing structures in East China Sea Basin and the sedimentary e nvironment with variety.Generally there was a continental facies coal bearing structure mainly in the north and there was lttoral facies and marine & terrestrial transition facies mainly in the south.The seams would have multi facies zone and would be in a pattern of a multi seam central distribution.The regional structure frame and the st ructure background controlled the coal-accumulation function of the fault depression basin formation and development process.And the sedimentary structure controlled the structure frame and coal-accumulation function of the coal-accumulation basin.