DISCOVERY OF PERIGLACIAL PHENOMENA FORMED AT THE LAST STAGE OF LATE PLEISTOCENE ON CONTINENTAL SHELF,NORTH CHINA

At the last Ice Age,the sea level lowered and accordingly water retreated from continental shelf. Affected by cold snap from the North,the temperatures of plain area of East Asia are lower than other areas in same geographic latitude,and the continental shelf plain became one of periglacial geomorphies in east China. These shelf periglacial geomorphy includes widely distributed sandlots,groups of sand dunes,bits and pieces of washin sediment,sedimentary texture of the ice-contact origin,sedimentary texture similar to ice wedge in the northern East China Sea ect.