A STUDY ON THE SEDIMENTATION MECHANISM AND ENVIRONMENTS OF QUATERNARY BOULDER CLAY DEPOSITS AT PIEDMENT IN MOUNT HUANGSHAN, ANHUI PROVINCE
Huang Peihua(Department of Earth and Space Science,University of Science and Technology of China,Hefei 230026)
According to the analyses of grain size parameters(Mz,δ1,SK1 and Kg),frequency curve, accumulative curve, probability accumulative curve, δ1-Mz discrete map, claymineral and sporo-pollen,etc. , the Quaternary boulder clay, which was considered asterminal moraine by S. J. Lee in 1936,are studied in this paper. The research resultsshow that the characters of the boulder clay deposits are different from glacial moraine and debris flow. The boulder clay deposits are really a flood deposlits of pluvial fan in subtropic humid climate and not a moraine deposits in cold glacial climate.