Chemical characteristics of clay minerals in the sediments from the Yellow River and the Changjiang River

摘要

THE characteristics of clay minerals are controlled by the characters of weathered mother rock and the weathering environments in source area. The characteristics of clay minerals of the Yellow River should be different from those of the Changjiang River because the characters of mother rock and the weathering environments in the drainage area of the Yellow River are quite different from those in the drainage area of the Changjiang River, so it is important to find a difference between the characteristics of clay minerals of the Yellow River and the Changjiang River for the study of sedimentology in the China Sea, specially for analysing the source of sediments in a given area and for plotting of provenances in the China Sea, In recent years, a relative study has been done by some writers. In this note, we analyze the chemical characteristics of clay minerals from the Yellow River and the Changjiang River in order to reveal the differences between the clay minerals of the Yellow River and those ofthe Changjiang River.