摘要： The first author of this paper made a drilling through the water 3.5--4m deep in the Xihu Lake by using a gravity corer during 1985--1986 investigation in the Great wall Station area. The drill hole was 2.6 m deep and total 102 samples were collected. The author wishes to express her warmest thanks to Gao Xinquan, Ren Jiawen, Yang Yibi, Liu Xiaohan, Lin Yunfang and others who gave me energetic support during the sampling process.
