Abstract:

Lake core taken from Xihu in Fildes Peninsula of King Gorge Island, Antarctic could reveal the environmental change of the district.The lake core(GA 7)was 9.28 meters long and divided at 2 cm intervals. Through measuring the organic carbon,magnetic susceptibility,grain size and organic carbon isotope of GA 7 lake core , it was estimated by use of 14 C age data that there were four periods of higher temperature in Fildes Peninsula: 4800-4400aB.P., 3600-3350aB.P., 2100-1800aB.P. and 900aB.P.- present. Meanwhile, results show that there is a strikingly positive correlation between contents of organic carbon and that of organic carbon isotope(δC 13 org ) which could be the substitute indicators of environmental temperature.