关键词: (14)~C年龄测定;海洋沉积物;南极半岛西北海域

Abstract:

This paper deals with a result of radiocarbon dating of the surface sediments dreged from the sea area northwest of the Antarctic Peninsula and measurement of modern radiocarbon on two specimens (living byophtes and penguin bones ) collected on King George Island. The information of two modern carbon samples indicates that the concentration of car-bon-14 in the sediments from the sea area northwest of the Antarctic Peninsula is different from that in atmospheric CO2.This difference in 14C concentration resulted in increasing age of surface sediments is preliminarily discussed in the paper. The author points out that the 14C age of the surface sediments in the sea area northwest . of the Antarctic Penisula is 456 years older than the actual ages at least (the increasing concentration of 14C was caused by nuelar explosion which is not considered) .