南极长城湾沉积物中稀土元素的初步研究

A PRELIMINARY STUDY ON REE IN THE SEDIMENTS OF THE GREAT WALL BAY, ANTARCTICA

本文通过对长城湾表层沉积物中稀土元素的地球化学研究,认为其总量丰度、配分模式、特征参数等,均与菲尔德斯半岛的火山岩相似,因而长城湾沉积物的主要来源似为菲尔德斯半岛基岩的风化产物。

Based on the analysis of REE in the sediments from the Great Wall Bay, Antarctica, in this paper the source of sediments is discussed. It was thought that the concentration, distribution model and character parameters of the REE in the sediments are similar to those of the volcanic rock exposed on the Feldes Peninsula; that is, the abundance of the total REE of each sample is not high; the samples have the similar REE distribution patterns which are slightly enriched in LREE; REE character parameters of the sediments indicate both characteristics of island-arc tholeiite and island-arc calc-alkaline basalt. Thus the weathering products of basement rock on the peninsula should be the main source of the sediments.