摘要
大地化学背景是一种区域地球化学背景.计算深度为地亮最上部的构造层.中国构造层的平均厚度为7.1km,其总质最约为1.7 × 10^(17)t.大地化学背景比地壳和岩石圈的化学背景具有更高的肯定性.其背景值对区域成矿分析和矿产资源总量评价等工作,具有更大的实用价值.本文给出我国一级大地构造单元的大地化学背景值.
The tectohogeochemieal background is one of a larger rcgionality with the uppermost tectoniclayer of the earth crust as its calculating thickness. In China his layer has an average thickness of 7.1 km and a total mass of about 1.7×10~17 metric tons. The chemical backgrcund values of tectonic structure have a higher certainty than those of the earth crust and lithcsphere. And the tectonogeochemical background is of greatly practical value to regional metallogenic analysis and mineral resource appraisement. The values of the background we dealt with for some first order gectectonic units. in China are given in this paper
出处
《地质与勘探》
CAS
CSCD
北大核心
1991年第12期1-7,共7页
Geology and Exploration
