摘要
大范围系统的基础地球化学研究国内外均不多见，进行区域地球化学分区仍处在摸索阶段．在区域基础地球化学研究基础上，在长江中下游及邻区利用多元示踪元素（常量元素、高场强元素、基性元素、亲氧碱性元素、成矿元素及性质相似元素比值）和Ｐｂ，Ｎｄ同位素进行不同区域地壳、同一区域地壳内不同级次的地球化学分区，从而厘定了研究区区域地壳的边界。
Systematic studies of regional geochemistry on a provincial scale inside and outside China are rarely seen. In this sense, the investigation into the regional geochemical subdivision is still in its initial stage. On the basis of the investigation into the regional basic geochemistry, the authors have been engaged in the geochemical division of middle and lower reaches of Yangtze River and neighboring areas in terms of multiple tracer elements (for examples, major elements, high field_strength elements, basic elements, oxyphile alkaline elements, ore_forming elements, and the ratios between elements with similar properties) and isotopic compositions of Pb, Nd in different regional crusts and in different classes of geochemical subdivision within the same regional crust. Therefore, the present research clearly delineats the border between regional crusts and presents us the geochemical basis for the regional metallogenic forecasting.
出处
《地球科学（中国地质大学学报）》
EI
CSCD
北大核心
1999年第3期287-291,共5页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金
国家"八五"科技攻关项目
关键词
基底
地球化学分区
区域成矿
远景预测
长江
geochemical division of basement
regional metallogenic forecasting
middle and lower reaches of Yangtze River and neighboring regions.
