大别造山带东段金铀钍的丰度系列、演化特征及与铀金成矿作用关系  

GOLD, URANIUM AND THORIUM ABUNDANCE SERIES AND EVOLUTION IN EAST DABIE OROGENIC BELT AS WELL AS THEIR RELATIONSHIP WITH URANIUM AND GOLD MINERALIZATION

作　　者：郭福生[1] 辜骏如[1] 林银山[1] 

机构地区：[1]华东地质学院,江西临川344000

出　　处：《大地构造与成矿学》1997年第4期330-338,共9页Geotectonica et Metallogenia

摘　　要：本文列出了大别造山带东段各地质体、地壳各结构层及区域地壳的金、铀、钍丰度计算值，并根据大陆地壳的总体构成粗略估算出这三种元素的全球陆壳丰度。大别造山带地壳金明显富集且纵向分布较均匀，具有利的金成矿背景。铀的资源潜力则大为逊色，这是由于区内基底岩石成熟度低、陆壳发育晚、稳定程度差等因素决定的。根据各类丰度系数、元素的地史演化特征与成矿地质条件等因素分析，对该区铀金矿产勘查方向提出了几点建议。This paper lists An, U and Th abundance estimates of various geological bodies,crustalstructure layers and the regional crust in Dabie orogenic belt. Based on its constitutionmodel, the authors estimate An, U and Tu abundances of the average continental crust. In Dabieorogenic belt the ore-forming background of An is good because it is enriched obviously andwell-distributed lengthwise in the crust. The resource potentiality of U is very inferior,which is determined by factors of low maturity degree of basement rock of this region,lategrowth of continental crust and bad stability. In the light of various element abundancecoefficients,element evolution history and geological condition of mineralization, the authors givesome propositions about the exploring direction of uranium and gold in the studied region.

关 键 词：造山带 金矿床 铀矿床 钍矿床 丰度 成矿作用 

分 类 号：P618.510.5[天文地球—矿床学] P619.140.5[天文地球—地质学]