从稀土元素判别早前寒武纪岩石物质来源评价中条山铀、铜区域成矿远景

EVALUATION OF REGIONAL METALLOGENETIC PERSPECTIVE FOR URANIUM AND COPPER IN ZHONGTIAOSHAN FROM THE SOURCES OF SOME EARLY PRECAMBRIAN ROCKS EVIDENCED BY RARE EARTH ELEMENTS

稀土元素已被公认为是判断岩石物质来源的有效地球化学指示剂:而物源,尤其是含矿层的物源(有时包括成矿组分的来源)对区域成矿远景评价具有很重要的意义。本文主要从稀土元素地球化学角度研究了中条山上太古界涑水杂岩、下元古界绛县群、含矿层中条群篦子沟组代表性岩石的物质来源,并从物源(矿源)对含矿层的成铀、成铜远景进行了评价。指出了铀、铜成矿的有利地段。

Rare earth elements (REE) are well known as effective geochemical indicators for the judgement of material sources of the rocks. The material sources, especially the sources of ore bed (sometimes containing ore sources) are very important to evaluate the regional metallogenetic perspective. This paper mainly studies the material sources of representative rocks in the Upper Archean Shushui Complex, the Lower Proterozoic Jiangxian Group and the Bizigou Formation of Zhongtiao Group of the ore bed from REE geochemistry's point of view. Furthermore, according to the material sources(or ore sources) of ore-bearing rocks, metallogenetic perspective for uranium and copper is evaluated, and some favourable regions for uranium and copper mineralization in Zhongtiaoshan is pointed out.