摘要
根据各构造单元不同结构层的地球化学特征和元素在地表的分布特征研究结果 ,认为郴临深大断裂带及其两侧地球化学特征明显受不同构造单元、基底与上地幔元素含量差异和地壳演化程度差异的制约 ,结合元素的区域分布规律 ,将其分为 3个构造地球化学分区。郴临深大断裂带东侧地壳成熟度较高 ,构造岩浆活动频繁 ,有利于亲壳的不相容元素富集成矿 ;西侧地壳发展较稳定 ,下基底又富含亲幔的相容元素 ,导致金之类深源元素富集成矿 ;断裂带本身则为此两成矿作用的混合。
Based on research of geochemical characteristics of different tectonic layers and distribution of elements in the crust, the regional geochemical characteristics along the Chenzhou Linwu deep seated fault zone and its both sides is obviously controlled by tectonic units, basement, component of upper mantle and crust evolution. Three tectonic geochemical divisions has been subdivided according to regional distribution of the elements. It is favorable for enrichment of incompatible elements due to the higher crust maturation and frequent magmatic activities to the east part of the Chenzhou Linwu deep seated fault zone, while the deep derived elements, such as gold, can be easily enriched to form ore deposit to west side because of relative stable crust evolution with abundant compatible elements in the basement. The fault belt shares the two kinds of mineralization mentioned above.
出处
《华南地质与矿产》
CAS
2000年第3期17-24,共8页
Geology and Mineral Resources of South China
基金
地质矿产部"八五"科技攻关项目"武夷-云开典型成矿区矿产预测"二级课题"罗霄-武夷隆起区成矿地质环境和成矿预测研究"下属三级专题"湖南郴州-临武断裂带两侧成矿预测及靶区优选"(85-01-007-01-1)的部分成果
关键词
地球化学
郴临断裂带
湖南
geochemistry
Chenzhou Linwu fault belt
Hunan
