中川花岗岩构造岩浆活动特征与成矿作用  

CHARATERISTICS OF TECTONO-MAGMATISM OF ZHONGCHUAN GRANITE AND ITS ORE-FORMING PROCESS

作　　者：宋忠宝[1] 冯益民[1] 何世平[1] 

机构地区：[1]中国地质科学院西安地质矿产研究所

出　　处：《西安地质学院学报》1997年第4期48-52,共5页

基　　金：地矿部八五地质找矿科技攻关项目

摘　　要：中川花岗岩在空间上呈同心圆环状分布，由三个单元组成，三个单元之间，岩石矿物学、地球化学成分作有规律性地变化，这种变化与圈层结构变化相适应。构造岩浆演化具有同源性，连续性、脉动性；岩体上升侵位方式为具有多次脉动性的复式气球膨胀体；在空间上与金、铀关系密切，但为成金仅提供热源，而为成铀既提供物源，又提供热源。Spatially, the Zhongchuan Granite occurs as concentric rings and consists of three units in whichthe petrology, mineralogy and geochemistry change regularly. It reveals some features about tectono-magmatism as well as magmatic emplacement model. The tectono-magmatic evolution is characterized by consanguinity, continuity and pulsation. The way of Zhongchuan granite emplacement is affiliated to the bolloon-expansion model, by which the granite body underwent the multiple pulsation and repeated expansion. Spatially, the intrusion is closely related with the mineralization of An and U. and supplies An mineralization withthermal source and U mineralization with both material and thermal source.

关 键 词：花岗岩 同心环状 成矿作用 构造岩浆演化 

分 类 号：P588.121[天文地球—岩石学] P588.11[天文地球—地质学]