混合岩建造的大地构造类型及其对比  

The tectonic types of migmatite formation and their contrast

作　　者：尹意求[1] 

机构地区：[1]桂林矿产地质研究院,广西桂林541004

出　　处：《桂林工学院学报》2001年第1期52-57,共6页Journal of Guilin University of Technology

基　　金：国家重点黄金地质科技攻关项目! (90 0 5 1- 0 5 (0 1) - 0 6 )资助

摘　　要：混合岩建造按其形成的不同大地构造环境 ,可划分为 2个大地构造类型 :地洼型混合岩建造和地台型混合岩建造。地洼型混合岩建造具有独特的大地构造属性 ,明显不同于地槽型混合岩建造 ,这主要表现在 :( 1 )产出于后地台块断造山带的大地构造环境 ,限于规模较大的线性断裂带之内 ;( 2 )具有独特的由变质岩 -混合岩 -花岗岩呈三位一体的组合建造系列 ,在混合岩中存在高温低压相系的矿物组合。The migmatite formations are devided into the geosyncline type migmatite formation and the Diwa type migmatite formation from the tectonic setting.The Diwa type migmatite formation posesses an independent tectonic property. It is obviously different in the two aspects from the geosyncline type migmatite formatin. (1)It was formed in the tectonic setting of the Diwa block-faulting orogenic belt after platform, and restricted to the big linear fault zone. (2)There is a distinctive association formation series that was three in one formed by the metamorphic rock, the migmatite and the granite, and there is a mineral association of the facies series of the high temperature and the low pressure in the migmatite.

关 键 词：混合岩建筑 地洼型 地槽型 鉴别标志 大地构造环境 

分 类 号：P588.36[天文地球—岩石学] P547[天文地球—地质学]