摘要
玉河寨基性─超基性环状杂岩体的岩相学及地球化学资料表明，属同源岩浆演化的产物，岩浆演化为基性─→超基性的反序岩浆演化。这种反序岩浆演化的机制主要是由于斜长石在高位岩浆房中的分离结晶所致。对流分离作用可能是斜长石晶体从熔融体中分离的方式。在此基础上，笔者提出了该岩体的成因模式。
The Yuhezhai basic-ultrabasic ring-like complex rock body is formed by a cognate magma anti-order evolution from the basic to the ultrabasic according to the lithology and petrochemistry of it.The mechanism of this anti-order magmatic evolution is mainly caused by the separate crystallization of plagioclase in a high-level magma chamber.The convection separation might be the separation way of plagiocalse crystal from the melt mass. On this basis,the genetic model of this rock body is put forward in this paper.
出处
《云南地质》
1995年第3期231-237,共7页
Yunnan Geology
