甘肃白银厂细碧岩岩石学特征和成因的初步研究

来源期刊：中南大学学报(自然科学版)1982年第4期

论文作者：陈亚东

文章页码：150 - 156

关键词：细碧岩； 岩石学特征； 钠长石； 甘肃白银； 区域变质作用； 石英角斑岩； 基性斜长石； 有序度； 初步研究； 白银厂

摘    要：本文以各种实际资料,说明白银厂细碧岩是岩浆结晶作用、自变质交代作用、区域变质作用先后相继、综合作用而形成的。

Abstract: A detailed study has been made on the spilites of low Palaeozoic group,Baiyinchang, Gansu Province. The emphasis is laid on the albites andoligoclases in spilites. A new conclusion about the genesis of the spilites inthis district, which differs from those of previous research workers,is proposed. The new conclusion is as follows: the formation of spilitesin Baiyinchang is not the result of a single geological process, but the result ofmultistage evolution, i. e., first, primary albites and oligoclases were crystal-lized from the magma, followed by intensive autometasomation and finallyregional metamorphism exerted certain influence on them.