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康定杂岩特征及成因浅析

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摘要 康定杂岩处于西南扬子地台西缘,以斜长角闪岩、变粒岩、花岗岩、闪长岩、基性脉岩等为主。经历了新太古代至古元古代的基底形成、新元古代的岩浆活动(主体形成于860Ma^750Ma)、中生代印支-燕山期的岩浆活动以及新生代喜山期的岩浆活动四个阶段,具有结晶基底和褶皱基底双层基底特征,本文认为康定杂岩为变质-岩浆杂岩混合体,是元古宙以来持续的岩浆活动在区域变质和深熔作用以及变形后的产物。康定杂岩形成与活动大陆边缘的岛弧环境密切相关。
作者 张志军
出处 《西部资源》 2020年第5期37-39,共3页 Western Resources
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