糜棱岩及其与其它区域变质岩的区别MYLONITES AND THEIR DISTINCTION FROM OTHER REGIONAL METAMORPHIC ROCKS
徐树桐
摘要(Abstract):
糜棱岩形成于深部,以柔性变形为主或多或少保留脆性变形残迹,这是由于物性的不同,也是由于变形的塑性阶段的应变硬化造成的,一些高应变率的产物也可以生成于蠕变造成的糜棱岩中,因为积累于强烈变形带中的能量都有缓慢释放和突然释放过程的交替。在所提出的糜棱岩定义中,作者将变形行为作为糜棱岩的主要标志。按照这个定义,可以从区域变质岩和混合岩中分出一些新的糜棱岩类型。文中提出了一个便于野外应用的包括糜棱岩在内的断层岩分类表。在此分类中,形成于深部和浅部的断层岩有完全对应的结构。
关键词(KeyWords):
基金项目(Foundation):
作者(Author): 徐树桐
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