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混杂体(Melange)是由板块俯冲过程中所导致的各种构造作用而混杂形成的一些杂乱地质体。它的主要特征是大小不同的各类岩块嵌在比较塑性,遭到强烈剪切作用和破碎作用的基质中,每一混杂体都包括基质(matrix)、外来岩块(exotic block)和原地岩块(native block)三部分。根据其中含有时代新于基质的外来岩块和基质的强烈剪切变形而区别于沉积成因的滑塌体(Olistostrome),又可根据基质的塑性形变和外来成分岩块的普遍出现而区别于一般构造产物(破碎岩、构造角砾岩等)。它们经
Melange is a kind of cluttered geological body formed by various tectonic actions caused by subduction of plate. Its main feature is that all types of rock masses of different sizes are embedded in a relatively malleable, strongly malleable and crushed matrix, each of which includes a matrix, exotic blocks, Rock block (native block) in three parts. The Olistostrome, which is distinguished from the depositional genesis, is characterized by the intense shear deformation of exotic rock blocks and matrices that contain new epochs from the matrix and can be distinguished from the general appearance of plastic deformation of the matrix and exotic occurrences of rock mass Tectonic products (crushed rocks, structural breccias, etc.). They are