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华夏型地台活化是世界上最广見的地台活化类型之一,它在东亚的中国地台东部和西伯利亚地台东部及南部都有發育,其主要特征是形成一系列小型的“活化地台凹地”,并有显著的岩浆活动。为了更明确地認識这一类型的地台活化現象,有必要就它的进行过程加以論述。 (一)进行过程的阶段划分:主要是根据中国地台各个活化区的研究結果,华夏型地台活化的进行过程,可以分为下列4个阶段: (1)初动期:地台活化开始,“拱曲作用”破坏了地台原有的平坦地形,并形成了一系列的线状隆起及介子其间的凹地——“活化地台凹地”。这样,侵蝕作用加强了,新的造岩条件出現了,使大量的岩石碎
Huaxia platform activation is one of the most widely used platform activation types in the world. It develops in eastern and southern Siberian platforms of East Asia and its main feature is the formation of a series of small “activated Concave ”and have significant magmatic activity. In order to understand this type of platform activation more clearly, it is necessary to discuss its process. (A) the stage of the process of division: mainly based on the results of the study of the various activation areas of the Chinese platform, Huaxia type platform activation process, can be divided into the following four stages: (1) Initial stage: platform activation The “arching effect” undermines the original flat terrain of the platform and forms a series of linear bulges and recesses between the meson - the “active platform”. In this way, the erosion is intensified, new rock formation conditions appear, and large amounts of rock are broken