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对与构造密集带内深部逆冲断层有关的变质晕所作的构造和成分分析证明,逆冲断层作用对变质过程的影响有如下表现:产生同期的逆向变质分带热晕;在发生叠加区域变质作用时控制逆冲断层带内流体的P-T条件。蛇绿岩质和硅铝质外来岩体下方逆向变质分带热晕的构造和成分特征以及理论模拟和试验模拟资料表明,产生该类变质作用的热源只有一个,即力学性质的热,并且与外来岩体的类型无关。当构造密集带受到叠加区域变质作用时,由于流经狭窄推覆“面”的流体压力下降。该推覆面的局部压力可能会下降。
The tectonism and compositional analysis of the metamorphic haloes related to the deep thrust faults in the intensive belt show that the effects of the thrust faults on the metamorphic processes are as follows: the formation of reverse metamorphic zone thermal halo during the same period; PT control of fluid in thrust zone during operation. The tectonic and compositional features of the reverse metamorphic zonation halo beneath the ophiolite and alluvial alluvial rocks, as well as theoretical modeling and experimental simulation data show that there is only one source of heat for this type of metamorphism, namely, the thermal properties of mechanics, The type of alluvial rock has nothing to do. When structured dense belts are subject to metamorphism in the superimposed area, the pressure of the fluid flowing through the narrow nappe “face” decreases. Local pressure on the nip may decrease.