摘要
对含铁石英砂岩进行非等静压高温高压实验，结果显示，在块状固体样中发生了化学反应，而在粉末样中却没有发生相应的化学反应。这种现象无法从实验条件方面来解释，只能从变形机制方面来解释．由粒内变形而导致的剪切应力在化学反应中起着重要作用。并以此为基础，对剪切应力在地壳岩石天然变质反应中的作用进行了总结和探讨。
Using the ferrous quartzose sandstone as sample, a series of nonhydrostatic high TP experiments are carried by the author. The results show that,chemical reaction only takes place in the solid massive samples, not in the powder samples, though their conditions are not so different. This kind of behavour is related witthe deformation mechanism of the samples in experiment, and the shear stress induced by intragranular deformation plays an important role in chemical reaction of rock. Based on the experiment results, the role of shear stress in natural metamorphic reaction of rock in the earth crust is discussed in the paper.
关键词
含铁石英砂岩
非等静压
高压实验
化学反应
ferrous quartzose sandstone
nonhydrostatic pressure
high T P experiment
chemical reaction
shear stress
metamorphic reaction
