摘要
宁镇,茅山山脉褶皱逆冲一推覆构造带的构造岩类型主要为碎裂岩系列,其次为糜棱岩系列。主要超微构造为位错构造。经计算,区内印支、燕山期古差应力值约为90~100MPa,应变速率为:3.1x10^(-14)≤(?)≤2.0x10^(-10)。构造变形环境为低温、高压、高应变速率环境,微观机制主要为位错滑移。
The main type of tectonites in the belts of fold thrust - nappes in Ningzhen, Maoshan mountains is the cataclasite series, and then mylonite series. The main ultramicrostructures are dislocations. Through calculations, the palaeo-differential stress value in Indo -Sinian and Yanshanian epoch was about 90 ~ 100 MPa, the strain rates were: 3.1 × 10^-14≤ε≤2.0 × 10^-10. The environment of the tectonic deformation was characterized by low temperature, high pressure and high strain rates. The micromechanism was mainly dislocation slipping.
出处
《现代地质》
CAS
CSCD
1991年第2期157-163,T001,共8页
Geoscience
关键词
褶皱
逆冲
推覆构造
变形环境
: fold thrust-nappe structure, the environment of deformation,palaeo-differential stress, strain rates, dislocation slipping
