摘要
作者首次研究了浅变质细碎屑岩中韧性剪切带变形构造岩的特征，并进行构造岩类型划分；同时，对该类型构造岩与典型长英质糜棱岩的特征进行了对比分析；而后在构造岩岩石组构及综合研究基础上提出：这种构造岩的变形机制以粒间滑动为主，伴有细粒化，它们成生于地壳５—８ｋｍ的较浅层位和较低的温度、压力条件下。
In this paper, the author first studied characteristics of tectonite of ductile shear deformation in the epimetamorphic microclastic rocks, and made classification of tectonite. Then, the difference of this tectonite from typical felsic mylonite was elaborated. Based on petrofabric characteristics and comprehensive analysis, the author holds that the deformation mechanism of tectonite was mainly intergranular movement and partly intragranular deformation, and that it occurred in the superzone of the crust at the depth of 5-8 km under the conditions of lower pressure and lower temperature.
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
1998年第1期30-34,共5页
Acta Petrologica et Mineralogica
基金
地矿部定向研究项目
关键词
碎屑岩
变质细碎屑岩
韧性剪切变形
构造岩
classification of tectonite
ductile shear deformation
epimetamorphic microclastic rock
