摘要
中条山北段刘庄冶—胡家峪一带中条群中发育一条以篦子沟组为滑脱层的韧性滑脱剪切带。在该剪切带剪切变形过程中伴随发生了相应的变质作用。变形变质作用依次经历了三个发展阶段。早期阶段以低温高应变速率为特征,整个韧性滑脱剪切带均遭受了强烈的剪切变形和中高压型低绿片岩相的变质作用;高温变形阶段,在韧性滑脱剪切带的主界面及其附近发生以高绿片岩相为主、低角闪岩相局部的中压型变质作用;晚期阶段以稳态重结晶为特征,仅在韧性滑脱剪切带主界面形成了低压型低角闪岩相的变质作用。
There is a ductile decollement shear zone, which takes the Bizigou Formation as the decollement layer of the zone, in the Zhongtiao Group of Liuzhuangye—Hujiayu area,north segment of the Zhongtiao Mountains. The shear deformation of the zone was accompanied metamorphism which can be divided into 3 stages. The early stage is characterized by low temperature—high strain speed, underwent a strong shear deformation and metamorphism of medium—high pressure low greenshist facies. The metamorphism of the high temperature stage is indicated chiefly by high greenshist facies which occurs on the main boundary planes of the zone and its neighbourhood and then by low amphibolite facies which is usually recognized as the product of medium pressure metamorphism. The late stage is characterized by recrystallization in a stable enviroument. The metamorphism of low pressure type of low amphibolite facies only occurs on the main boundary planes of the zone.
