摘要
本文对郯庐断裂带南段主干断裂典型的韧性剪切带进行了系统的剖析。从糜棱岩塑性变形的亚颗粒化、动态重结晶和矿物成分特征及岩石组分迁移变化等入手进行系统的研究工作，计算了岩石形成的温度、压力和流动应力和流变速率参数；模拟计算了岩石在剪切变形作用下的体积亏损及组分迁移的量值。
The paper focuses on the mylonites in the ductile shear zones in the southern part of Tancheng Lujiang fault zone. A number of mineral compositions in the rocks were analysed by EPMA and some typical samples by chemical and atomic absorption methods. Based on the comprehensive study on the characteristics of the plastic deformation , sub grains, dynamic recrystalization, mineral assemblages and the changes of chemical compositions of minerals and bulk rocks from the mylonites and their wall rocks,the parameters of temperature and flow stress and strain rate of the rocks were calculated. The authors have also discussed the coupling relationships between the flow stress volume loss composition changes and the relationships between the deformation and metamorphism during the mylonitization of the ductile shear zones in this region.
出处
《岩石学报》
SCIE
CAS
CSCD
北大核心
1996年第4期573-588,共16页
Acta Petrologica Sinica
关键词
糜棱岩
变形条件
组分迁移系
剪切带
郯庐断裂
Ductile shear zones
Mylonites
Flow stress
Volume loss
Composition migration
Southern Tancheng Lujiang fault zone
