摘要
含柯石英榴辉岩、高压片麻岩的五庙超高压变质岩与外围低压片麻岩以边冲断层呈构造侵位关系,而在其内部榴辉岩与高压片麻岩为非构造接触,并且发育有榴辉岩相静态重结晶构造以及在纯剪应力状态下的前角闪岩相变形构造D_1和在顶端指向NNW运动的单剪应力状态下的角闪岩相变形构造D_2。
Ultrahigh-pressure metamorphic (UHPM) rocks in Wumiao of the Dabie Mountains consist of coesite-bearing eclogite and high-pressure (HP) gneisses. They show discordant contacts withtheir country rocks--low-pressure (LP) gneisses along thrust fault, while within the UHPMslab the coesite-bearing eclogites are structuraly concordant with 'in situ' HP gneisses and there are developed eclogitic facies deformational structure D1 in the pure shear strain state and amphi-bolitic facies deformational structure D2 with a NNW shear sense in a simple shear strain state.
出处
《地质论评》
CAS
CSCD
北大核心
1998年第3期249-254,T001,共7页
Geological Review
基金
国家自然科学基金
国家教委博士点基金
关键词
大别山
五庙
超高压变质岩
变形构造
变质岩
Dabie Mountains
Wumiao
ultrahigh-pressure metamorphic (UHPM) rock
deformational structure
