大别山五庙超高压变质岩的变形构造

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逆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Ｄ１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Ｄ２。

Deformational Structure of Ultrahigh-Pressure Metamorphic Rocks in Wumiao,Dabie Mountains

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.