岩石矿物学杂志2011，Vol.30Issue(4)：625-636,12.
大别山造山带的糜棱岩
Mylonites in the Dabie Mountain orogen
摘要
Abstract
Mylonites in the Dabie orogen are fault and shear zone related rocks formed under metamorphic conditions. They can be divided into greenschist, amphibolite, granulite, and eclogite facies mylonites. The main criterion for identifying the mylonites in the Dabie Mountain is the ductile (plastic) deformation of index minerals of the constituent metamorphic facies. This is clearly different from the former definition and description of my-lonite. Formation epoch of the mylonites in the Dabie Mountain was approximately the same as (or a little later than) that of peak metamorphism of their host rocks. From older to younger, the series follows the order eclogite facies mylonite→granulite facies mylonite→amphibolite facies mylonite→greenschist facies mylonite. According to lithology and texture, the mylonites can be further divided into second and third subclasses if necessary. Former mylonites of eclogite and granulite facies are always superimposed by the later facies and show the appearance of amphibolite or even greenschist facies mylonites; the earlier formed mylonites are thus preserved as relics in their retrograded products. Mylonites in the low-grade metamorphic rocks in southern and northern Dabie Mountain only experienced the metamorphic history of greenschist and amphibolite facies mylonitization during the Paleozoic-Triassic period.关键词
大别造山带/糜棱岩/变质相/韧性变形/简单剪切应变Key words
Dabie orogen/mylonite/metamorphic facies/ductile deformation/dynanmic recrystallization分类
天文与地球科学引用本文复制引用
徐树桐,吴维平,刘贻灿,陆益群,汪德华..大别山造山带的糜棱岩[J].岩石矿物学杂志,2011,30(4):625-636,12.基金项目
国家自然科学基金资助项目(40542012) （40542012）
国家“973”专题子项目(2003CB716500) （2003CB716500）
安徽省地质科学研究所大别山项目 （）
安徽省国土资源厅、安徽省地质矿产开发局基金匹配项目 （）
