两广交界地区花岗岩中包体的类型，特征与成因

据包体岩相学及矿物学研究，包体岩石为角闪岩相到麻粒岩相的副变质岩，岩石类型有麻粒岩，变粒岩，片麻岩和富云包体，角闪岩相包体形成的温度为633度，压力为460Mpa-550MPa，麻粒岩包体形成的温度为781－883度，压力为530MPa-710MPa，包体为部分熔融形成寄主花岗岩岩浆的源区岩石列余，其中大容－十万大山地区角闪岩相－ 麻粒岩相包体岩石为区域动热变质成因；云开大山地区麻粒岩包体岩石为热穹隆变质成因。

THE TYPES,FEATURES AND GENESIS OF ENCLAVES IN GRANI-TOIDS IN THE JUNCTION OF GUANGDONG AND GUANGXI

Based on the study of petrography and mineralogy, the enclaves in granitoids are parametamorphites of amphibolite facies and granulite facies, and the types of enclave rocks include hyperthene-granulite, geneiss, granulite and enclaves riched mica. The forming temperatures and pressures of amphibolite facies and granulite facies enclave rocks are 633℃, 460 MPa～550 MPa and 781～883℃, 530 MPa～710 MPa, respectively. The enclaves are remnants of rocks which partially melted to form granitoid magma. The genesis of enclave rocks of amphibolite facies and granulite facies in Darongshan and Shiwandashan regions is reginal dynamothermal metamorphism. In contrast, the genesis of enclave rocks of granulite facies in Yunkai region is thermal dome metamorphism.