CAJ | 학술논문

通过对地表出露变质岩、深部地震测深资料和高温高压岩石波速测试资料的综合分析，研究了云南地壳和上地幔岩石组成。结果表明，云南上、中、下地壳分别由绿片岩相(顶部为沉积层)、角闪岩相和麻粒岩相变质岩组成或分别由与之相当的花岗岩类、闪长岩类、辉长岩类组成，部分地区地壳底部有镁铁质榴辉岩存在。上地幔由橄榄岩组成，部分地区(兰坪思茅坳陷和滇中坳陷)壳幔过渡带可能由镁铁质榴辉岩和橄榄岩组成。
통과대지표출로변질암、심부지진측심자료화고온고압암석파속측시자료적종합분석，연구료운남지각화상지만암석조성。결과표명，운남상、중、하지각분별유록편암상(정부위침적층)、각섬암상화마립암상변질암조성혹분별유여지상당적화강암류、섬장암류、휘장암류조성，부분지구지각저부유미철질류휘암존재。상지만유감람암조성，부분지구(란평사모요함화전중요함)각만과도대가능유미철질류휘암화감람암조성。
Through the comprehensive studies of the metamorphic rocksoutcropping on the su rface, DSS data, and experimental data of rock seismic velocity under high temp erature and high pressure, the rock constituents of the crust and upper mantle for Yunnan Province have been studied. This research indicates that the upper, mi ddle and lower crust in Yunnan is composed of the metamorphic rocks of greenschi st (sedimentary layer in the top part), amphibolite and granulite facies, respec tively or granitoids, diorites and gabbros corresponding to them respectively, and that there exist the mafic eclogites in the bottom of the crust in some areas ; and that the upper mantle is composed of peridotites and the crust-upper mantle transitional zone probably composed of the mafic eclogites and peridotites in some areas such as Lanping-Simao depression and Central Yunnan depression.