藏南吉隆地区聂拉木群的研究

构造－岩层（石）－事件法填图结果表明，吉隆地区原聂拉木群实际上包含了变质地层和变质深成岩，应予以解体。解体后的变质深成岩称思马片麻岩，侵位于晋宁期。变质地层称聂拉木岩群，包括曲乡岩组和江东岩组，两者以韧性断层接触，沉积时代为古元古代，经历了吕梁末期的中压型蓝晶石－十字石亚相区域动力热流变质作用，并与思马片麻岩－同于晋宁末期接受角闪岩相变质、喜马拉雅期绿片相退变质。

New progress in the study of the Nyalam Group in the Gyirong area, southern Tibet

The results of mapping by the structure-strata(rock)-event method indicate that the original Nyalam Group in the Gyirong area,southern Tibet,actually includes meta morphic strata and metamorphic plutonic rocks and should be integrated.The in tegrated meta morphic plu tonic rocks are called the Sima gneiss,which was emplaced in the Jin ningian Stage;whereas the metamorphic strata are called the Nyalam Group-complex,in cluding the Quxam and Jiangdong Formation-com plexes.They are in ductile fault contact with each other and were deposited in the Paleoprotero zoic.Both underwent medium-pressure kyan ite -staurolite subfacies regional dynamothermal metamorphism in the terminal Luliangian Stage and were subjected to amphibolite facies meta morphism in the terminal Jinningian Stage and greenstone facies retro grade metamorphism in the Himalayan Stage together with the Sima gneiss.