新疆库鲁克塔格地区辛格尔变质核杂岩特征

QINGGIR METAMORPHOSED NUCLEUSCOMPLEXES IN KURUKTAG AREA OF XINJIANG

辛格尔一带的前震旦纪古老变质岩系为一系列的变质核杂岩。其内核由早—中太古代古陆核组成 ,外核为晚太古代、古元古代、中元古代、新元古代早期变质岩系构成的多层次构造增生楔 ,并有多期剥离断层配套。新元古宙代晚期震旦系为盖层。它是地壳多期伸缩构造的产物。变质核杂岩体是一个有利于成矿的构造体系。

The pre- Sinian metamorphosed rocks in the Qinggir area consist of a series of metamorphosed nuclues complexes.Its inner core is composed of Early- Middle Archean paleo- continental nuclues,and its outer core composed of metamorphosed rocks of L ate Archean,paleo- Proterozoic,meso- Proterozoic and ear- ly Neo- Proterozoic which form multi- layered tectonic accretionary prisms,accompanied by multi- phase desquamation faults.The Sinian of the neo- Proterozoic forms the cover.The metamorphosed nuclues com- plexes resulted from multi- phase extension- compression of the crust,which are favorable for the mineraliza- tion.Qinggir metamorphosed nucleus complexes structure is also favorable for the mineralization.