新疆东昆仑库木艾比热孜一带晋宁期变质侵入岩(体)地球化学特征及构造环境

GEOCHEMICAL CHARACTERISTICS AND TECTONIC SIGNIFICANCE OF JINNINGIAN METAMORPHIC INTRUSIVE ROCK OF KUMABBYHZ AREAS IN EAST KUNLUN

库木艾比热孜地区解体出晋宁期变质侵入岩(体),侵位于古元古界白沙河岩组和蓟县系狼牙山组,同位素年龄样测定结果表明,时代为新元古代,岩浆成因为上地壳来源,是新元古代造山带后碰撞环境产物.探讨该期次变质岩(体)地球化学特征及构造环境,对于东昆仑库木艾比热孜一带前震旦纪基底的深入研究及进一步恢复确定祁漫塔格构造岩浆带发展演化史具重要意义.

Disintegration of Jinningian metamorphic intrusive rock of Kumabbyhz region, invaded the ancient Paleoproterozoic Bai Shahe Formation and Jixian system Lang yashan Formation, this paper based on isotope results of sample, confirmed its era is Neoproterozoic, and magma result from the upper crust, it is the production of late collision of Neoproterozoic orogen environment. Discussed geochemical characteristics of this period intrusive rocks, there is great significance for further study of early Sinian basement of Kumabbyhz areas in east Kunlun and restore and establish Qimantage tectonic magma development and evolution history.