喀雅克登塔格地区古元古代金水口变质侵入岩(体)的发现及其地质意义  

Discovery and Geological Significance of Metamorphic and Intrusive Rock (System) of Kayakedengtage Region Intruded Into Jinshuikou Paleo-proterozic Rock

作　　者：张金明[1] 王钦元[1] 许海全[1] 严玉峰[1] 

机构地区：[1]青海省地质调查院/青海省青藏高原北部地质过程与矿产资源重点实验室,青海西宁810012

出　　处：《西北地质》2012年第3期13-19,共7页Northwestern Geology

基　　金：中国地质调查局地质大调查项目(项目编号:1212010710321)

摘　　要：在喀雅克登塔格地区古元古代金水口群片麻岩、大理岩中,发现了一套变质侵入体。岩性为眼球状黑云二长片麻岩,经同位素年龄测定时代为新元古代,侵入体具有过铝钙碱性系列的特征,是同碰撞环境下岩浆作用产物。该套变质侵入岩的发现,对于东昆仑西段前震旦纪基底的深入研究及更进一步恢复和确定喀雅克登塔格构造岩浆带发展演化具有重要意义。Metamorphic intrusive rocks （bodies） into Jinshuikou rock group ot the Pateo-proterozic were found. The isotope age determination shows they are the Neo-Proterozoic. The metamorphic intrusive rocks （bodies） derived with aluminum calcalkaline series, and resulted from a tectonic environment of syn- chronous collision. The discovery of metamorphic intrusive rocks （rodies） has important significance to a thorough invest-tigation and study of Presinian period basement in the west of eastern Kunlun Mr. And it is of great significance to resume or confirm the developing and evolvement history of Qimantage tectono- magma belt.

关 键 词：变质侵入体 同碰撞环境 东昆仑 

分 类 号：P588.3[天文地球—岩石学]