四姑娘山花岗岩侵位与山脉隆升  

Emplacement of the Siguniangshan Granite Rock Mass and Uplift of the Siguniang Peak

作　　者：张宽忠[1] 李振江[1] 黄成[1] 

机构地区：[1]四川省地矿局区域地质调查队,四川双流610213

出　　处：《四川地质学报》2009年第S2期99-102,共4页Acta Geologica Sichuan

基　　金：中国地质调查局项目"1:25万炉霍幅;马尔康幅区域地质调查"(项目编号:1212010510304)

摘　　要：四姑娘山位于龙门山与邛崃山的接合部位,是青藏高原东南缘邛崃山脉的主峰,其主体由侏罗纪淡色花岗岩构成。本文应用锆石激光探针U-Pb、单矿物(角闪石、黑云母)K-Ar同位素测年、磷灰石裂变径迹测年等手段,对四姑娘山花岗岩进行了年代学研究,利用磷灰石径迹年龄-地形高差法和径迹年龄外推法定量探讨了四姑娘山的隆升幅度和速率。Siguniang Peak as the highest peak of the Qionglai Mountains on the southeastern margin of the Qinghai-Tibet Plateau lies in the intersection of the Longmen Mountains and the Qionglai Mountains.It consists mainly of the Jurassic leucogranite.SHRIMP dating for zircon,K-Ar isotope dating for amphibole and biotite and fission-track dating for apatite are used for studying geochronology of the Siguniangshan granite rock mass.This paper deals with amplitude and rate of uplift of the Siguniang Peak by means of fission-track age for apatite-height deviation method and fission-track age extrapolation.

关 键 词：四姑娘山 淡色花岗岩 年代学 裂变径迹 隆升幅度和速率 

分 类 号：P542[天文地球—构造地质学]