冈底斯山中段措勤地区中新生代花岗岩就位机制及构造环境探讨  

On Emplacement Mechanism and Tectonic Setting for the Mesozoic-Cenozoic Granitoids Rockmasses in the Coqên Region,Middle Gangdisê Mountains

作　　者：江元生[1] 徐天德[1] 赵友年[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103-111,共9页Acta Geologica Sichuan

基　　金：1:25万西藏措勤幅区域地质调查项目(基金项目编号:20001300009261)

摘　　要：冈底斯中段花岗岩分别形成于白垩纪和古近纪始新世,它详细记录了冈底斯岩浆弧的形成与演化。本文通过对花岗岩岩体空间形态、接触面及接触带构造变形特征、岩体内部组构、侵入体组合模式等方面的详细解剖,探讨了花岗岩类的构造样式、就位机制、构造环境、岩体的形成深度和剥蚀深度。Granitoids rockmasses in the Middle Gangdisê Mountains were emplaced in Cretaceous and Eocene,recording in detail formation and evolution of the Gangdisê magmatic arc.This paper make an approach to their tectonic style,emplacement mechanism,tectonic setting,rock-forming depth and denudation depth in terms of spatial shape,tectonic deformation of contact plane and contact zone,rock fabric and instruction association of the granite rockmasses.

关 键 词：白垩纪花岗岩 古近纪花岗岩 就位机制 造环境 剥蚀深度 措勤 

分 类 号：P588.121[天文地球—岩石学]