青海柴西北缘大通沟南山—打柴沟—三岔口地区岩体特征及形成环境分析  

An Analysis of Rock Mass Characteristics and Formation Environment in Nanshan-Tachaigou-Sanchakou area of Datonggou,Northwestern Margin of Qinghai

作　　者：王春涛 张新远[1,2] 陈丽娟 WANG Chuntao;ZHANG Xinyuan;CHEN Lijuan(Key Laboratory of Geological Processes and Minereal Resources of Northern Qing-Tibetan,Qinghai Province,Xining,Qinghai 810012,China;Qinghai Institute of Geological Survey,Xining,Qinghai 810012,China)

机构地区：[1]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 [2]青海省地质调查院,青海西宁810012

出　　处：《中国锰业》2018年第5期74-77,81,共5页China Manganese Industry

基　　金：全国地质构造区划与区域地质调查综合集成项目([2014]01-026-071)

摘　　要：青海柴西北缘大通沟南山—打柴沟—三岔口地区一带岩浆活动强烈,侵入岩分布广泛,笔者通过工作中对该区侵入岩采集同位素测年分析研究,综合认为岩石是俯冲环境下的岛弧花岗岩,岩性为ηγ+πηγ+δο+γδο+γδ+ν。对该区岩体特征及形成环境进行了分析探讨。The magmatic activity in Nanshan-Jachuigou-Sanchakou area of Datonggou, located in northwestern margin of Qinghai, is strong. The intrusive rocks are widely distributed. The authors studied the isotope dating of the intrusive rocks in the area in work to conclude that the rock is under the subduction environment. The island arc granite has lithology of ηγ＋πηγ＋δο＋γδο＋γδ＋υ. The rock mass characteristics and formation environment of this area were analyzed and discussed.

关 键 词：大通沟南山-打柴沟-三岔口地区 岩体特征 形成环境 

分 类 号：P597.3[天文地球—地球化学]