摘要
温泉花岗岩体是西秦岭地区一个极具典型研究意义的复杂成因岩体和具有潜力的成矿(钼矿床)岩体。通过1∶25万天水市幅区城地质调查,初步获得一些新认识:在岩体北部古坡乡-铁炉坡乡一带新发现一套蛇绿岩组合;岩体的岩石类型复杂,为一多期次侵入的复式岩体;岩体中发育大量包体,显示了岩浆混合作用的存在;另外,岩体中还发现较大体积的古老片麻岩包体和工业钼矿床。岩体主体获得259Ma的锆石U-Pb年龄。
The Wenguan granite body is a complex related to molybdenum mineralization in western Qinling.Geology survey shows that the granite complex was formed by several intrusions of magma with the main intrusion age to be 259 Ma(zircon UPb age) and a great deal of inclusions(including preSinian gneiss) have been found,showing the features of magma mixing.
出处
《华南地质与矿产》
CAS
2003年第3期8-11,共4页
Geology and Mineral Resources of South China
基金
中国地质调查局地质调查项目(20001300010171).
关键词
温泉花岗岩体
岩体时代
钼矿床
西秦岭
Wenquan granite
granite body age
molybdenum deposit
western Qinling
