大兴安岭北部中生代花岗岩类地球化学特征及地质意义  

GEOCHEMISTRY OF MESOZOIC GRANITOIDS IN NORTHERN DAXINGANLING MOUNTAINS:Geological Implication

作　　者：刘希瑶 王德力 刘驰[3] LIU Xi-yao;WANG De-li;LIU Chi(Liaoning Institute of Geology and Mineral Survey Co.,Ltd.,Shenyang 110032,China;Inner Mongolia No.115 Institute of Geological and Mineral Exploration and Development,Ulanhot 137405,Inner Mongolia,China;Shenyang Center of China Geological Survey,Shenyang 110034,China)

机构地区：[1]辽宁省地质矿产调查院有限责任公司,辽宁沈阳110032 [2]内蒙古自治区115地质矿产勘查开发院,内蒙古乌兰浩特137405 [3]中国地质调查局沈阳地质调查中心,辽宁沈阳110034

出　　处：《地质与资源》2020年第3期207-211,281,共6页Geology and Resources

基　　金：中国地质调查局项目“内蒙古1∶20万小二沟幅区域化探”(项目编号200014200010).

摘　　要：依据在大兴安岭北部开展的1∶20万水系沉积物地球化学调查项目所采集的岩石样品的元素分析测试结果,对中生代花岗岩类39种元素含量进行了统计,分析了元素的地球化学特征,提出了大兴安岭北部中生代花岗岩类元素的丰度值.认为大兴安岭北部中生代花岗岩类具有富钾酸性花岗岩和富铝中酸性花岗岩两种地球化学类型的特征,这些特征与中生代构造运动和岩浆活动关系密切.Based on the elemental analysis results of rock samples collected by the 1∶200000 stream sediment geochemical survey in northern Daxinganling Mountains,the paper counts the contents of 39 elements in the Mesozoic granitoids,analyzes the geochemical characteristics of elements,and presents the abundance values of elements in the Mesozoic granitoids of northern Daxinganling Mountains.It is concluded that the Mesozoic granitoids have the characteristics of potassium-rich acid granites and aluminium-rich acid-intermediate granites,which are closely related to the Mesozoic tectonic movement and magmatic activity.

关 键 词：元素丰度值 地球化学特征 中生代花岗岩类 大兴安岭 

分 类 号：P588.12[天文地球—岩石学] P595[天文地球—地质学]