西北地质2018，Vol.51Issue(2)：1-8,8.
东昆仑祁漫塔格地区白垩纪基性岩墙的发现及其意义
Lithogeochemical Characteristics of Cretaceous Basic Dyke Swarm from Qimantag Region in East Kunlun and Its Geological Significance
摘要
Abstract
The firstly discovered diabase dykes swarm in Qimantag region of East Kunlun has high TiO2 (1.65％～2.87％) and alkali (2.98％～5.32％) contents,belonging to alkalic basalt series.LA-MC-ICP-MS zircon U-Pb dating of diabase dyke (porphyrite) has obtained an age of 102 Ma,while its Sm-Nd isochron age is (120±8.3) Ma.Therefore,it's confirmed that the early Cretaceous diabase dike is existed in Qimantag region,East Kunlun,and the area had entered the intracontinental extension stage in early Cretaceous.关键词
东昆仑祁漫塔格/白垩纪/基性岩墙Key words
Qimantag region in East Kunlun/Cretaceous/basic dyke swarm分类
天文与地球科学引用本文复制引用
赵洪菊,拜永山,刘春娥,贾小龙,张海龙,陈健..东昆仑祁漫塔格地区白垩纪基性岩墙的发现及其意义[J].西北地质,2018,51(2):1-8,8.基金项目
中国地质调查局国土资源大调查“1∶25万库郎米其提幅地质调查项目成果”(200113000058),中国地质调查局国土资源大调查“青海1∶5万滩北雪峰地区四幅区调项目成果”(1212010781056) （200113000058）
