地质与勘探2017，Vol.53Issue(4)：680-685,6.
东昆仑南坡埃坑北花岗斑岩的成岩年龄及其地质意义
Diagenetic Age of the Granite Porphyry in Northern Aikengdelesite South of East Kunlun and Geological Implications
摘要
Abstract
The granite porphyry in northern Aikengdelsite on the south slope of East Kunlun is located in the north mining area of Aikengdelsite copper-molybdenum ore belt,middle Aikengdelsite region,south of Babaotan,and north of Ma'erzheng,Nomuhong Town,Dulan County,Qinghai Province.In tectonic setting,it is in a back-arc foreland basin of Mesozoic with subduction-accretion complex behs on the southern slope of East Kunlun,as well as the south edge of the northern Paleo-Tethys active continental margin.It is also part of the generalized magma arc tectonic zone of East Kunlun.The porphyry mass is the surrounding rock of Aikengdelsite copper-molybdenum ores and mineralization mother rock.By LA-ICP-MS SHRIMP zircon U-Pb dating,the granitic porphyry mass has the diagenetics age of 242 ± 1.2Ma.It is inferred that the metallogenetic epoch of the porphyry-type copper-molybdenum ores is in Middle Triassic and early Late Triassic.This result will provide some guidance for geological exploration of porphyry-type copper-molybdenum ores in this area.关键词
成岩年龄/花岗斑岩/埃坑/东昆仑Key words
diagenetic age/granite porphyry/Aikengdelsite/East Kunlun分类
天文与地球科学引用本文复制引用
张雪亭,姚远,郑杰,湛守智,陈喜峰..东昆仑南坡埃坑北花岗斑岩的成岩年龄及其地质意义[J].地质与勘探,2017,53(4):680-685,6.基金项目
青海省国土资源厅地勘基金项目(编号QGTZG2011-18)资助. （编号QGTZG2011-18）
