黑龙江科技大学学报2024，Vol.34Issue(2)：263-269,7.DOI:10.3969/j.issn.2095-7262.2024.02.015
东昆仑造山带埃坑德勒斯特地区花岗闪长岩的地球化学特征
Geochemical characteristics of granodiorite in Aikengdelesite area in East Kunlun orogenic belt
王琳1
作者信息
- 1. 吉林省地质科学研究所,长春 130012
- 折叠
摘要
Abstract
This paper aims to explore the tectonic environment and dynamic background formed by the granodiorite in Aikengdelesite area of East Kunlun orogenic belt in Qinghai Province,and conducts the zircon U-Pb isotope analysis and the whole rock geochemical testing.The test results indicate that the weighted average age of the granodiorite is(232.4±1.9)Ma(MSWD =0.58),formed in Late Trias-sic.Geochemically;and they belong to the calcium-alkaline series,sub-aluminous granite,with A/CNK values ranging from 0.94 to 0.96,which is significantly enriched with large ion lithophile elements,but relatively depleted in high field strength elements.This rock mass is an I-type granite formed by partial melting of lower crustal rocks into primitive magmaseparated and crystallized;based on the regional tec-tonic background,the author believes that this granodiorite should be formed in the background of region-al post-collision extension,which also provides conditions for a large number of the Late Triassic ore de-posits in the East Kunlun region.关键词
花岗闪长岩/晚三叠世/地球化学/埃坑德勒斯特/东昆仑Key words
granodiorite/Late Triassic/geochemical/Aikengdelesite/East Kunlun分类
天文与地球科学引用本文复制引用
王琳..东昆仑造山带埃坑德勒斯特地区花岗闪长岩的地球化学特征[J].黑龙江科技大学学报,2024,34(2):263-269,7.
