黑龙江科技大学学报2024，Vol.34Issue(2)：237-243,7.DOI:10.3969/j.issn.2095-7262.2024.02.011
建边农场地区早石炭世侵入岩年代学及构造环境
Chronology and tectonic environment of early Carboniferous intrusive rocks in Jianbian farm area
摘要
Abstract
This paper aims to study the closing of Paleo-Asian Ocean and the metallogenic geologic setting at Middle and late Hualian age.The study using the methods of petrogeochemistry and chronolo-gy,investigates the petrogeochemical and chronological characteristics behind the early Carboniferous intrusive rocks and the tectonic environme in Jianbian farm area.The results show that a group of good zir-con ages of(330.3±2.1)Ma is obtained from the monzonite granite in eastern part of Xiangbishantun,whose diagenesis age is early Carboniferous epoch.The petrogeochemistry manifests the chemical compo-sition of aluminum-weakly saturated,calc-alkaline series,and the genetic type I on the granites in this stage.The magmatic rocks in this stage demonstrates great significance to the study of the closure of the Paleo-Asian Ocean and the metallogenic geologic setting in the middle and late Hualian stage,which be-long to the products of the transition process from collision subduction to backward orogenesis on Xing'an Block and Songnen Block in the process of convergence and extrusion from the north to the east.关键词
建边农场地区/锆石U-Pb年龄/构造环境/花岗岩Key words
Jianbian farm area/Zircon U-Pb/tectonic environment/granite分类
天文与地球科学引用本文复制引用
杨贺平,石国明,徐东海,姜海洋..建边农场地区早石炭世侵入岩年代学及构造环境[J].黑龙江科技大学学报,2024,34(2):237-243,7.基金项目
中国地质调查局"大兴安岭成矿带北段地质矿产调查"项目(12120113053200) （12120113053200）
