华北地质2023，Vol.46Issue(4)：10-21,12.DOI:10.19948/j.12-1471/P.2023.04.02
南蒙古地区晚古生代岩浆岩的地球化学特征
Geochemical characteristics of Late Paleozoic magmatic rocks in southern Mongolia
摘要
Abstract
The late Paleozoic Variscan orogenic belt in southern Mongolia plays an important role in the Central Asia orogenic belt,but the formation time of the collision has been controversial due to various factors.In this paper,the geochemical characteristics of the late Paleozoic magmatic rocks in southern Mongolia are preliminarily summarized by collecting and using the previous geochemical data.It is suggested that island arc began to form in Devonian in this area,and island arc was still dominant in Early Carboniferous,but continental margin arc appeared,while intraplate magmatism was more typical in Late Carboniferous.At this time,island arc magmatism related to subduction in southern Mongolia basically stopped and turned into intraplate tectonic stage,and the intraplate characteristics were more obvious in Permian,at this time,volcanic activity had stopped,which was related to the formation of Central Asia.The mountain belt is related to the stage of amalgamation,which is the intraplate tectonic environment.So this paper can provide some meaningful references for the late Paleozoic tectonic evolution framework in southern Mongolia.关键词
岩浆岩/地球化学/晚古生代/南蒙古地区Key words
Magmatic rocks/geochemistry/Late Paleozoic/southern Mongolia分类
天文与地球科学引用本文复制引用
席宏,李俊建,李华明,付超,党智财,唐文龙..南蒙古地区晚古生代岩浆岩的地球化学特征[J].华北地质,2023,46(4):10-21,12.基金项目
国家重点研发计划政府间国际科技创新合作重点专项"蒙古晚古生代岩浆活动与铜(金钼银)成矿作用"(2022YFE0119900) （金钼银）
中国地质调查局项目"中蒙边界重要成矿带1∶100万成矿规律图编制与研究"(1212010561510) （1212010561510）
"中蒙边界地区重要成矿带成矿规律对比研究"(1212011120330) （1212011120330）
"华北地区区域成矿规律研究与总结"(DD20221695-30) （DD20221695-30）
科技部国际科技合作项目"蒙古东方省铅锌多金属资源潜力评价"(2012DFB20220) （2012DFB20220）
