华东地质2026，Vol.47Issue(2)：203-220,中插1-中插23,41.DOI:10.16788/j.hddz.32-1865/P.2024.12.014
蒙古—鄂霍茨克洋晚古生代构造演化
Late Paleozoic tectonic evolution of the Mongolian-Okhotsk Ocean
摘要
Abstract
The Central Asian Orogenic Belt(CAOB)is a region characterized by the superimposition of multiple tectonic systems.Although extensive research has been conducted on the CAOB,there is still consider-able debate regarding the correlation between different blocks with Precambrian crystalline basements in the east-ern segment of the CAOB,as well as the history of the southward subduction of the Mongol-Okhotsk Ocean.This study compares and analyzes the basement composition,Late Paleozoic magmatism,and sedimentation of the Ereendavaa Block in Eastern Mongolia,the Erguna Block in Northeastern China,and the Mamyn Block in the Russian Far East,all of which are located in the eastern segment of the CAOB.The study suggests that the Ergu-na Block should be spatially correlated with the Ereendavaa and Mamyn Blocks,forming the Ereendavaa-Ergu-na-Mamyn Block chain(EEMB).By systematically summarizing and analyzing the geochronological and geo-chemical data of Late Paleozoic arc-related magmatic rocks from these tectonic units and the ophiolites within the Mongol-Okhotsk suture zone,the study proposes that the southward subduction of the Mongol-Okhotsk Ocean initiated during the Late Carboniferous.关键词
中亚造山带东段/蒙古—鄂霍茨克洋/蛇绿岩/晚古生代岩浆岩/晚石炭世Key words
Eastern Central Asian Orogenic Belt/Mongolian-Okhotsk Ocean/ophiolite/Late Paleozoic magmatic rocks/Late Carboniferous分类
天文与地球科学引用本文复制引用
周桐,刘永江,关庆彬,刘勃然,李锦孜,魏江峰,陈昭旭,Peskov A.Yu..蒙古—鄂霍茨克洋晚古生代构造演化[J].华东地质,2026,47(2):203-220,中插1-中插23,41.基金项目
国家自然科学基金"东北地区山弯构造研究(编号:42130305)"和泰山学者(编号:No.ts20190918)项目联合资助. （编号:42130305）
