地质论评2013，Vol.59Issue(4)：731-746,16.
阿尔金—祁连—昆仑造山带早古生代构造格架及结晶岩年代学研究进展
Progress of Studies on Early Paleozoic Tectonic Framework and Crystalline Rock Geochronology in Altun—Qilian—Kunlun Orogen
摘要
Abstract
The Early Paleozoic--Caledonian tectonic event of Altun--Qilian--Kunlun orogen has been always the research hotspot at home and abroad.Plenty of research results were published in these years.This paper mainly investigated the geochemical characteristics of the important components of the tectonic melange zones,such as the ophiolites,magmatic rocks and HP--UHP metamorphic rocks,especially the results of the isotopic geochronology.The geochemical characteristics show that the ophiolites have two types,MORB and OIB,whether the ophiolites developed in the mature ocean,small ocean basin,or fore-arc/back-arc basin remains controversial today.According to plenty of isotopic geochronological data,the Proto-Tethys in Altun--Qilian--Kunlun area developed into mature-ocean stage in Cambrian,started to subduct in Middle--Late Ordovician,and became to the post-collision and extension environment in Late Silurian Epoch--Early Devonian Epoch.Furthermore,the North Altun and the North Qilian,the South Alun and the North Qaidam,the West Kunlun and the East Kunlun were the same tectonic belt in Early Paleozoic,respectively,which were fractured by the Cenozoic Altun Tagh strike-slip falut.关键词
阿尔金山/祁连山/昆仑山/造山带/早古生代/蛇绿岩/年代学Key words
Altun orogen / Qilian orogen / Kunlun orogen/ Early Paleozoic / ophiolite / geochronology引用本文复制引用
董顺利,李忠,高剑,朱炼..阿尔金—祁连—昆仑造山带早古生代构造格架及结晶岩年代学研究进展[J].地质论评,2013,59(4):731-746,16.基金项目
本文为国家自然科学基金项目(批准号:41172096)与国家重大专项(编号:2011ZX05008-003)的成果. （批准号:41172096）
