CAJ | 학술논문

东昆仑西段祁漫塔格地区总体研究程度较低，前人年代学资料报道亦少，且主要属于印支期之前。本文在巴音郭勒地区花岗岩类样品中获得了系列锆石裂变径迹年龄数据，不仅为本地区地质研究提供了裂变径迹年代学资料，而且揭示了所经历的多期构造活动。锆石裂变径迹年龄变化在201～109 M a之间，具有201、185、164～163和139～109 M a年龄组。这些年龄很好地体现了地区内所经历的两次挤压和两次伸展构造活动，其中年龄201和139～109 M a是羌塘地体和冈底斯地体，先后于中-晚三叠世和晚侏罗世-早白垩世时期分别向北俯冲并与其北侧地块相互碰撞-汇聚-拼合的体现；而年龄185 M a和164～163 M a则分别与早侏罗世和中侏罗世区内造山后伸展事件有关。
동곤륜서단기만탑격지구총체연구정도교저，전인년대학자료보도역소，차주요속우인지기지전。본문재파음곽륵지구화강암류양품중획득료계렬고석렬변경적년령수거，불부위본지구지질연구제공료렬변경적년대학자료，이차게시료소경력적다기구조활동。고석렬변경적년령변화재201～109 M a지간，구유201、185、164～163화139～109 M a년령조。저사년령흔호지체현료지구내소경력적량차제압화량차신전구조활동，기중년령201화139～109 M a시강당지체화강저사지체，선후우중-만삼첩세화만주라세-조백성세시기분별향북부충병여기북측지괴상호팽당-회취-병합적체현；이년령185 M a화164～163 M a칙분별여조주라세화중주라세구내조산후신전사건유관。
By now fewer research works have been done in Qimantage area ,western section of Eastern Kunlun Mountains .A little published dating data fell into Indosinian period .A series of zircon fission track ages from granitoid samples were achieved and multiphase tectonic-magmatic activities were revealed in this paper .The zircon fission track age range from 201 Ma to 109 Ma might be divided into four groups ,i .e .201 Ma , 185 Ma ,164-163 Ma and 139-109 Ma .These ages indicate two compressional and two stretching tectonic activities . The 201 Ma and 139-109 Ma ages present northward subductions of Qiangtang Terrane and Gangdise Terrane in Middle -Later Triassic and Late Jurassic respectively ,resulting in collision-convergences with north-side terranes . The ages of 185 Ma and 164-163 Ma reflect post-orogenic stretching events in Early Jurassic and Late Jurassic ,respectively .