地质通报Issue(9)：1326-1332,7.
内蒙古莫力达瓦旗哈达阳绿泥石白云母构造片岩LA-ICP-MS锆石U-Pb年龄及其地质意义
LA-ICP-MS zircon U-Pb age of the chlorite-muscovite tec-tonic schist in Hadayang, Morin Dawa Banner, Inner Mongolia, and its tectonic significance
摘要
Abstract
Located at the junction of Songnen massif with Xingan massif, the Nenjiang-Heihe tectonic belt has long been the focus of geologist's attention. During the field work in Nenjiang area, the authors found a new suite of strata whose deformation and meta-morphism are greatly different from those of surrounding geological bodies. Rocks exhibit such combinations as chlorite-muscovite tectonic schist, biotite-muscovite microlite schist and zoisite-muscovite mylonite schist. Geochronological research was conducted on chlorite-muscovite tectonic schist, which yielded a zircon U-Pb(LA-ICP-MS) age of 413.9Ma±2.7Ma. Based on the analysis of regional geological evolution history and geological characteristics of different ages, the authors hold that there is an tectonic mélange belt along Hongshanliang-Hadayang-Yikette area. This suite of strongly deformed rocks should be part of the tectonic melange belt, and the original rock was formed in the Early Devonian. The late structural location was related to the collage effect of Nenjiang-Heihe tectonic belt which occurred in late Early Carboniferous period.关键词
哈达阳/白云母构造片岩/LA-ICP-MS锆石U-Pb年龄/嫩江黑河构造带/早泥盆世Key words
Hadayang/chlorite-muscovite tectonic schist/LA-ICP-MS zircon U-Pb age/Nenjiang-Heihe tectonic belt/Early Devonian分类
天文与地球科学引用本文复制引用
那福超,付俊彧,汪岩,杨帆,张广宇,刘英才,康庄..内蒙古莫力达瓦旗哈达阳绿泥石白云母构造片岩LA-ICP-MS锆石U-Pb年龄及其地质意义[J].地质通报,2014,(9):1326-1332,7.基金项目
中国地质调查局项目 （）
