青海黄河贵德段河流阶地及新构造运动研究  

STUDY ON THE TERRACES AND NEOTECTONICS OF THE YELLOW RIVER IN GUIDE AREA,QINGHAI PROVINCE

作　　者：苗琦[1] 李丽松[1] 钱方[2] 赵志中[2] 

机构地区：[1]中国煤炭地质总局,北京100039 [2]中国地质科学院地质力学研究所,北京100081

出　　处：《地质与资源》2012年第5期493-496,共4页Geology and Resources

基　　金：青海省贵德县国家地质公园项目办资助

摘　　要：贵德盆地作为青藏高原东北部的一个构造地貌单元,盆地中河流阶地发育,但是阶地的形成时代仍存在很大争议.选择阶地作为研究对象,并从龙羊峡至松坝峡共采集阶地样品10个,进行ESR测年,对测试结果进行了分析研究,建立了T0—T4阶地的海拔、河拔高度序列,分析了贵德盆地新构造运动规律具有间歇性、差异性、不对称性特征.The Guide Basin, a tectonic landform unit in the northeast Qinghai-Tibet Plateau, is well developed with river terraces. However, much controversy still exists regarding the age of the river terraces. By testing and analyzing the ESR age data of 10 samples from the river terraces in Guide Basin from Longyang Gorge to Songba Gorge, it is preliminarily concluded that the uplift of the Yellow River Basin in Guide area is characterized by intermittence, multi-period heterogeneity and asymmetry.

关 键 词：河流阶地 构造隆升 黄河发育 贵德盆地 青海省 

分 类 号：P546[天文地球—构造地质学]