古地理学报2011，Vol.13Issue(6)：657-664,8.
柴达木盆地西南缘更新统震积岩特征及其意义
Characteristics and significance of seismites in the Pleistocene in southwestern margin of Qaidam Basin
摘要
Abstract
A great deal of soft-sediment deformation structures with seismite characteristic were found in the lacustrine strata of the Pleistocene in the southwestern margin of Qaidam Basin. Soft-sediment deform ation markers mainly include liquefied sandstone ( mudstone) vein, liquefied breccia, load structure, ball-pillow structure, liquefied convolute deformation structure etc., and the syn-seismic structure deforma tion markers were also developed including large-scale syn-seismic fault, seismic fissure, syn-fold. The discovery of seismites in the southwestern Qaidam Basin indicates that tectonic movements were frequent and intense since the Pleistocene along the northern margin of the Kunlun Mountain and in the Qaidam Basin. The seismites made it possible to study the tectonic activities since the Pleistocene which has important sig nificance for the study of the Qinghai-Tibet Plateau, basin-mountain coupling and paleo-earthquakes.关键词
震积岩/柴达木盆地/更新统/古地震Key words
seismite/ Qaidam Basin/ Pleistocene/ palaeoearthquake分类
天文与地球科学引用本文复制引用
朱萌,李德威,刘德民,朱云海,罗文行,秦雅东..柴达木盆地西南缘更新统震积岩特征及其意义[J].古地理学报,2011,13(6):657-664,8.基金项目
中石油东方公司项目“柴西南—东昆仑地区区域构造研究”(编号:2010016303)、中国地调局青海1:5万中灶火地区四幅区调项目(编号:1212010918021)与教育部长江三峡库区地质灾害研究中心开放基金项目(编号:TGRC201005)共同资助 （编号:2010016303）
