柴达木盆地北部新生代构造运动及其对盐湖演化的影响

Cenozoic Tectonic Movements of the North Qaidam Basin and Their Effects on the Evolution of Salt Lakes 

中文关键词:  柴达木盆地  新生代构造运动  棋盘格式构造  盐湖演化

英文关键词::Qaidam Basin  Cenozoic tectonic movement  Tectonic lineament  Evolution of salt lake

中文摘要:

      新生代以来,印度板块与青藏高原发生了强烈的碰撞,由此而产生的远程效应导致柴达木盆地北缘的阿尔金山脉晚古近纪以后发生了强烈的走滑,并导致盆内构造形式发生了一系列变化。在前人对盆地构造运动、古地磁、古地理及岩石地球化学研究结果的基础上,提出了上新世以来在NE和近NS向共同挤压作用的影响下,盆地内部棋盘格式不均匀隆升控制了柴达木盆地北部湖盆的形成,对后期盐湖沉积产生了重要影响。

英文摘要:

      :Since the Cenozoic,the violent collision between the India Plate and Qinghai-Xizang Plateau had occurred.The remote effect resulted from the collision caused the strong strike-slip of Altyn Mountain located to north Qaidam Basin since late Paleogene.The collision also resulted in a series of variations of tectonic styles in the basin.Based on previous studying results of tectonic movement, paleomagnetics, paleography and lithological geochemistry,a hypothesis was put forward.The hypothesis proposed that under the influences of NE-trending and near NS-trending coextrusion, the intrabasin uneven uplifts with a tectonic lineament controlled the formation of the lake basins in north Qaidam Basin and exerted an important effect to late sedimentation of salt lake.