论文部分内容阅读
造山作用以及由此引发的气候变化可形成两类河流系统,一是垂直于造山带流动的横向河流, 二是平行于造山带流动的纵向河流,它们分别将沉积物卸载于前陆盆地和侧陆盆地中.侧陆盆地不仅 比前陆盆地演化历史长,而且可保存较完整的沉积记录.新生代发源于青藏高原的河流以纵向河流为 主,由此形成了一系列侧陆盆地.位于祁连山东、西两侧的兰州盆地和疏勒河冲积扇的演化与青藏高原 新生代隆升、构造变形以及气候演化是耦合的.造山作用和侧陆盆地沉积之间的耦合关系也广泛发生在 前新生代,其中以秦岭造山带与松潘-甘孜三叠纪深海复理石侧陆盆地之间的耦合最具特色.造山带、 侧陆盆地以及将两者联系在一起的纵向河流间的耦合关系是大陆动力学过程的一个重要环节.
The orogeny and the resulting climate change can lead to two types of river systems: one is a vertical stream flowing perpendicular to the orogenic belt, and the other is a longitudinal stream running parallel to the orogenic belt that unloads the sediment into the foreland basin and the side In the continental basin, the continental basin not only has a longer history of evolution than the foreland basin, but also can preserve more complete sedimentary records.The Cenozoic rivers originating from the Qinghai-Tibet Plateau are dominated by longitudinal rivers, forming a series of side-basins. The evolution of alluvial fan in the Lanzhou and Shulehe basins on both east and west of the Qilian Mountains is coupled with the uplift of the Cenozoic, tectonic deformation and climate evolution of the Qinghai-Tibet Plateau. The coupling between orogenies and sedimentation in the side-continents also occurred extensively Pre-Cenozoic, of which the coupling between the Qinling orogenic belt and the Songpan-Garze Triassic deep-sea flysch-side continental basin is the most characteristic.The orogenic belt, the side-continent basin, and the coupling between the longitudinal rivers that link the two Relationships are an important part of the continental dynamics process.