Source-to-sink system in the south bank of Qinghai Lake

• DOI: 10.1190/int-2017-0005.1
• Publication Date: 2017-10-31T05:41:06Z
• Authors: Wenmao Xu; Zaixing Jiang; Ji Chen; Chao Liu; Lingyu Dong
• Keywords: Sink (geography); Alluvial fan; Denudation

In the south bank of Qinghai Lake, numerous alluvial fans and coastal deposits have been formed. terms their developmental positions relationships, denudation system, depositional transportation system consist source-to-sink systems. Based on field-investigation evidence literature survey, it was confirmed that processes these “source-to-sink” systems can be divided into three stages: Early-Late Pleistocene stage, from 39 to 23 ka BP; Late Pleistocene-Early Holocene 10.7 modern stage. At present time, stages still identified as levels lake shore terraces. Pleistocene, indicates level high, supply clasts sufficient, fan deltas had formed, lakeside plain continued develop. end with sudden changes in global climate, climate dry cold, fell. this showed relatively low, reduced, distance longer; ancient sediments started recycle system. Until times, Lake only rarely developed, is primarily derived recirculation paleo-shore sediments. Meanwhile, a large amount sandy gravel beaches developed along shore. By studying multistage around lakes, characteristics basins are enriched provide an important analogy for researches basins.