Eogene Surface Texture of Quartz Sand and Paleoclimatic Change in Northern Margin of Tibetan Plateau
详细信息
- 责任者：Song Chunhui （College of Resources and Environment ; Lanzhou University ; Lanzhou 730000 ; China） ; Meng Qingquan
- 刊名：Acta Sedimentologica Sinica
- 出版年：2009
- 卷期：27(1)
- 关键词：石英砂 ; quartz sand ; 古环境 ; paleoenvironment ; 青藏高原 ; Qinghai-Tibetan Plateau
- 页码：p.94-103
- 图表：3 illus., 1 table, 43 refs.
- 分类号：0803
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
The start time of the Asian interior aridification and East Asian monsoon is a research hotspot. The quartz sand grains which are taken from the Eogene red sandstones in the northern margin of Tibet Plateau were examined under Electronic Scanning Microscope for their external morphological characteristics in the paper. The result shows that the samples almost have the texture of subaqueous polished surface and V-shape impact pits which is the typical feature of hydraulic action, and it is obviously different with the quartz sands from modern sand dunes of Taklimakan and northern margin of