Zoigê Basin Loess Origin in the Northeast Tibet Plateau
SHENG Hai-yang
Abstract：Loess origin of Zoigê basin has been discussed based on synthetic study in grain compositions of the loess, surface texture of quartz sand, as well as other geological phenomena. On the probability cumulative curve of loess, saltation mass and suspension are obvious, and the latter is dominant. Matrix method is adopted to compute grain size of the loess. The statistic analysis on quartz sand surface textures of loess through scanning electron microscope shows the features of air transportation, developed dishing pit, and combined profile features of Aeolian environment. In addition, sporo-pollens are scarce in the loess ment in the periglacial environment, the age of loess formation mainly are Chazhenliangzi loess of Malan period and Suokezang Temple loess of Lishi period.
Keywords：Zoigê basimloessgrainquartz grain sizesporopollenstratigraphyTibet plateau.
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：13( 62-74 )