Premium
The stratified slope deposits at Kunlunshan Pass, Tibet Plateau, China
Author(s) -
Gengnian Liu,
Zhijiu Cui,
Daokai Ge,
Yongqiu Wu
Publication year - 1999
Publication title -
permafrost and periglacial processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.867
H-Index - 76
eISSN - 1099-1530
pISSN - 1045-6740
DOI - 10.1002/(sici)1099-1530(199910/12)10:4<369::aid-ppp331>3.0.co;2-3
Subject(s) - geology , silt , geomorphology , loess , sedimentary rock , glacial period , plateau (mathematics) , mineralogy , geochemistry , mathematical analysis , mathematics
Stratified slope deposits occur at the foot of east‐ or south‐east‐facing slopes at an altitude of 4100 m near Xiaonanchuan. The deposits show three layers: the base layer is regolith of thickness 2–3 m, the middle layer is stratified slope deposit of thickness 10–15 m, and the top layer is loess‐like silt of thickness 9 m. Analysis of the sedimentary structure and grain size, together with SEM study of the quartz grains and TL datings, suggest the stratified slope deposits represent a climate change from cold–wet to cold–dry in the early period of the Last Glaciation (60,000–44,000 a BP ). The loess‐like deposit resting upon the stratified slope deposit indicates a remarkable cold–dry period since the Last Glacial Maximum. Copyright © 1999 John Wiley & Sons, Ltd.