The spatial distribution of loess and loess-like sediments in the montain areas of Central and high Asia

Eolian dynamics : landforms and processes

Äolische Dynamik : Formen und Prozesse

Auteurs :
LEHMKUHL, F.
BLÜMEL, W.D.

Description :
Results of observations and detailed profile studies of the distribution and compositions of loess and loess-like aeolian sediments in selected mountain areas of Central Asia are described. The accumulation of loess deposits in Central Asia is restricted to areas with steppe vegetation, low surface-wind speeds and a low percentage of surface sand. SEM-analyses of quartz-grain surfaces show aeolian transport and frost weathering in these cold-arid mountain environments. In several samples it is possible to determine which process (aeolian or cryogenic) was last to occur.


Type de document :
Congrès

Source :
Middle-European Conference on geomorphology, 2, Stuttgart, Allemagne, 1996-09-30, Zeitschrift für Geomorphologie. Supplementband, issn : 0044-2798, 1997, n°. 111, p. 97-116, Collation : Illustration, Références bibliographiques : 36 ref.

Date :
1997

Editeur :
Pays édition : Allemagne, Berlin ; Stuttgart, Borntraeger