Depositional processes and particle characteristics on fans in the Southern Alps, New Zealand

Auteurs :
DE SCALLY, F.A.
OWENS, L.F.

Description :
Characteristics of surface particles on 4 fans dominated by different depositional processes are investigated in the sedimentary ranges of the Aoraki-Mount Cook area. Statistical testing shows that on 3 of the fans all indices of particle size and roundness differ significantly according to the depositional process : snow avalanches produce the largest and most angular particles, streamflows the smallest and most rounded, with debris flows in between. On the fourth fan affected by all of these depositional processes, particle size and roundness indicate that snow avalanches are presently dominant with streamflow playing a secondary role.


Type de document :
Article de périodique

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 2005, vol. 69, n°. 1-4, p. 46-56, nombre de pages : 11, Collation : Illustration, Références bibliographiques : 56 ref.

Date :
2005

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier