Entrainment of glaciomarine sediments and formation of thrust-block moraines at the margin of Sørsdale Glacier, East Antarctica

Auteur(s) et Affiliation(s)



Description :
The morphology, sedimentology and structure of moraines at the margin of an outlet glacier in east Antarctica are described, and contemporary depositional processes in a marine inlet adjacent to the ice margin are examined. Results indicate that the principal moraines are thrust-block moraines produced by basal freezing and deformation of glaciomarine sediment as the outlet glacier expands into a marine inlet. A model of thrust-block moraine development produced by this study provides a framework for the interpretation of radiocarbon dates from marine macrofossils in the moraines.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 1997, vol. 22, n°. 2, p. 175-187, Collation : Illustration, Références bibliographiques : 25 ref.

Date :
1997

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley