%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Niviere, B.
%A Messager, G.
%A Carretier, Sébastien
%A Lacan, P.
%T Geomorphic expression of the southern Central Andes forebulge (37 degrees S, Argentina)
%D 2013
%L fdi:010061231
%G ENG
%J Terra Nova
%@ 0954-4879
%K ANDES ; ARGENTINE
%M ISI:000324406600003
%N 5
%P 361-367
%R 10.1111/ter.12044
%U https://www.documentation.ird.fr/hor/fdi:010061231
%> https://www.documentation.ird.fr/intranet/publi/2013/11/010061231.pdf
%V 25
%W Horizon (IRD)
%X Abstract We present a geomorphologic analysis of an east-west transect located east of the southern Andes of Argentina (~37 degrees S). We observe a succession of zones that underwent erosion and deposition during the Pleistocene. If the proximal Andean foothills are incised, a proximal depozone receives sediments feeding the megafan of the Rio Colorado on the Chadileuvu plain. More distally, the abandoned palaeo-valleys and bending of the valley floors reflect a localized uplift. Further to the east, another depozone corresponds to the Pampa Deprimida lowland. This pattern is consistent with the presence of a classical flexural geometry of the lithosphere. The distal uplift of the foreland corresponds in terms of location, length (150 km) and amplitude (240 m) to the Andean forebulge modelled by a geophysical approach. In this study, we identify the morphological imprint of this bulge and show its effect on the fluvial activity.
%$ 064