Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Titre : The Quebrada de Purmamarca, Juyuj, NW-Argentina : Landscape Evolution and Morphodynamics in the Semi-Arid Andes

Auteur : May, Jan-Hendrik

Université de soutenance : Universität Würzburg

Grade : Doctor of Philosophy (PhD) 2002

Descriptif
This study aims at reconstructing landscape evolution in the Quebrada de Purmamarca, NW-Argentina. Thorough mapping of the existing landforms and present morphodynamic situation was conducted on the base of intensive field work and the interpretation of remote sensing imagery. Aside from geomorphological mapping, field work focused on the description of numerous sedimentological and pedological profiles. The analysis of these profiles was supported by laboratory data from field samples (granulometry, CaCO3 content) but also by a 14C age date. With particular regard to pedological questions, several samples from soil crust were micromorphologically analysed and interpreted. The resulting data allowed the reconstruction of several phases of landscape evolution in the Quebrada de Purmamarca back to the Miocene.

Mots Clés : Quartär , Anden , Geomorphologie , Geomorphologische Kartierung , Paläoklima , Südamerika

Présentation

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