Geomorphological classification and landscape evolution in a sector of Sierras Australes, Buenos Aires Province

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The main geomorphological features of a sector of Sierras Australes (Buenos Aires province) are described. Fluvial processes (mainly formation of alluvial fans), mass wasting (creep and debrisflows) and wind action (deflation and acumulation) are responsible for the configuration of the landscape of...

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Autor principal: Pereyra, F.X.
Formato: JOUR
Materias:
Cainozoic
geomorphological classification
landform evolution
planation surface
Argentina, Buenos Aires Province, Sierras Australes
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v51_n3_p248_Pereyra
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00044822_v51_n3_p248_Pereyra
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spelling todo:paper_00044822_v51_n3_p248_Pereyra2023-10-03T13:57:16Z Geomorphological classification and landscape evolution in a sector of Sierras Australes, Buenos Aires Province Pereyra, F.X. Cainozoic geomorphological classification landform evolution planation surface Argentina, Buenos Aires Province, Sierras Australes The main geomorphological features of a sector of Sierras Australes (Buenos Aires province) are described. Fluvial processes (mainly formation of alluvial fans), mass wasting (creep and debrisflows) and wind action (deflation and acumulation) are responsible for the configuration of the landscape of the region. At least three alluvial acumulation events and equal number of loess deposition were recognized for the late Cenozoic times. The development of a planation surface of pre-Cenozoic age, and developed in Palaeozoic rocks, is postulated. This surface and the piedmont acumulations were affected by erosional events related to tectonic, climatic and eustatic events (Andean Orogeny and glaciations). Six major geomorphological units are recognized. Today the pedogenetic processes predominate whereas morphodynamic ones are low. Fil:Pereyra, F.X. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v51_n3_p248_Pereyra
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cainozoic
geomorphological classification
landform evolution
planation surface
Argentina, Buenos Aires Province, Sierras Australes
spellingShingle Cainozoic
geomorphological classification
landform evolution
planation surface
Argentina, Buenos Aires Province, Sierras Australes
Pereyra, F.X.
Geomorphological classification and landscape evolution in a sector of Sierras Australes, Buenos Aires Province
topic_facet Cainozoic
geomorphological classification
landform evolution
planation surface
Argentina, Buenos Aires Province, Sierras Australes
description The main geomorphological features of a sector of Sierras Australes (Buenos Aires province) are described. Fluvial processes (mainly formation of alluvial fans), mass wasting (creep and debrisflows) and wind action (deflation and acumulation) are responsible for the configuration of the landscape of the region. At least three alluvial acumulation events and equal number of loess deposition were recognized for the late Cenozoic times. The development of a planation surface of pre-Cenozoic age, and developed in Palaeozoic rocks, is postulated. This surface and the piedmont acumulations were affected by erosional events related to tectonic, climatic and eustatic events (Andean Orogeny and glaciations). Six major geomorphological units are recognized. Today the pedogenetic processes predominate whereas morphodynamic ones are low.
format JOUR
author Pereyra, F.X.
author_facet Pereyra, F.X.
author_sort Pereyra, F.X.
title Geomorphological classification and landscape evolution in a sector of Sierras Australes, Buenos Aires Province
title_short Geomorphological classification and landscape evolution in a sector of Sierras Australes, Buenos Aires Province
title_full Geomorphological classification and landscape evolution in a sector of Sierras Australes, Buenos Aires Province
title_fullStr Geomorphological classification and landscape evolution in a sector of Sierras Australes, Buenos Aires Province
title_full_unstemmed Geomorphological classification and landscape evolution in a sector of Sierras Australes, Buenos Aires Province
title_sort geomorphological classification and landscape evolution in a sector of sierras australes, buenos aires province
url http://hdl.handle.net/20.500.12110/paper_00044822_v51_n3_p248_Pereyra
work_keys_str_mv AT pereyrafx geomorphologicalclassificationandlandscapeevolutioninasectorofsierrasaustralesbuenosairesprovince
_version_ 1782025625553338368

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