The aeolian system of central Argentina

The central region of Argentina comprises three main geomorphological domains, the Pampean plain, the northern Patagonia plateau and the eastern Andean piedmont. The region characterized by a complex morphostructural setting is covered by a late Quaternary aeolian apron with subordinate alluvial dep...

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Detalles Bibliográficos
Autores principales: Zárate, M.A., Tripaldi, A.
Formato: JOUR
Materias:
Andean piedmont
Argentina
Dunes
Loess
Pampas
Patagonia
dune field
eolian process
geomorphology
loess
piedmont
structural geology
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_18759637_v3_n4_p401_Zarate
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_18759637_v3_n4_p401_Zarate
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spelling todo:paper_18759637_v3_n4_p401_Zarate2023-10-03T16:34:15Z The aeolian system of central Argentina Zárate, M.A. Tripaldi, A. Andean piedmont Argentina Dunes Loess Pampas Patagonia dune field eolian process geomorphology loess piedmont structural geology Argentina Pampas Patagonia The central region of Argentina comprises three main geomorphological domains, the Pampean plain, the northern Patagonia plateau and the eastern Andean piedmont. The region characterized by a complex morphostructural setting is covered by a late Quaternary aeolian apron with subordinate alluvial deposits, grading from loess and loess-like deposits in the eastern Pampas to sandy mantles and dunefields in the central, western and southern areas of the region. Eight aeolian units have been identified on the basis of the nature of the deposits, landforms and their geological-structural settings. Loess and loess-like mantles are the dominant aeolian facies of three units extending across the eastern Pampean plain: loess and loess-like mantles, loess and loess-like mantles and blowouts, sandy loess and loessial sand mantles. Dunefields and sand mantles prevail in five other units: central Pampean dunefields, western Pampean sand mantles and dunefields, western Pampean dunefields, Andean piedmont dunefields, northern Patagonia and southern Pampean sand mantles and dunefields. At a regional scale, sandy deposits are proximal facies closer to the main source area of aeolian material corresponding to the floodplain environment of the Colorado River and its tributary Desaguadero-Salado-Curacó fluvial system. The eastern loess deposits correspond to distal aeolian facies. In addition, topography governed by the complex subsurface geology and structure of the region, play a leading role as a primary controlling factor in the distribution of aeolian facies and the resulting landforms. © 2011. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_18759637_v3_n4_p401_Zarate
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Andean piedmont
Argentina
Dunes
Loess
Pampas
Patagonia
dune field
eolian process
geomorphology
loess
piedmont
structural geology
Argentina
Pampas
Patagonia
spellingShingle Andean piedmont
Argentina
Dunes
Loess
Pampas
Patagonia
dune field
eolian process
geomorphology
loess
piedmont
structural geology
Argentina
Pampas
Patagonia
Zárate, M.A.
Tripaldi, A.
The aeolian system of central Argentina
topic_facet Andean piedmont
Argentina
Dunes
Loess
Pampas
Patagonia
dune field
eolian process
geomorphology
loess
piedmont
structural geology
Argentina
Pampas
Patagonia
description The central region of Argentina comprises three main geomorphological domains, the Pampean plain, the northern Patagonia plateau and the eastern Andean piedmont. The region characterized by a complex morphostructural setting is covered by a late Quaternary aeolian apron with subordinate alluvial deposits, grading from loess and loess-like deposits in the eastern Pampas to sandy mantles and dunefields in the central, western and southern areas of the region. Eight aeolian units have been identified on the basis of the nature of the deposits, landforms and their geological-structural settings. Loess and loess-like mantles are the dominant aeolian facies of three units extending across the eastern Pampean plain: loess and loess-like mantles, loess and loess-like mantles and blowouts, sandy loess and loessial sand mantles. Dunefields and sand mantles prevail in five other units: central Pampean dunefields, western Pampean sand mantles and dunefields, western Pampean dunefields, Andean piedmont dunefields, northern Patagonia and southern Pampean sand mantles and dunefields. At a regional scale, sandy deposits are proximal facies closer to the main source area of aeolian material corresponding to the floodplain environment of the Colorado River and its tributary Desaguadero-Salado-Curacó fluvial system. The eastern loess deposits correspond to distal aeolian facies. In addition, topography governed by the complex subsurface geology and structure of the region, play a leading role as a primary controlling factor in the distribution of aeolian facies and the resulting landforms. © 2011.
format JOUR
author Zárate, M.A.
Tripaldi, A.
author_facet Zárate, M.A.
Tripaldi, A.
author_sort Zárate, M.A.
title The aeolian system of central Argentina
title_short The aeolian system of central Argentina
title_full The aeolian system of central Argentina
title_fullStr The aeolian system of central Argentina
title_full_unstemmed The aeolian system of central Argentina
title_sort aeolian system of central argentina
url http://hdl.handle.net/20.500.12110/paper_18759637_v3_n4_p401_Zarate
work_keys_str_mv AT zaratema theaeoliansystemofcentralargentina
AT tripaldia theaeoliansystemofcentralargentina
AT zaratema aeoliansystemofcentralargentina
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