On the formations of the Pampas in the footsteps of Darwin: South of the Salado

Mostrar todas las versiones(3)

In 1833 during his journey across the Buenos Aires Pampas, Charles Darwin made observations that reflected his thoughts on two major landscape units, Pampa interserrana and Pampa deprimida, later identified by other authors. Darwin grouped the Pampean sediments into a single unit, the Pampean Format...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Zárate, M., Folguera, A.
Formato:	Artículo publishedVersion
Lenguaje:	Español
Publicado:	2009
Materias:	Buenos aires Calcrete Charles darwin Geomorphology Pampean sediments calcrete fluvial deposit geomorphology homogeneity landscape Miocene morphostructure Pliocene sedimentary sequence sedimentation stratigraphy Argentina Buenos Aires [Argentina] Pampas South America Mollusca Vertebrata
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p124_Zarate
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paperaa:paper_00044822_v64_n1_p124_Zarate
record_format	dspace
spelling	paperaa:paper_00044822_v64_n1_p124_Zarate2023-06-12T16:40:18Z On the formations of the Pampas in the footsteps of Darwin: South of the Salado Rev. Asoc. Geol. Argent. 2009;64(1):124-136 Zárate, M. Folguera, A. Buenos aires Calcrete Charles darwin Geomorphology Pampean sediments calcrete fluvial deposit geomorphology homogeneity landscape Miocene morphostructure Pliocene sedimentary sequence sedimentation stratigraphy Argentina Buenos Aires [Argentina] Pampas South America Mollusca Vertebrata In 1833 during his journey across the Buenos Aires Pampas, Charles Darwin made observations that reflected his thoughts on two major landscape units, Pampa interserrana and Pampa deprimida, later identified by other authors. Darwin grouped the Pampean sediments into a single unit, the Pampean Formation, based upon the lithological homogeneity and the large extension of the deposits; the unit was thought to be of estuarine-marine origin and attributed to the Recent Epoch considering the paleontological content (vertebrates and mollusks). At present, the Pampean sedimentary succession, which accumulated approximately during the last 11-12 Ma, is interpreted as a pedosedimentary sequence due to the ubiquity of pedogenetic features throughout the deposits. Four main subcycles of sedimentation are identified related to reactivations of the Pampean landscape. At a regional scale, the outcrop distribution of Pampean sediments of different ages suggests the dominance of more stable conditions since the late Miocene-Pliocene in a vast area of Pampa interserrana, documented by the formation of calcretes. However, sedimentation during the late Pliocene-Pleistocene was active within the domain of the Salado tectonic basin and Sierras de Tandil. The regional disparity shown by the Pampean stratigraphic record reveals the major morphostructural differences of its basement. Fil:Folguera, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf spa info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p124_Zarate
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language	Español
orig_language_str_mv	spa
topic	Buenos aires Calcrete Charles darwin Geomorphology Pampean sediments calcrete fluvial deposit geomorphology homogeneity landscape Miocene morphostructure Pliocene sedimentary sequence sedimentation stratigraphy Argentina Buenos Aires [Argentina] Pampas South America Mollusca Vertebrata
spellingShingle	Buenos aires Calcrete Charles darwin Geomorphology Pampean sediments calcrete fluvial deposit geomorphology homogeneity landscape Miocene morphostructure Pliocene sedimentary sequence sedimentation stratigraphy Argentina Buenos Aires [Argentina] Pampas South America Mollusca Vertebrata Zárate, M. Folguera, A. On the formations of the Pampas in the footsteps of Darwin: South of the Salado
topic_facet	Buenos aires Calcrete Charles darwin Geomorphology Pampean sediments calcrete fluvial deposit geomorphology homogeneity landscape Miocene morphostructure Pliocene sedimentary sequence sedimentation stratigraphy Argentina Buenos Aires [Argentina] Pampas South America Mollusca Vertebrata
description	In 1833 during his journey across the Buenos Aires Pampas, Charles Darwin made observations that reflected his thoughts on two major landscape units, Pampa interserrana and Pampa deprimida, later identified by other authors. Darwin grouped the Pampean sediments into a single unit, the Pampean Formation, based upon the lithological homogeneity and the large extension of the deposits; the unit was thought to be of estuarine-marine origin and attributed to the Recent Epoch considering the paleontological content (vertebrates and mollusks). At present, the Pampean sedimentary succession, which accumulated approximately during the last 11-12 Ma, is interpreted as a pedosedimentary sequence due to the ubiquity of pedogenetic features throughout the deposits. Four main subcycles of sedimentation are identified related to reactivations of the Pampean landscape. At a regional scale, the outcrop distribution of Pampean sediments of different ages suggests the dominance of more stable conditions since the late Miocene-Pliocene in a vast area of Pampa interserrana, documented by the formation of calcretes. However, sedimentation during the late Pliocene-Pleistocene was active within the domain of the Salado tectonic basin and Sierras de Tandil. The regional disparity shown by the Pampean stratigraphic record reveals the major morphostructural differences of its basement.
format	Artículo Artículo publishedVersion
author	Zárate, M. Folguera, A.
author_facet	Zárate, M. Folguera, A.
author_sort	Zárate, M.
title	On the formations of the Pampas in the footsteps of Darwin: South of the Salado
title_short	On the formations of the Pampas in the footsteps of Darwin: South of the Salado
title_full	On the formations of the Pampas in the footsteps of Darwin: South of the Salado
title_fullStr	On the formations of the Pampas in the footsteps of Darwin: South of the Salado
title_full_unstemmed	On the formations of the Pampas in the footsteps of Darwin: South of the Salado
title_sort	on the formations of the pampas in the footsteps of darwin: south of the salado
publishDate	2009
url	http://hdl.handle.net/20.500.12110/paper_00044822_v64_n1_p124_Zarate
work_keys_str_mv	AT zaratem ontheformationsofthepampasinthefootstepsofdarwinsouthofthesalado AT folgueraa ontheformationsofthepampasinthefootstepsofdarwinsouthofthesalado
_version_	1769810062572781568

On the formations of the Pampas in the footsteps of Darwin: South of the Salado

Ejemplares similares