The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut

On the eastern erosion scarp of Pampa de Salamanca (extraandean Chubut) adyacent to Atlantic Coast, an extensive area of slides is identyfied. The description was done exclusively with the study of photograms and satellital images and lacking of field control. The area is located between 45°00'...

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Autor principal:	Gonzalez Diaz, E.F.
Formato:	JOUR
Materias:	Chubut Province Earth flows Pampa de Salamanca Rotacional slides argillaceous deposit debris flow erosion escarpment landslide Argentina Chubut South America Western Hemisphere World
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00044822_v59_n4_p743_GonzalezDiaz
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00044822_v59_n4_p743_GonzalezDiaz
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spelling	todo:paper_00044822_v59_n4_p743_GonzalezDiaz2023-10-03T13:58:01Z The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut Gonzalez Diaz, E.F. Chubut Province Earth flows Pampa de Salamanca Rotacional slides argillaceous deposit debris flow erosion escarpment landslide Argentina Chubut South America Western Hemisphere World On the eastern erosion scarp of Pampa de Salamanca (extraandean Chubut) adyacent to Atlantic Coast, an extensive area of slides is identyfied. The description was done exclusively with the study of photograms and satellital images and lacking of field control. The area is located between 45°00'S and 45°45'S, and is aproximately 70-75 km in lenght from north to south. Two types of slide movements were clearly distinguished: the ancient and the modern. The first are bigger and show degradation evidences. The second are smaller and are later local movements on sections of the ancients, such as earth flows and slumps. A provisional classification of ancients is: 1) great slumps with scarse initial morphological characteristics in the proximal side and an extensive flow distal phase; 2) multiple retrogressive slumps; and 3) coalescent slumps with small terminal earthflows. The author suppose that the argillaceous lower levels (plastic and expansive) of Chenque Formation, one section on the complex Tertiary sequence, are essential to these gravitational movements. In the ancient excesive precipitations at indetermined times (Interglacial ?, Postglacial ?), were the triggering factors. In the modern movements the basal fluvial erosion contributes with the instability of the slopes. The main scope of this paper is the description and the knowledge, not only their conspicuous morphology but also is proposed its genesis.ocurred on a regional horizontal structural landscape. Other Geomorphic units are also synthetically described. © 2004 Asociación Geológica Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v59_n4_p743_GonzalezDiaz
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chubut Province Earth flows Pampa de Salamanca Rotacional slides argillaceous deposit debris flow erosion escarpment landslide Argentina Chubut South America Western Hemisphere World
spellingShingle	Chubut Province Earth flows Pampa de Salamanca Rotacional slides argillaceous deposit debris flow erosion escarpment landslide Argentina Chubut South America Western Hemisphere World Gonzalez Diaz, E.F. The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut
topic_facet	Chubut Province Earth flows Pampa de Salamanca Rotacional slides argillaceous deposit debris flow erosion escarpment landslide Argentina Chubut South America Western Hemisphere World
description	On the eastern erosion scarp of Pampa de Salamanca (extraandean Chubut) adyacent to Atlantic Coast, an extensive area of slides is identyfied. The description was done exclusively with the study of photograms and satellital images and lacking of field control. The area is located between 45°00'S and 45°45'S, and is aproximately 70-75 km in lenght from north to south. Two types of slide movements were clearly distinguished: the ancient and the modern. The first are bigger and show degradation evidences. The second are smaller and are later local movements on sections of the ancients, such as earth flows and slumps. A provisional classification of ancients is: 1) great slumps with scarse initial morphological characteristics in the proximal side and an extensive flow distal phase; 2) multiple retrogressive slumps; and 3) coalescent slumps with small terminal earthflows. The author suppose that the argillaceous lower levels (plastic and expansive) of Chenque Formation, one section on the complex Tertiary sequence, are essential to these gravitational movements. In the ancient excesive precipitations at indetermined times (Interglacial ?, Postglacial ?), were the triggering factors. In the modern movements the basal fluvial erosion contributes with the instability of the slopes. The main scope of this paper is the description and the knowledge, not only their conspicuous morphology but also is proposed its genesis.ocurred on a regional horizontal structural landscape. Other Geomorphic units are also synthetically described. © 2004 Asociación Geológica Argentina.
format	JOUR
author	Gonzalez Diaz, E.F.
author_facet	Gonzalez Diaz, E.F.
author_sort	Gonzalez Diaz, E.F.
title	The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut
title_short	The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut
title_full	The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut
title_fullStr	The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut
title_full_unstemmed	The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut
title_sort	extensive zone of slides on the eastern erosion scarp of pampa de salamanca, chubut
url	http://hdl.handle.net/20.500.12110/paper_00044822_v59_n4_p743_GonzalezDiaz
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The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut

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