Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S)

Five prehistoric rock-avalanches are described in the northern cordilleran region of Neuquén Province, between 37°15′ and 37°30′S and between 70°55′ and 71°05′W. These slides and their deposits were not previously identified and moreover they were classified as glacial and glaciofluvial in origin. A...

Descripción completa

Detalles Bibliográficos
Autores: Gonzalez Diaz, E.F., Folguera, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2005
País:Argentina
Institución:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
Repositorio:Biblioteca Digital (UBA-FCEN)
Idioma:inglés
OAI Identifier:paperaa:paper_00044822_v60_n3_p446_GonzalezDiaz
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v60_n3_p446_GonzalezDiaz
Access Level:acceso abierto
Palabra clave:Break-away zones
Geological hazards
Northern Neuquén
Rock-avalanches
Seismic trigger
cordillera
deposition
glaciofluvial deposit
prehistoric
rock avalanche
rock block
shock wave
sliding
structural geology
Argentina
Neuquen
South America
Lama guanicoe
id AR_41369af971dfa114beed9b00a8ff2238
oai_identifier_str paperaa:paper_00044822_v60_n3_p446_GonzalezDiaz
network_acronym_str AR
network_name_str Argentina
repository_id_str
spelling Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S) Gonzalez Diaz, E.F.Folguera, A.Break-away zonesGeological hazardsNorthern NeuquénRock-avalanchesSeismic triggercordilleradepositionglaciofluvial depositprehistoricrock avalancherock blockshock waveslidingstructural geologyArgentinaNeuquenSouth AmericaLama guanicoeFive prehistoric rock-avalanches are described in the northern cordilleran region of Neuquén Province, between 37°15′ and 37°30′S and between 70°55′ and 71°05′W. These slides and their deposits were not previously identified and moreover they were classified as glacial and glaciofluvial in origin. All of them are developed on volcanic-sedimentary deposits. They are named after local places: Cerro Piche Moncol, Cerro Guañaco, Cerro Coronal, Laguna Negra and Laguna Lauquen Mallin avalanches. The first three form a group of avalanches situated north of Reñileuvú creek, in the vicinity of the previously described Moncol rock-avalanche. Their break-away zones are located on the lateral slopes of a pre-existing deep glacial valley. The biggest rock-avalanche is the Cerro Piche Moncol and its deposits are due to the collapse of the southern flank of a volcanic edifice with a small caldera. The Cerro Guañaco, Cerro Coronal and Laguna Negra rock-avalanches began as a slump slide to evolving distally into a flow. The slides of Laguna Lauquen Mallín are big rock-block slides. Some local factors, principally contrasting lithology and physical properties, structural factors and more humid conditions during postglacial times favourable conditions for the loss of slope equilibrium. The authors suggest that these gravitational movements triggered by seismic shock. The age of these rock-avalanches is unknown but they must be younger than last local glaciation. © 2005 Asociación Geológica Argentina.Fil:Folguera, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2005info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_00044822_v60_n3_p446_GonzalezDiazRev. Asoc. Geol. Argent. 2005;60(3):446-460reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2024-05-10T10:42:39Zpaperaa:paper_00044822_v60_n3_p446_GonzalezDiazInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962024-05-10 10:42:40.163Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S)
title Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S)
spellingShingle Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S)
Gonzalez Diaz, E.F.
Break-away zones
Geological hazards
Northern Neuquén
Rock-avalanches
Seismic trigger
cordillera
deposition
glaciofluvial deposit
prehistoric
rock avalanche
rock block
shock wave
sliding
structural geology
Argentina
Neuquen
South America
Lama guanicoe
title_short Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S)
title_full Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S)
title_fullStr Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S)
title_full_unstemmed Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S)
title_sort Reconnaissance of prehistoric rock-avalanches and rock blocks slides in the Andean area of Neuquén (37°15′-37°30′S)
dc.creator.none.fl_str_mv Gonzalez Diaz, E.F.
Folguera, A.
author Gonzalez Diaz, E.F.
author_facet Gonzalez Diaz, E.F.
Folguera, A.
author_role author
author2 Folguera, A.
author2_role author
dc.subject.none.fl_str_mv Break-away zones
Geological hazards
Northern Neuquén
Rock-avalanches
Seismic trigger
cordillera
deposition
glaciofluvial deposit
prehistoric
rock avalanche
rock block
shock wave
sliding
structural geology
Argentina
Neuquen
South America
Lama guanicoe
topic Break-away zones
Geological hazards
Northern Neuquén
Rock-avalanches
Seismic trigger
cordillera
deposition
glaciofluvial deposit
prehistoric
rock avalanche
rock block
shock wave
sliding
structural geology
Argentina
Neuquen
South America
Lama guanicoe
description Five prehistoric rock-avalanches are described in the northern cordilleran region of Neuquén Province, between 37°15′ and 37°30′S and between 70°55′ and 71°05′W. These slides and their deposits were not previously identified and moreover they were classified as glacial and glaciofluvial in origin. All of them are developed on volcanic-sedimentary deposits. They are named after local places: Cerro Piche Moncol, Cerro Guañaco, Cerro Coronal, Laguna Negra and Laguna Lauquen Mallin avalanches. The first three form a group of avalanches situated north of Reñileuvú creek, in the vicinity of the previously described Moncol rock-avalanche. Their break-away zones are located on the lateral slopes of a pre-existing deep glacial valley. The biggest rock-avalanche is the Cerro Piche Moncol and its deposits are due to the collapse of the southern flank of a volcanic edifice with a small caldera. The Cerro Guañaco, Cerro Coronal and Laguna Negra rock-avalanches began as a slump slide to evolving distally into a flow. The slides of Laguna Lauquen Mallín are big rock-block slides. Some local factors, principally contrasting lithology and physical properties, structural factors and more humid conditions during postglacial times favourable conditions for the loss of slope equilibrium. The authors suggest that these gravitational movements triggered by seismic shock. The age of these rock-avalanches is unknown but they must be younger than last local glaciation. © 2005 Asociación Geológica Argentina.
publishDate 2005
dc.date.none.fl_str_mv 2005
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12110/paper_00044822_v60_n3_p446_GonzalezDiaz
url http://hdl.handle.net/20.500.12110/paper_00044822_v60_n3_p446_GonzalezDiaz
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Rev. Asoc. Geol. Argent. 2005;60(3):446-460
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (UBA-FCEN)
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
_version_ 1799196679826571264
score 15,811543

Similares en LA Referencia