The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas

Autores
Acevedo, Rogelio Daniel; Rabassa, Jorge Oscar; Ponce, Juan Federico; Martínez, Oscar Alfredo; Orgeira, Maria Julia; Prezzi, Claudia Beatriz; Corbella, Jorge Hugo; Gonzalez Guillot, Mauricio Alberto; Rocca, Maximiliano; Subías, Ignacio; Vasquez, Carlos Alberto
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Bajada del Diablo astrobleme-strewn field is a huge domain of enigmatic circular structures located in Central Patagonia. Three more localities are herein described, adding to the first area studied so far (Acevedo et al., 2009). Taking into consideration the four areas, a single, blurred crater dispersion ellipse has been identified. The four sectors have been now investigated, mapped and georeferred, and their circular structures,with a total of 189, some of them partially obliterated by erosion or sediment accumulation, were identified by remote sensing techniques, but many of them have been evaluated in situ and interpreted as impact craters. Moreover, two of the structures have been surveyed in detail in the field using a total station instrument. In addition to the previously known occurrence of circular structures on the Eruptive Complex Quiñelaf (Miocene basalts), the Pampa Sastre Fm. (Pliocene conglomerates) and the Pleistocene pediment gravels and sands, and the geomorphological inferences that have suggested the extraterrestrial origin of this event (since no other natural Earth surface process could be responsible of their formation), it should be now added the recurrent absence of the Pliocene stratigraphic unit at the bottom of the craters found on the pediment gravel and sands . Its removal has been interpreted as directly related to the impact, according to the magnetometric record of existing magnetic anomalies. Other preliminary observations on the collected samples, glass, breccias and, most relevant, Fe-Nibearing spherules picked up within the impact zones, are herein discussed. Two hypotheses have been put forward about the nature of the possible impacting object that formed these astroblemes which, fragmented in hundreds of pieces, hit the surface of the Earth perhaps in Middle Pleistocene times. One of them is related to a desintegrated asteroid of the rubble-pile type, whereas the second hypothesis refers to the collision of a split comet with the Earth surface, being this the most probable since no meteorite fragments have been found so far.
Fil: Acevedo, Rogelio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Rabassa, Jorge Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Universidad Nacional de Tierra del Fuego; Argentina
Fil: Ponce, Juan Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Martínez, Oscar Alfredo. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Orgeira, Maria Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Corbella, Jorge Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Universidad Nacional de la Patagonia Austral; Argentina
Fil: Gonzalez Guillot, Mauricio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Rocca, Maximiliano. Mendoza 2779; Argentina
Fil: Subías, Ignacio. Universidad de Zaragoza; España
Fil: Vasquez, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Materia
Meteoritos
Cráteres de Impacto
Patagonia
Geofísica
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/268842
Acceder
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spelling The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areasAcevedo, Rogelio DanielRabassa, Jorge OscarPonce, Juan FedericoMartínez, Oscar AlfredoOrgeira, Maria JuliaPrezzi, Claudia BeatrizCorbella, Jorge HugoGonzalez Guillot, Mauricio AlbertoRocca, MaximilianoSubías, IgnacioVasquez, Carlos AlbertoMeteoritosCráteres de ImpactoPatagoniaGeofísicahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Bajada del Diablo astrobleme-strewn field is a huge domain of enigmatic circular structures located in Central Patagonia. Three more localities are herein described, adding to the first area studied so far (Acevedo et al., 2009). Taking into consideration the four areas, a single, blurred crater dispersion ellipse has been identified. The four sectors have been now investigated, mapped and georeferred, and their circular structures,with a total of 189, some of them partially obliterated by erosion or sediment accumulation, were identified by remote sensing techniques, but many of them have been evaluated in situ and interpreted as impact craters. Moreover, two of the structures have been surveyed in detail in the field using a total station instrument. In addition to the previously known occurrence of circular structures on the Eruptive Complex Quiñelaf (Miocene basalts), the Pampa Sastre Fm. (Pliocene conglomerates) and the Pleistocene pediment gravels and sands, and the geomorphological inferences that have suggested the extraterrestrial origin of this event (since no other natural Earth surface process could be responsible of their formation), it should be now added the recurrent absence of the Pliocene stratigraphic unit at the bottom of the craters found on the pediment gravel and sands . Its removal has been interpreted as directly related to the impact, according to the magnetometric record of existing magnetic anomalies. Other preliminary observations on the collected samples, glass, breccias and, most relevant, Fe-Nibearing spherules picked up within the impact zones, are herein discussed. Two hypotheses have been put forward about the nature of the possible impacting object that formed these astroblemes which, fragmented in hundreds of pieces, hit the surface of the Earth perhaps in Middle Pleistocene times. One of them is related to a desintegrated asteroid of the rubble-pile type, whereas the second hypothesis refers to the collision of a split comet with the Earth surface, being this the most probable since no meteorite fragments have been found so far.Fil: Acevedo, Rogelio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Rabassa, Jorge Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Universidad Nacional de Tierra del Fuego; ArgentinaFil: Ponce, Juan Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Martínez, Oscar Alfredo. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Orgeira, Maria Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Corbella, Jorge Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Universidad Nacional de la Patagonia Austral; ArgentinaFil: Gonzalez Guillot, Mauricio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Rocca, Maximiliano. Mendoza 2779; ArgentinaFil: Subías, Ignacio. Universidad de Zaragoza; EspañaFil: Vasquez, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaElsevier Science2012-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/268842Acevedo, Rogelio Daniel; Rabassa, Jorge Oscar; Ponce, Juan Federico; Martínez, Oscar Alfredo; Orgeira, Maria Julia; et al.; The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas; Elsevier Science; Geomorphology; 169-170; 10-2012; 151-1640169-555XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0169555X12001936info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2012.04.020info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:52:33Zoai:ri.conicet.gov.ar:11336/268842instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:52:33.302CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas
title The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas
spellingShingle The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas
Acevedo, Rogelio Daniel
Meteoritos
Cráteres de Impacto
Patagonia
Geofísica
title_short The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas
title_full The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas
title_fullStr The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas
title_full_unstemmed The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas
title_sort The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas
dc.creator.none.fl_str_mv Acevedo, Rogelio Daniel
Rabassa, Jorge Oscar
Ponce, Juan Federico
Martínez, Oscar Alfredo
Orgeira, Maria Julia
Prezzi, Claudia Beatriz
Corbella, Jorge Hugo
Gonzalez Guillot, Mauricio Alberto
Rocca, Maximiliano
Subías, Ignacio
Vasquez, Carlos Alberto
author Acevedo, Rogelio Daniel
author_facet Acevedo, Rogelio Daniel
Rabassa, Jorge Oscar
Ponce, Juan Federico
Martínez, Oscar Alfredo
Orgeira, Maria Julia
Prezzi, Claudia Beatriz
Corbella, Jorge Hugo
Gonzalez Guillot, Mauricio Alberto
Rocca, Maximiliano
Subías, Ignacio
Vasquez, Carlos Alberto
author_role author
author2 Rabassa, Jorge Oscar
Ponce, Juan Federico
Martínez, Oscar Alfredo
Orgeira, Maria Julia
Prezzi, Claudia Beatriz
Corbella, Jorge Hugo
Gonzalez Guillot, Mauricio Alberto
Rocca, Maximiliano
Subías, Ignacio
Vasquez, Carlos Alberto
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Meteoritos
Cráteres de Impacto
Patagonia
Geofísica
topic Meteoritos
Cráteres de Impacto
Patagonia
Geofísica
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Bajada del Diablo astrobleme-strewn field is a huge domain of enigmatic circular structures located in Central Patagonia. Three more localities are herein described, adding to the first area studied so far (Acevedo et al., 2009). Taking into consideration the four areas, a single, blurred crater dispersion ellipse has been identified. The four sectors have been now investigated, mapped and georeferred, and their circular structures,with a total of 189, some of them partially obliterated by erosion or sediment accumulation, were identified by remote sensing techniques, but many of them have been evaluated in situ and interpreted as impact craters. Moreover, two of the structures have been surveyed in detail in the field using a total station instrument. In addition to the previously known occurrence of circular structures on the Eruptive Complex Quiñelaf (Miocene basalts), the Pampa Sastre Fm. (Pliocene conglomerates) and the Pleistocene pediment gravels and sands, and the geomorphological inferences that have suggested the extraterrestrial origin of this event (since no other natural Earth surface process could be responsible of their formation), it should be now added the recurrent absence of the Pliocene stratigraphic unit at the bottom of the craters found on the pediment gravel and sands . Its removal has been interpreted as directly related to the impact, according to the magnetometric record of existing magnetic anomalies. Other preliminary observations on the collected samples, glass, breccias and, most relevant, Fe-Nibearing spherules picked up within the impact zones, are herein discussed. Two hypotheses have been put forward about the nature of the possible impacting object that formed these astroblemes which, fragmented in hundreds of pieces, hit the surface of the Earth perhaps in Middle Pleistocene times. One of them is related to a desintegrated asteroid of the rubble-pile type, whereas the second hypothesis refers to the collision of a split comet with the Earth surface, being this the most probable since no meteorite fragments have been found so far.
Fil: Acevedo, Rogelio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Rabassa, Jorge Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Universidad Nacional de Tierra del Fuego; Argentina
Fil: Ponce, Juan Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Martínez, Oscar Alfredo. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Orgeira, Maria Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Corbella, Jorge Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Universidad Nacional de la Patagonia Austral; Argentina
Fil: Gonzalez Guillot, Mauricio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Rocca, Maximiliano. Mendoza 2779; Argentina
Fil: Subías, Ignacio. Universidad de Zaragoza; España
Fil: Vasquez, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
description The Bajada del Diablo astrobleme-strewn field is a huge domain of enigmatic circular structures located in Central Patagonia. Three more localities are herein described, adding to the first area studied so far (Acevedo et al., 2009). Taking into consideration the four areas, a single, blurred crater dispersion ellipse has been identified. The four sectors have been now investigated, mapped and georeferred, and their circular structures,with a total of 189, some of them partially obliterated by erosion or sediment accumulation, were identified by remote sensing techniques, but many of them have been evaluated in situ and interpreted as impact craters. Moreover, two of the structures have been surveyed in detail in the field using a total station instrument. In addition to the previously known occurrence of circular structures on the Eruptive Complex Quiñelaf (Miocene basalts), the Pampa Sastre Fm. (Pliocene conglomerates) and the Pleistocene pediment gravels and sands, and the geomorphological inferences that have suggested the extraterrestrial origin of this event (since no other natural Earth surface process could be responsible of their formation), it should be now added the recurrent absence of the Pliocene stratigraphic unit at the bottom of the craters found on the pediment gravel and sands . Its removal has been interpreted as directly related to the impact, according to the magnetometric record of existing magnetic anomalies. Other preliminary observations on the collected samples, glass, breccias and, most relevant, Fe-Nibearing spherules picked up within the impact zones, are herein discussed. Two hypotheses have been put forward about the nature of the possible impacting object that formed these astroblemes which, fragmented in hundreds of pieces, hit the surface of the Earth perhaps in Middle Pleistocene times. One of them is related to a desintegrated asteroid of the rubble-pile type, whereas the second hypothesis refers to the collision of a split comet with the Earth surface, being this the most probable since no meteorite fragments have been found so far.
publishDate 2012
dc.date.none.fl_str_mv 2012-10
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/11336/268842
Acevedo, Rogelio Daniel; Rabassa, Jorge Oscar; Ponce, Juan Federico; Martínez, Oscar Alfredo; Orgeira, Maria Julia; et al.; The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas; Elsevier Science; Geomorphology; 169-170; 10-2012; 151-164
0169-555X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/268842
identifier_str_mv Acevedo, Rogelio Daniel; Rabassa, Jorge Oscar; Ponce, Juan Federico; Martínez, Oscar Alfredo; Orgeira, Maria Julia; et al.; The Bajada del Diablo astrobleme-strewn field, central Patagonia Argentina: Extending the exploration to surrounding areas; Elsevier Science; Geomorphology; 169-170; 10-2012; 151-164
0169-555X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0169555X12001936
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2012.04.020
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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