The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage

Autores
Ghiglione, Matias; Sue, Christian; Ramos, Miguel Esteban; Tobal, Jonathan Elías; Gallardo, R. E.
Año de publicación
2020
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The Neogene orogenic growth of the Southern Patagonian Andes has been related to the approximation and collision of aseries of segments of the Chile seismic ridge, which separates the Antarctic and Nazca plates, against South America. The compiledthermochronological data consistently indicates an eastward moving trend of exhumation, were uplift of the western basement domainoccurred from 34 to 15 Ma and was followed by denudation of the basement front and the fold and thrust belt between 20 and 5 Ma.There has been an assumption that tectonic growth in southern Patagonia ended in late Miocene times, largely based on the top age ofthe molasse deposits of the Santa Cruz Formation, spanning from 22 19 to 14 Ma. There is, however, multiple thermochronologicalevidence that exhumation in the hinterland continued profusely, with large volumes of rock denudated rapidly between 15 and 5 Ma,and steadily since 7 Ma. However, continental sedimentation rate was very low in the Magallanes?Austral Basin of the SouthernmostAndes after 14 Ma, an effect produced by the dynamic uplift of Patagonia. Contrastingly, the upper Miocene lower Plioceneconstitutes an aggradational period very well developed in the offshore Argentine continental margin. We propose that the greatvolumes of sediments produced by Miocene-Pliocene denudation of the Southernmost Andes bypassed Patagonia and reached theArgentina and Malvinas basins, where they were accommodated in thick sequences with high sedimentation rates. Thosesediments were distributed along the Southern Atlantic margin by sub-Antarctic currents, which propagated into the Argentinecontinental margin during the deepening of the Drake Passage. The sediments were probably funneled through gargantuan fluvialand glacifluvial W`E systems, similar to those preserved in Patagonia from the last glaciation, and axially through the FuegianAndes foothills toward the offshore basins.
Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Sue, Christian. Universite de Franche-Comte; Francia
Fil: Ramos, Miguel Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Tobal, Jonathan Elías. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Gallardo, R. E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
XV Congreso Geológico Chileno
Concepción
Chile
Universidad de Concepción
Materia
NEOGENE
DENUDATION
DRAKE PASSAGE
GLACIATION
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:11336/181235
Acceder
id CONICETDig_d458653a0207487bf7b38e7924ee0b35
oai_identifier_str oai:ri.conicet.gov.ar:11336/181235
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake PassageGhiglione, MatiasSue, ChristianRamos, Miguel EstebanTobal, Jonathan ElíasGallardo, R. E.NEOGENEDENUDATIONDRAKE PASSAGEGLACIATIONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Neogene orogenic growth of the Southern Patagonian Andes has been related to the approximation and collision of aseries of segments of the Chile seismic ridge, which separates the Antarctic and Nazca plates, against South America. The compiledthermochronological data consistently indicates an eastward moving trend of exhumation, were uplift of the western basement domainoccurred from 34 to 15 Ma and was followed by denudation of the basement front and the fold and thrust belt between 20 and 5 Ma.There has been an assumption that tectonic growth in southern Patagonia ended in late Miocene times, largely based on the top age ofthe molasse deposits of the Santa Cruz Formation, spanning from 22 19 to 14 Ma. There is, however, multiple thermochronologicalevidence that exhumation in the hinterland continued profusely, with large volumes of rock denudated rapidly between 15 and 5 Ma,and steadily since 7 Ma. However, continental sedimentation rate was very low in the Magallanes?Austral Basin of the SouthernmostAndes after 14 Ma, an effect produced by the dynamic uplift of Patagonia. Contrastingly, the upper Miocene lower Plioceneconstitutes an aggradational period very well developed in the offshore Argentine continental margin. We propose that the greatvolumes of sediments produced by Miocene-Pliocene denudation of the Southernmost Andes bypassed Patagonia and reached theArgentina and Malvinas basins, where they were accommodated in thick sequences with high sedimentation rates. Thosesediments were distributed along the Southern Atlantic margin by sub-Antarctic currents, which propagated into the Argentinecontinental margin during the deepening of the Drake Passage. The sediments were probably funneled through gargantuan fluvialand glacifluvial W`E systems, similar to those preserved in Patagonia from the last glaciation, and axially through the FuegianAndes foothills toward the offshore basins.Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Sue, Christian. Universite de Franche-Comte; FranciaFil: Ramos, Miguel Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Tobal, Jonathan Elías. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Gallardo, R. E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaXV Congreso Geológico ChilenoConcepciónChileUniversidad de ConcepciónCongreso Geológico de Chile2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/181235The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage; XV Congreso Geológico Chileno ; Concepción; Chile; 2018; 1-1CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://congresogeologicochileno.cl/wp-content/uploads/2018/12/Libro-de-Actas-XVCongresoGeologicoChileno2018-2.pdfinfo:eu-repo/semantics/altIdentifier/url/https://congresogeologicochileno.cl/Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:10:40Zoai:ri.conicet.gov.ar:11336/181235instacron: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:34982025-09-03 10:10:40.884CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage
title The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage
spellingShingle The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage
Ghiglione, Matias
NEOGENE
DENUDATION
DRAKE PASSAGE
GLACIATION
title_short The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage
title_full The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage
title_fullStr The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage
title_full_unstemmed The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage
title_sort The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage
dc.creator.none.fl_str_mv Ghiglione, Matias
Sue, Christian
Ramos, Miguel Esteban
Tobal, Jonathan Elías
Gallardo, R. E.
author Ghiglione, Matias
author_facet Ghiglione, Matias
Sue, Christian
Ramos, Miguel Esteban
Tobal, Jonathan Elías
Gallardo, R. E.
author_role author
author2 Sue, Christian
Ramos, Miguel Esteban
Tobal, Jonathan Elías
Gallardo, R. E.
author2_role author
author
author
author
dc.subject.none.fl_str_mv NEOGENE
DENUDATION
DRAKE PASSAGE
GLACIATION
topic NEOGENE
DENUDATION
DRAKE PASSAGE
GLACIATION
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 Neogene orogenic growth of the Southern Patagonian Andes has been related to the approximation and collision of aseries of segments of the Chile seismic ridge, which separates the Antarctic and Nazca plates, against South America. The compiledthermochronological data consistently indicates an eastward moving trend of exhumation, were uplift of the western basement domainoccurred from 34 to 15 Ma and was followed by denudation of the basement front and the fold and thrust belt between 20 and 5 Ma.There has been an assumption that tectonic growth in southern Patagonia ended in late Miocene times, largely based on the top age ofthe molasse deposits of the Santa Cruz Formation, spanning from 22 19 to 14 Ma. There is, however, multiple thermochronologicalevidence that exhumation in the hinterland continued profusely, with large volumes of rock denudated rapidly between 15 and 5 Ma,and steadily since 7 Ma. However, continental sedimentation rate was very low in the Magallanes?Austral Basin of the SouthernmostAndes after 14 Ma, an effect produced by the dynamic uplift of Patagonia. Contrastingly, the upper Miocene lower Plioceneconstitutes an aggradational period very well developed in the offshore Argentine continental margin. We propose that the greatvolumes of sediments produced by Miocene-Pliocene denudation of the Southernmost Andes bypassed Patagonia and reached theArgentina and Malvinas basins, where they were accommodated in thick sequences with high sedimentation rates. Thosesediments were distributed along the Southern Atlantic margin by sub-Antarctic currents, which propagated into the Argentinecontinental margin during the deepening of the Drake Passage. The sediments were probably funneled through gargantuan fluvialand glacifluvial W`E systems, similar to those preserved in Patagonia from the last glaciation, and axially through the FuegianAndes foothills toward the offshore basins.
Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Sue, Christian. Universite de Franche-Comte; Francia
Fil: Ramos, Miguel Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Tobal, Jonathan Elías. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Gallardo, R. E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
XV Congreso Geológico Chileno
Concepción
Chile
Universidad de Concepción
description The Neogene orogenic growth of the Southern Patagonian Andes has been related to the approximation and collision of aseries of segments of the Chile seismic ridge, which separates the Antarctic and Nazca plates, against South America. The compiledthermochronological data consistently indicates an eastward moving trend of exhumation, were uplift of the western basement domainoccurred from 34 to 15 Ma and was followed by denudation of the basement front and the fold and thrust belt between 20 and 5 Ma.There has been an assumption that tectonic growth in southern Patagonia ended in late Miocene times, largely based on the top age ofthe molasse deposits of the Santa Cruz Formation, spanning from 22 19 to 14 Ma. There is, however, multiple thermochronologicalevidence that exhumation in the hinterland continued profusely, with large volumes of rock denudated rapidly between 15 and 5 Ma,and steadily since 7 Ma. However, continental sedimentation rate was very low in the Magallanes?Austral Basin of the SouthernmostAndes after 14 Ma, an effect produced by the dynamic uplift of Patagonia. Contrastingly, the upper Miocene lower Plioceneconstitutes an aggradational period very well developed in the offshore Argentine continental margin. We propose that the greatvolumes of sediments produced by Miocene-Pliocene denudation of the Southernmost Andes bypassed Patagonia and reached theArgentina and Malvinas basins, where they were accommodated in thick sequences with high sedimentation rates. Thosesediments were distributed along the Southern Atlantic margin by sub-Antarctic currents, which propagated into the Argentinecontinental margin during the deepening of the Drake Passage. The sediments were probably funneled through gargantuan fluvialand glacifluvial W`E systems, similar to those preserved in Patagonia from the last glaciation, and axially through the FuegianAndes foothills toward the offshore basins.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/181235
The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage; XV Congreso Geológico Chileno ; Concepción; Chile; 2018; 1-1
CONICET Digital
CONICET
url http://hdl.handle.net/11336/181235
identifier_str_mv The Relation Between Neogene Denudation of the Southernmost Andes and Sedimentation in the Offshore Argentine and Malvinas Basins During the Opening of the Drake Passage; XV Congreso Geológico Chileno ; Concepción; Chile; 2018; 1-1
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://congresogeologicochileno.cl/wp-content/uploads/2018/12/Libro-de-Actas-XVCongresoGeologicoChileno2018-2.pdf
info:eu-repo/semantics/altIdentifier/url/https://congresogeologicochileno.cl/
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/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Congreso Geológico de Chile
publisher.none.fl_str_mv Congreso Geológico de Chile
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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
_version_ 1842270129630478336
score 13.13397

Publicaciones similares