Late quaternary glaciation history of Isla de los Estados, southeasternmost South America

Autores
Möller, Per; Hjort, Christian; Björck, Svante; Rabassa, Jorge Oscar; Ponce, Juan Federico
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Isla de los Estados is a mountainous island southeast of Tierra del Fuego, in southernmost South America. Its central and eastern parts have an alpine topography, transected by U-shaped valleys, small, partly over-deepened fjords, and a multitude of abandoned cirques, all associated with extensive former local glaciations. Traces of glacial erosion generally reach 400–450 m a.s.l., and above that trimline a distinct sharp-edged nunatak derived landscape is present. The westernmost part of the island has a lower, more subdued topography, reflecting its "softer" geology but possibly also over-running and erosion by mainland-derived ice streams. The present study concentrated on glacigenic sediment sequences exposed along coastal erosional cliffs. A combination of OSL and 14C datings show that these sediments mostly date from the latest (Wisconsinan/Weichselian) glacial cycle, i.e. from the last ca. 100 ka with the oldest (glaciolacustrine) deposits possibly as old as 90–80 ka. The upper parts of overlying tills, with associated lateral and terminal moraines from glaciers that expanded onto an eustatically exposed dry shelf north of the island, date from the last global glacial maximum (LGM). Radiocarbon ages of peat and lake sediments indicate that deglaciation began 17–16 cal ka BP.
Fil: Möller, Per. Lund University; Suecia
Fil: Hjort, Christian. Lund University; Suecia
Fil: Björck, Svante. Lund University; Suecia
Fil: Rabassa, Jorge Oscar. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Cátedra de Geología del Cuaternario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de la Patagonia; Argentina
Fil: Ponce, Juan Federico. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Cátedra de Geología del Cuaternario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Materia
Isla de Los Estados
Tierra del Fuego
South America
Glacial Geology
Quaternary History
Glacial Chronology
Glacial Sdimentology
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:11336/12666
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/12666
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Late quaternary glaciation history of Isla de los Estados, southeasternmost South AmericaMöller, PerHjort, ChristianBjörck, SvanteRabassa, Jorge OscarPonce, Juan FedericoIsla de Los EstadosTierra del FuegoSouth AmericaGlacial GeologyQuaternary HistoryGlacial ChronologyGlacial Sdimentologyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Isla de los Estados is a mountainous island southeast of Tierra del Fuego, in southernmost South America. Its central and eastern parts have an alpine topography, transected by U-shaped valleys, small, partly over-deepened fjords, and a multitude of abandoned cirques, all associated with extensive former local glaciations. Traces of glacial erosion generally reach 400–450 m a.s.l., and above that trimline a distinct sharp-edged nunatak derived landscape is present. The westernmost part of the island has a lower, more subdued topography, reflecting its "softer" geology but possibly also over-running and erosion by mainland-derived ice streams. The present study concentrated on glacigenic sediment sequences exposed along coastal erosional cliffs. A combination of OSL and 14C datings show that these sediments mostly date from the latest (Wisconsinan/Weichselian) glacial cycle, i.e. from the last ca. 100 ka with the oldest (glaciolacustrine) deposits possibly as old as 90–80 ka. The upper parts of overlying tills, with associated lateral and terminal moraines from glaciers that expanded onto an eustatically exposed dry shelf north of the island, date from the last global glacial maximum (LGM). Radiocarbon ages of peat and lake sediments indicate that deglaciation began 17–16 cal ka BP.Fil: Möller, Per. Lund University; SueciaFil: Hjort, Christian. Lund University; SueciaFil: Björck, Svante. Lund University; SueciaFil: Rabassa, Jorge Oscar. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Cátedra de Geología del Cuaternario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de la Patagonia; ArgentinaFil: Ponce, Juan Federico. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Cátedra de Geología del Cuaternario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaUniv Washington2010-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12666Möller, Per; Hjort, Christian; Björck, Svante; Rabassa, Jorge Oscar; Ponce, Juan Federico; Late quaternary glaciation history of Isla de los Estados, southeasternmost South America; Univ Washington; Quaternary Research; 73; 3; 5-2010; 521-5340033-5894enginfo:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/quaternary-research/article/div-classtitlelate-quaternary-glaciation-history-of-isla-de-los-estados-southeasternmost-south-americadiv/E838E5094D54FF96A11FACEA5F77E0CEinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.yqres.2010.02.004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:04:08Zoai:ri.conicet.gov.ar:11336/12666instacron: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:34982025-09-10 13:04:08.947CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Late quaternary glaciation history of Isla de los Estados, southeasternmost South America
title Late quaternary glaciation history of Isla de los Estados, southeasternmost South America
spellingShingle Late quaternary glaciation history of Isla de los Estados, southeasternmost South America
Möller, Per
Isla de Los Estados
Tierra del Fuego
South America
Glacial Geology
Quaternary History
Glacial Chronology
Glacial Sdimentology
title_short Late quaternary glaciation history of Isla de los Estados, southeasternmost South America
title_full Late quaternary glaciation history of Isla de los Estados, southeasternmost South America
title_fullStr Late quaternary glaciation history of Isla de los Estados, southeasternmost South America
title_full_unstemmed Late quaternary glaciation history of Isla de los Estados, southeasternmost South America
title_sort Late quaternary glaciation history of Isla de los Estados, southeasternmost South America
dc.creator.none.fl_str_mv Möller, Per
Hjort, Christian
Björck, Svante
Rabassa, Jorge Oscar
Ponce, Juan Federico
author Möller, Per
author_facet Möller, Per
Hjort, Christian
Björck, Svante
Rabassa, Jorge Oscar
Ponce, Juan Federico
author_role author
author2 Hjort, Christian
Björck, Svante
Rabassa, Jorge Oscar
Ponce, Juan Federico
author2_role author
author
author
author
dc.subject.none.fl_str_mv Isla de Los Estados
Tierra del Fuego
South America
Glacial Geology
Quaternary History
Glacial Chronology
Glacial Sdimentology
topic Isla de Los Estados
Tierra del Fuego
South America
Glacial Geology
Quaternary History
Glacial Chronology
Glacial Sdimentology
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Isla de los Estados is a mountainous island southeast of Tierra del Fuego, in southernmost South America. Its central and eastern parts have an alpine topography, transected by U-shaped valleys, small, partly over-deepened fjords, and a multitude of abandoned cirques, all associated with extensive former local glaciations. Traces of glacial erosion generally reach 400–450 m a.s.l., and above that trimline a distinct sharp-edged nunatak derived landscape is present. The westernmost part of the island has a lower, more subdued topography, reflecting its "softer" geology but possibly also over-running and erosion by mainland-derived ice streams. The present study concentrated on glacigenic sediment sequences exposed along coastal erosional cliffs. A combination of OSL and 14C datings show that these sediments mostly date from the latest (Wisconsinan/Weichselian) glacial cycle, i.e. from the last ca. 100 ka with the oldest (glaciolacustrine) deposits possibly as old as 90–80 ka. The upper parts of overlying tills, with associated lateral and terminal moraines from glaciers that expanded onto an eustatically exposed dry shelf north of the island, date from the last global glacial maximum (LGM). Radiocarbon ages of peat and lake sediments indicate that deglaciation began 17–16 cal ka BP.
Fil: Möller, Per. Lund University; Suecia
Fil: Hjort, Christian. Lund University; Suecia
Fil: Björck, Svante. Lund University; Suecia
Fil: Rabassa, Jorge Oscar. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Cátedra de Geología del Cuaternario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de la Patagonia; Argentina
Fil: Ponce, Juan Federico. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Cátedra de Geología del Cuaternario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
description Isla de los Estados is a mountainous island southeast of Tierra del Fuego, in southernmost South America. Its central and eastern parts have an alpine topography, transected by U-shaped valleys, small, partly over-deepened fjords, and a multitude of abandoned cirques, all associated with extensive former local glaciations. Traces of glacial erosion generally reach 400–450 m a.s.l., and above that trimline a distinct sharp-edged nunatak derived landscape is present. The westernmost part of the island has a lower, more subdued topography, reflecting its "softer" geology but possibly also over-running and erosion by mainland-derived ice streams. The present study concentrated on glacigenic sediment sequences exposed along coastal erosional cliffs. A combination of OSL and 14C datings show that these sediments mostly date from the latest (Wisconsinan/Weichselian) glacial cycle, i.e. from the last ca. 100 ka with the oldest (glaciolacustrine) deposits possibly as old as 90–80 ka. The upper parts of overlying tills, with associated lateral and terminal moraines from glaciers that expanded onto an eustatically exposed dry shelf north of the island, date from the last global glacial maximum (LGM). Radiocarbon ages of peat and lake sediments indicate that deglaciation began 17–16 cal ka BP.
publishDate 2010
dc.date.none.fl_str_mv 2010-05
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/11336/12666
Möller, Per; Hjort, Christian; Björck, Svante; Rabassa, Jorge Oscar; Ponce, Juan Federico; Late quaternary glaciation history of Isla de los Estados, southeasternmost South America; Univ Washington; Quaternary Research; 73; 3; 5-2010; 521-534
0033-5894
url http://hdl.handle.net/11336/12666
identifier_str_mv Möller, Per; Hjort, Christian; Björck, Svante; Rabassa, Jorge Oscar; Ponce, Juan Federico; Late quaternary glaciation history of Isla de los Estados, southeasternmost South America; Univ Washington; Quaternary Research; 73; 3; 5-2010; 521-534
0033-5894
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/quaternary-research/article/div-classtitlelate-quaternary-glaciation-history-of-isla-de-los-estados-southeasternmost-south-americadiv/E838E5094D54FF96A11FACEA5F77E0CE
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.yqres.2010.02.004
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
application/pdf
dc.publisher.none.fl_str_mv Univ Washington
publisher.none.fl_str_mv Univ Washington
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
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score 12.993085

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