Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula

Abstract. Foraminiferal assemblages recovered from Cape Lamb sediments on Vega Island are examined and illustrated herein. The foraminifera were discovered in Cenozoic debris and palagonitic breccia lithofacies that crop out at the southwestern tip of Cape Lamb. Among all the Cenozoic diamictite dep...

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Main Authors: Carames, Andrea Alejandra, Concheyro, Graciela
Format: Article in Journal/Newspaper
Language:English
Published: Asociacion Paleontologica Argentina
Subjects:
Online Access:http://hdl.handle.net/11336/3097
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author Carames, Andrea Alejandra
Concheyro, Graciela
author_facet Carames, Andrea Alejandra
Concheyro, Graciela
author_sort Carames, Andrea Alejandra
collection CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
description Abstract. Foraminiferal assemblages recovered from Cape Lamb sediments on Vega Island are examined and illustrated herein. The foraminifera were discovered in Cenozoic debris and palagonitic breccia lithofacies that crop out at the southwestern tip of Cape Lamb. Among all the Cenozoic diamictite deposits recognized in this island, the studied sediments are the youngest and the most fossiliferous. Pectinids, brachiopods, and microfaunas are exceptionally well preserved and indicate little or no transport. The foraminiferal assemblage is dominated by infaunal species, with the most abundant including Globocassidulina biora, Cribroelphidium sp. aff. E. excavatum, and Cassidulinoides parkerianus, and the epifaunal Cibicides refulgens. These foraminifera suggest a normal inner shelf marine environment. Microfossils and macrofauna, stratigraphical evidence observed in the field and published isotopic ages from the nearby Cape Lamb suggest a Pleistocene age for this deposit. Resumen. Foraminíferos del Cenozoico Tardío, Cabo Lamb, Isla Vega, Península Antártica. Se examina e ilustra la microfauna de foraminíferos recuperada de sedimentitas del Cabo Lamb, Isla Vega. La asociación estudiada se halló en una acumulación cenozoica compuesta por fragmentos rocosos y brechas palagoníticas, que aflora en el extremo sudoeste del cabo Lamb. Estas sedimentitas, son las diamictitas cenozoicas más jóvenes y más fosilíferas reconocidas en la isla y al presentar una excepcional preservación de pectínidos y braquiópodos, llamaron la atención como probables hospedadoras de microfaunas que habrían sufrido poco transporte. La asociación de foraminíferos es dominada por especies infaunales como Globocassidulina biora, Cribroelphidium sp. aff. E. excavatum y Cas- sidulinoides parkerianus, y el epifaunal Cibicides refulgens. Los foraminíferos sugieren un ambiente marino normal de plataforma interna. microfósiles, macrofauna, evidencias estratigráficas que surgen de las observaciones de campo y edades isotópicas obtenidas para depósitos muy ...
format Article in Journal/Newspaper
genre Antarc*
Antarctic
Antarctic Peninsula
Antarctica
Antártica
Vega Island
genre_facet Antarc*
Antarctic
Antarctic Peninsula
Antarctica
Antártica
Vega Island
geographic Antarctic
Antarctic Peninsula
cabo Lamb
Cape Lamb
isla Vega
Vega Island
geographic_facet Antarctic
Antarctic Peninsula
cabo Lamb
Cape Lamb
isla Vega
Vega Island
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institution Open Polar
language English
long_lat ENVELOPE(-60.800,-60.800,-73.683,-73.683)
ENVELOPE(-57.621,-57.621,-63.909,-63.909)
ENVELOPE(-57.500,-57.500,-63.833,-63.833)
ENVELOPE(-57.500,-57.500,-63.833,-63.833)
op_collection_id ftconicet
op_relation info:eu-repo/semantics/altIdentifier/url/http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/588
info:eu-repo/semantics/altIdentifier/ark/10.5710/AmGh.7.2.2013.588
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.com/10.5710/AmGh.7.2.2013.588
http://hdl.handle.net/11336/3097
op_rights info:eu-repo/semantics/openAccess
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publisher Asociacion Paleontologica Argentina
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spelling ftconicet:oai:ri.conicet.gov.ar:11336/3097 2025-01-16T19:42:20+00:00 Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula Carames, Andrea Alejandra Concheyro, Graciela application/pdf http://hdl.handle.net/11336/3097 eng eng Asociacion Paleontologica Argentina info:eu-repo/semantics/altIdentifier/url/http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/588 info:eu-repo/semantics/altIdentifier/ark/10.5710/AmGh.7.2.2013.588 info:eu-repo/semantics/altIdentifier/url/http://dx.doi.com/10.5710/AmGh.7.2.2013.588 http://hdl.handle.net/11336/3097 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ FORAMINIFERA DIAMICTITE CENOZOIC ANTARCTICA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet 2024-10-04T09:34:04Z Abstract. Foraminiferal assemblages recovered from Cape Lamb sediments on Vega Island are examined and illustrated herein. The foraminifera were discovered in Cenozoic debris and palagonitic breccia lithofacies that crop out at the southwestern tip of Cape Lamb. Among all the Cenozoic diamictite deposits recognized in this island, the studied sediments are the youngest and the most fossiliferous. Pectinids, brachiopods, and microfaunas are exceptionally well preserved and indicate little or no transport. The foraminiferal assemblage is dominated by infaunal species, with the most abundant including Globocassidulina biora, Cribroelphidium sp. aff. E. excavatum, and Cassidulinoides parkerianus, and the epifaunal Cibicides refulgens. These foraminifera suggest a normal inner shelf marine environment. Microfossils and macrofauna, stratigraphical evidence observed in the field and published isotopic ages from the nearby Cape Lamb suggest a Pleistocene age for this deposit. Resumen. Foraminíferos del Cenozoico Tardío, Cabo Lamb, Isla Vega, Península Antártica. Se examina e ilustra la microfauna de foraminíferos recuperada de sedimentitas del Cabo Lamb, Isla Vega. La asociación estudiada se halló en una acumulación cenozoica compuesta por fragmentos rocosos y brechas palagoníticas, que aflora en el extremo sudoeste del cabo Lamb. Estas sedimentitas, son las diamictitas cenozoicas más jóvenes y más fosilíferas reconocidas en la isla y al presentar una excepcional preservación de pectínidos y braquiópodos, llamaron la atención como probables hospedadoras de microfaunas que habrían sufrido poco transporte. La asociación de foraminíferos es dominada por especies infaunales como Globocassidulina biora, Cribroelphidium sp. aff. E. excavatum y Cas- sidulinoides parkerianus, y el epifaunal Cibicides refulgens. Los foraminíferos sugieren un ambiente marino normal de plataforma interna. microfósiles, macrofauna, evidencias estratigráficas que surgen de las observaciones de campo y edades isotópicas obtenidas para depósitos muy ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Antártica Vega Island CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula cabo Lamb ENVELOPE(-60.800,-60.800,-73.683,-73.683) Cape Lamb ENVELOPE(-57.621,-57.621,-63.909,-63.909) isla Vega ENVELOPE(-57.500,-57.500,-63.833,-63.833) Vega Island ENVELOPE(-57.500,-57.500,-63.833,-63.833)
spellingShingle FORAMINIFERA
DIAMICTITE
CENOZOIC
ANTARCTICA
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
Carames, Andrea Alejandra
Concheyro, Graciela
Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula
title Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula
title_full Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula
title_fullStr Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula
title_full_unstemmed Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula
title_short Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula
title_sort late cenozoic foraminifera from diamictites of cape lamb, vega island, antarctic peninsula
topic FORAMINIFERA
DIAMICTITE
CENOZOIC
ANTARCTICA
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic_facet FORAMINIFERA
DIAMICTITE
CENOZOIC
ANTARCTICA
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
url http://hdl.handle.net/11336/3097