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

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 reco...

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Autores principales: Carames, Andrea Alejandra, Concheyro, Graciela Andrea
Publicado: 2013
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Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v50_n1_p114_Carames
http://hdl.handle.net/20.500.12110/paper_00027014_v50_n1_p114_Carames
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spelling paper:paper_00027014_v50_n1_p114_Carames2023-06-08T14:22:26Z Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula Carames, Andrea Alejandra Concheyro, Graciela Andrea Antarctica Diamictite Foraminifera James ross island basin Late Cenozoic biostratigraphy brachiopod breccia Cenozoic continental shelf diamictite epifauna foraminifera lithofacies marine environment microfossil paleobiology Antarctic Peninsula Antarctica James Ross Island Vega Island West Antarctica 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. Fil:Caramés, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Concheyro, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v50_n1_p114_Carames http://hdl.handle.net/20.500.12110/paper_00027014_v50_n1_p114_Carames
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Antarctica
Diamictite
Foraminifera
James ross island basin
Late Cenozoic
biostratigraphy
brachiopod
breccia
Cenozoic
continental shelf
diamictite
epifauna
foraminifera
lithofacies
marine environment
microfossil
paleobiology
Antarctic Peninsula
Antarctica
James Ross Island
Vega Island
West Antarctica
spellingShingle Antarctica
Diamictite
Foraminifera
James ross island basin
Late Cenozoic
biostratigraphy
brachiopod
breccia
Cenozoic
continental shelf
diamictite
epifauna
foraminifera
lithofacies
marine environment
microfossil
paleobiology
Antarctic Peninsula
Antarctica
James Ross Island
Vega Island
West Antarctica
Carames, Andrea Alejandra
Concheyro, Graciela Andrea
Late Cenozoic Foraminifera from diamictites of Cape Lamb, Vega Island, Antarctic Peninsula
topic_facet Antarctica
Diamictite
Foraminifera
James ross island basin
Late Cenozoic
biostratigraphy
brachiopod
breccia
Cenozoic
continental shelf
diamictite
epifauna
foraminifera
lithofacies
marine environment
microfossil
paleobiology
Antarctic Peninsula
Antarctica
James Ross Island
Vega Island
West Antarctica
description 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.
author Carames, Andrea Alejandra
Concheyro, Graciela Andrea
author_facet Carames, Andrea Alejandra
Concheyro, Graciela Andrea
author_sort Carames, Andrea Alejandra
title 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_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_sort late cenozoic foraminifera from diamictites of cape lamb, vega island, antarctic peninsula
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v50_n1_p114_Carames
http://hdl.handle.net/20.500.12110/paper_00027014_v50_n1_p114_Carames
work_keys_str_mv AT caramesandreaalejandra latecenozoicforaminiferafromdiamictitesofcapelambvegaislandantarcticpeninsula
AT concheyrogracielaandrea latecenozoicforaminiferafromdiamictitesofcapelambvegaislandantarcticpeninsula
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