Discovery ofpeperites on Marambio Island, Antarctica, with considerations of their emplacement

The finding of peperite breccias on Marambio Island allows to confirm the existence of at least two different pulses in the instrusion of basaltic dykes within the James Ross Island Volcanic Group. Two important bodies of peperites were recognized at Filo Negro and Geoantar hill. They were formed by...

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Bibliographic Details
Main Authors: Caselli, A.T., Massaferro, G.L.
Format: Journal/Newspaper
Language:unknown
Subjects:
basalt
breccia
dike
Argentina
Antarc*
Antarctica
James Ross Island
Ross Island
Online Access:https://hdl.handle.net/20.500.12110/paper_00044822_v52_n3_p400_Caselli
id ftunibueairesbd:todo:paper_00044822_v52_n3_p400_Caselli
record_format openpolar
spelling ftunibueairesbd:todo:paper_00044822_v52_n3_p400_Caselli 2023-10-29T02:32:15+01:00 Discovery ofpeperites on Marambio Island, Antarctica, with considerations of their emplacement Caselli, A.T. Massaferro, G.L. https://hdl.handle.net/20.500.12110/paper_00044822_v52_n3_p400_Caselli unknown http://hdl.handle.net/20.500.12110/paper_00044822_v52_n3_p400_Caselli info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar basalt breccia dike Argentina JOUR ftunibueairesbd https://doi.org/20.500.12110/paper_00044822_v52_n3_p400_Caselli 2023-10-05T01:58:40Z The finding of peperite breccias on Marambio Island allows to confirm the existence of at least two different pulses in the instrusion of basaltic dykes within the James Ross Island Volcanic Group. Two important bodies of peperites were recognized at Filo Negro and Geoantar hill. They were formed by the intrusion of basaltic dykes in the unconsolidated Paleogene sediments of Sobral Formation. The breccias are composed of vesicular glassy fragments, and volcanic and sedimentary lithic constituents in a sand matrix. The intrusions were probably emplaced at very shallow depth and are possibly related to a younger volcanic pulse, dated at 1.3 Ma. © 1997 Asociaciôn Geolôgica Argentina. Fil:Caselli, A.T. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Massaferro, G.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Journal/Newspaper Antarc* Antarctica James Ross Island Ross Island Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
institution Open Polar
collection Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
op_collection_id ftunibueairesbd
language unknown
topic basalt
breccia
dike
Argentina
spellingShingle basalt
breccia
dike
Argentina
Caselli, A.T.
Massaferro, G.L.
Discovery ofpeperites on Marambio Island, Antarctica, with considerations of their emplacement
topic_facet basalt
breccia
dike
Argentina
description The finding of peperite breccias on Marambio Island allows to confirm the existence of at least two different pulses in the instrusion of basaltic dykes within the James Ross Island Volcanic Group. Two important bodies of peperites were recognized at Filo Negro and Geoantar hill. They were formed by the intrusion of basaltic dykes in the unconsolidated Paleogene sediments of Sobral Formation. The breccias are composed of vesicular glassy fragments, and volcanic and sedimentary lithic constituents in a sand matrix. The intrusions were probably emplaced at very shallow depth and are possibly related to a younger volcanic pulse, dated at 1.3 Ma. © 1997 Asociaciôn Geolôgica Argentina. Fil:Caselli, A.T. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Massaferro, G.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
format Journal/Newspaper
author Caselli, A.T.
Massaferro, G.L.
author_facet Caselli, A.T.
Massaferro, G.L.
author_sort Caselli, A.T.
title Discovery ofpeperites on Marambio Island, Antarctica, with considerations of their emplacement
title_short Discovery ofpeperites on Marambio Island, Antarctica, with considerations of their emplacement
title_full Discovery ofpeperites on Marambio Island, Antarctica, with considerations of their emplacement
title_fullStr Discovery ofpeperites on Marambio Island, Antarctica, with considerations of their emplacement
title_full_unstemmed Discovery ofpeperites on Marambio Island, Antarctica, with considerations of their emplacement
title_sort discovery ofpeperites on marambio island, antarctica, with considerations of their emplacement
url https://hdl.handle.net/20.500.12110/paper_00044822_v52_n3_p400_Caselli
genre Antarc*
Antarctica
James Ross Island
Ross Island
genre_facet Antarc*
Antarctica
James Ross Island
Ross Island
op_relation http://hdl.handle.net/20.500.12110/paper_00044822_v52_n3_p400_Caselli
op_rights info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
op_doi https://doi.org/20.500.12110/paper_00044822_v52_n3_p400_Caselli
_version_ 1781053465526534144

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