Recent hydrovolcanic deposits with evidence of magmatic immiscibility on Deception Island, Antarctica

Outcrops of hydro-volcanic deposits on Deception Island are stratigraphically re-classified. The sequence was assigned to a pre-caldera phase, but it has very different compositional and consolidation characteristics, enabling it to be differentiated and redefined as a new unit. In this paper, it is...

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Bibliographic Details
Main Authors: Caselli, A.T., Agusto, M.R.
Format: Journal/Newspaper
Language:unknown
Subjects:
Antarctica
Deception Island
Historical eruptions
Hydrovolcanism
immiscibility
magma
volcanic eruption
Arctic and Antarctic
South Shetland Islands
World
Antarc*
Antarctic
Arctic
Online Access:https://hdl.handle.net/20.500.12110/paper_00044822_v59_n3_p495_Caselli
id ftunibueairesbd:todo:paper_00044822_v59_n3_p495_Caselli
record_format openpolar
spelling ftunibueairesbd:todo:paper_00044822_v59_n3_p495_Caselli 2023-10-29T02:31:35+01:00 Recent hydrovolcanic deposits with evidence of magmatic immiscibility on Deception Island, Antarctica Caselli, A.T. Agusto, M.R. https://hdl.handle.net/20.500.12110/paper_00044822_v59_n3_p495_Caselli unknown http://hdl.handle.net/20.500.12110/paper_00044822_v59_n3_p495_Caselli info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Antarctica Deception Island Historical eruptions Hydrovolcanism immiscibility magma volcanic eruption Arctic and Antarctic South Shetland Islands World JOUR ftunibueairesbd https://doi.org/20.500.12110/paper_00044822_v59_n3_p495_Caselli 2023-10-05T01:15:51Z Outcrops of hydro-volcanic deposits on Deception Island are stratigraphically re-classified. The sequence was assigned to a pre-caldera phase, but it has very different compositional and consolidation characteristics, enabling it to be differentiated and redefined as a new unit. In this paper, it is stratigraphically relocated as a historical eruption, on the basis of its compositional similarity to ash-falls in Bransfield Basin. The studied deposits are bimodal (basaltic/rhyolitic) implying a relationship with magma immiscibility. The occurrence of more acidic periods would allow relatively more explosive vents with greater particle dispersion to take place. © 2004 Asociación Geológica Argentina. Journal/Newspaper Antarc* Antarctic Antarctica Arctic Deception Island South Shetland Islands 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 Antarctica
Deception Island
Historical eruptions
Hydrovolcanism
immiscibility
magma
volcanic eruption
Arctic and Antarctic
South Shetland Islands
World
spellingShingle Antarctica
Deception Island
Historical eruptions
Hydrovolcanism
immiscibility
magma
volcanic eruption
Arctic and Antarctic
South Shetland Islands
World
Caselli, A.T.
Agusto, M.R.
Recent hydrovolcanic deposits with evidence of magmatic immiscibility on Deception Island, Antarctica
topic_facet Antarctica
Deception Island
Historical eruptions
Hydrovolcanism
immiscibility
magma
volcanic eruption
Arctic and Antarctic
South Shetland Islands
World
description Outcrops of hydro-volcanic deposits on Deception Island are stratigraphically re-classified. The sequence was assigned to a pre-caldera phase, but it has very different compositional and consolidation characteristics, enabling it to be differentiated and redefined as a new unit. In this paper, it is stratigraphically relocated as a historical eruption, on the basis of its compositional similarity to ash-falls in Bransfield Basin. The studied deposits are bimodal (basaltic/rhyolitic) implying a relationship with magma immiscibility. The occurrence of more acidic periods would allow relatively more explosive vents with greater particle dispersion to take place. © 2004 Asociación Geológica Argentina.
format Journal/Newspaper
author Caselli, A.T.
Agusto, M.R.
author_facet Caselli, A.T.
Agusto, M.R.
author_sort Caselli, A.T.
title Recent hydrovolcanic deposits with evidence of magmatic immiscibility on Deception Island, Antarctica
title_short Recent hydrovolcanic deposits with evidence of magmatic immiscibility on Deception Island, Antarctica
title_full Recent hydrovolcanic deposits with evidence of magmatic immiscibility on Deception Island, Antarctica
title_fullStr Recent hydrovolcanic deposits with evidence of magmatic immiscibility on Deception Island, Antarctica
title_full_unstemmed Recent hydrovolcanic deposits with evidence of magmatic immiscibility on Deception Island, Antarctica
title_sort recent hydrovolcanic deposits with evidence of magmatic immiscibility on deception island, antarctica
url https://hdl.handle.net/20.500.12110/paper_00044822_v59_n3_p495_Caselli
genre Antarc*
Antarctic
Antarctica
Arctic
Deception Island
South Shetland Islands
genre_facet Antarc*
Antarctic
Antarctica
Arctic
Deception Island
South Shetland Islands
op_relation http://hdl.handle.net/20.500.12110/paper_00044822_v59_n3_p495_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_v59_n3_p495_Caselli
_version_ 1781052213785788416

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