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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ftunibueairesbd:paper:paper_00044822_v59_n3_p495_Caselli 2023-05-15T13:50:11+02:00 Recent hydrovolcanic deposits with evidence of magmatic immiscibility on Deception Island, Antarctica 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v59_n3_p495_Caselli https://hdl.handle.net/20.500.12110/paper_00044822_v59_n3_p495_Caselli unknown https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v59_n3_p495_Caselli http://hdl.handle.net/20.500.12110/paper_00044822_v59_n3_p495_Caselli Antarctica Deception Island Historical eruptions Hydrovolcanism immiscibility magma volcanic eruption Arctic and Antarctic South Shetland Islands World 2004 ftunibueairesbd https://doi.org/20.500.12110/paper_00044822_v59_n3_p495_Caselli 2023-02-16T02:23:13Z 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. Other/Unknown Material Antarc* Antarctic Antarctica Arctic Deception Island South Shetland Islands Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) Antarctic Arctic Argentina Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) South Shetland Islands |
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 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. |
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 |
publishDate |
2004 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v59_n3_p495_Caselli https://hdl.handle.net/20.500.12110/paper_00044822_v59_n3_p495_Caselli |
long_lat |
ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
geographic |
Antarctic Arctic Argentina Deception Island South Shetland Islands |
geographic_facet |
Antarctic Arctic Argentina Deception Island South Shetland Islands |
genre |
Antarc* Antarctic Antarctica Arctic Deception Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctica Arctic Deception Island South Shetland Islands |
op_relation |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v59_n3_p495_Caselli http://hdl.handle.net/20.500.12110/paper_00044822_v59_n3_p495_Caselli |
op_doi |
https://doi.org/20.500.12110/paper_00044822_v59_n3_p495_Caselli |
_version_ |
1766253176940396544 |