Controlling influence of water and ice on eruptive style and edifice construction in the Mount Melbourne Volcanic Field (northern Victoria Land, Antarctica)
The Mount Melbourne Volcanic Field (MMVF) is part of the West Antarctic Rift System, one of Earth’s largest intra-continental rift zones. It contains numerous small, compositionally diverse (alkali basalt–benmoreite) flank and satellite vents of Late Miocene–Pliocene age (≤12.50 Ma; mainly less than...
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2023
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Online Access: | https://doi.org/10.3389/feart.2022.1061515 https://doaj.org/article/e967ab6483e04efa849c87a87b09c764 |
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ftdoajarticles:oai:doaj.org/article:e967ab6483e04efa849c87a87b09c764 2023-05-15T13:33:50+02:00 Controlling influence of water and ice on eruptive style and edifice construction in the Mount Melbourne Volcanic Field (northern Victoria Land, Antarctica) J. L. Smellie S. Rocchi G. Di Vincenzo 2023-01-01T00:00:00Z https://doi.org/10.3389/feart.2022.1061515 https://doaj.org/article/e967ab6483e04efa849c87a87b09c764 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2022.1061515/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.1061515 https://doaj.org/article/e967ab6483e04efa849c87a87b09c764 Frontiers in Earth Science, Vol 10 (2023) glaciovolcanic tuff cone megapillow A'ā lava lava-fed delta tuya Science Q article 2023 ftdoajarticles https://doi.org/10.3389/feart.2022.1061515 2023-01-15T01:25:01Z The Mount Melbourne Volcanic Field (MMVF) is part of the West Antarctic Rift System, one of Earth’s largest intra-continental rift zones. It contains numerous small, compositionally diverse (alkali basalt–benmoreite) flank and satellite vents of Late Miocene–Pliocene age (≤12.50 Ma; mainly less than 2.5 Ma). They demonstrate a wide range of morphologies and eruptive mechanisms despite overlapping compositions and elevations, and they occur in a relatively small area surrounding the active Mount Melbourne stratovolcano. The volcanic outcrops fall into several main categories based on eruptive style: scoria cones, tuff cones, megapillow complexes, and shield volcanoes. Using the analysis of lithofacies and appraisal of the internal architectures of the outcrops, we have interpreted the likely eruptive setting for each center and examined the links between the environmental conditions and the resulting volcanic edifice types. Previous investigations assumed a glacial setting for most of the centers but without giving supporting evidence. We demonstrate that the local contemporary environmental conditions exerted a dominant control on the resulting volcanic edifices (i.e., the presence or absence of water, including ice or snow). The scoria cones erupted under dry subaerial conditions. Products of highly explosive hydrovolcanic eruptions are represented by tuff cones. The water involved was mainly glacial (meltwater) but may have been marine in a few examples, based on a comparison of the contrasting internal architectures of tuff cones erupted in confined (glacial) and unconfined (marine, lacustrine) settings. One of the glaciovolcanic tuff cones ceased activity shortly after it began transitioning to a tuya. The megapillow complexes are highly distinctive and have not been previously recognized in glaciovolcanic successions. They are subglacial effusive sequences emplaced as interconnected megapillows, lobes, and thick simple sheet lavas. They are believed to have erupted at moderately high discharge and reduced ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Victoria Land Directory of Open Access Journals: DOAJ Articles Antarctic Cones The ENVELOPE(78.344,78.344,-68.635,-68.635) Cones, The ENVELOPE(78.344,78.344,-68.635,-68.635) Mount Melbourne ENVELOPE(164.700,164.700,-74.350,-74.350) Victoria Land Frontiers in Earth Science 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
glaciovolcanic tuff cone megapillow A'ā lava lava-fed delta tuya Science Q |
spellingShingle |
glaciovolcanic tuff cone megapillow A'ā lava lava-fed delta tuya Science Q J. L. Smellie S. Rocchi G. Di Vincenzo Controlling influence of water and ice on eruptive style and edifice construction in the Mount Melbourne Volcanic Field (northern Victoria Land, Antarctica) |
topic_facet |
glaciovolcanic tuff cone megapillow A'ā lava lava-fed delta tuya Science Q |
description |
The Mount Melbourne Volcanic Field (MMVF) is part of the West Antarctic Rift System, one of Earth’s largest intra-continental rift zones. It contains numerous small, compositionally diverse (alkali basalt–benmoreite) flank and satellite vents of Late Miocene–Pliocene age (≤12.50 Ma; mainly less than 2.5 Ma). They demonstrate a wide range of morphologies and eruptive mechanisms despite overlapping compositions and elevations, and they occur in a relatively small area surrounding the active Mount Melbourne stratovolcano. The volcanic outcrops fall into several main categories based on eruptive style: scoria cones, tuff cones, megapillow complexes, and shield volcanoes. Using the analysis of lithofacies and appraisal of the internal architectures of the outcrops, we have interpreted the likely eruptive setting for each center and examined the links between the environmental conditions and the resulting volcanic edifice types. Previous investigations assumed a glacial setting for most of the centers but without giving supporting evidence. We demonstrate that the local contemporary environmental conditions exerted a dominant control on the resulting volcanic edifices (i.e., the presence or absence of water, including ice or snow). The scoria cones erupted under dry subaerial conditions. Products of highly explosive hydrovolcanic eruptions are represented by tuff cones. The water involved was mainly glacial (meltwater) but may have been marine in a few examples, based on a comparison of the contrasting internal architectures of tuff cones erupted in confined (glacial) and unconfined (marine, lacustrine) settings. One of the glaciovolcanic tuff cones ceased activity shortly after it began transitioning to a tuya. The megapillow complexes are highly distinctive and have not been previously recognized in glaciovolcanic successions. They are subglacial effusive sequences emplaced as interconnected megapillows, lobes, and thick simple sheet lavas. They are believed to have erupted at moderately high discharge and reduced ... |
format |
Article in Journal/Newspaper |
author |
J. L. Smellie S. Rocchi G. Di Vincenzo |
author_facet |
J. L. Smellie S. Rocchi G. Di Vincenzo |
author_sort |
J. L. Smellie |
title |
Controlling influence of water and ice on eruptive style and edifice construction in the Mount Melbourne Volcanic Field (northern Victoria Land, Antarctica) |
title_short |
Controlling influence of water and ice on eruptive style and edifice construction in the Mount Melbourne Volcanic Field (northern Victoria Land, Antarctica) |
title_full |
Controlling influence of water and ice on eruptive style and edifice construction in the Mount Melbourne Volcanic Field (northern Victoria Land, Antarctica) |
title_fullStr |
Controlling influence of water and ice on eruptive style and edifice construction in the Mount Melbourne Volcanic Field (northern Victoria Land, Antarctica) |
title_full_unstemmed |
Controlling influence of water and ice on eruptive style and edifice construction in the Mount Melbourne Volcanic Field (northern Victoria Land, Antarctica) |
title_sort |
controlling influence of water and ice on eruptive style and edifice construction in the mount melbourne volcanic field (northern victoria land, antarctica) |
publisher |
Frontiers Media S.A. |
publishDate |
2023 |
url |
https://doi.org/10.3389/feart.2022.1061515 https://doaj.org/article/e967ab6483e04efa849c87a87b09c764 |
long_lat |
ENVELOPE(78.344,78.344,-68.635,-68.635) ENVELOPE(78.344,78.344,-68.635,-68.635) ENVELOPE(164.700,164.700,-74.350,-74.350) |
geographic |
Antarctic Cones The Cones, The Mount Melbourne Victoria Land |
geographic_facet |
Antarctic Cones The Cones, The Mount Melbourne Victoria Land |
genre |
Antarc* Antarctic Antarctica Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Victoria Land |
op_source |
Frontiers in Earth Science, Vol 10 (2023) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2022.1061515/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.1061515 https://doaj.org/article/e967ab6483e04efa849c87a87b09c764 |
op_doi |
https://doi.org/10.3389/feart.2022.1061515 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
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1766046446160707584 |