The volcanic record in the ANDRILL McMurdo Ice Shelf AND-1B drill core
The 1285 m thick MIS core offers an invaluable opportunity to obtain a detailed record of volcanism in McMurdo Sound. Volcanic stratigraphy and preliminary petrologic data on volcanic rocks in the AND-1B core are reported here. Remarkable volcanic deposits include: a) a phonolitic pumice layer found...
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DigitalCommons@University of Nebraska - Lincoln
2007
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ftunivnebraskali:oai:digitalcommons.unl.edu:andrillrespub-1003 2023-11-12T04:18:55+01:00 The volcanic record in the ANDRILL McMurdo Ice Shelf AND-1B drill core Pompilio, M. Kyle, P. Wilch, T. Dunbar, N. ANDRILL-MIS Project Science Team 2007-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/andrillrespub/4 https://digitalcommons.unl.edu/context/andrillrespub/article/1003/viewcontent/Pompilio_USGSOF_2007_Volcanic_record.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/andrillrespub/4 https://digitalcommons.unl.edu/context/andrillrespub/article/1003/viewcontent/Pompilio_USGSOF_2007_Volcanic_record.pdf ANDRILL Research and Publications Environmental Indicators and Impact Assessment text 2007 ftunivnebraskali 2023-10-30T10:48:43Z The 1285 m thick MIS core offers an invaluable opportunity to obtain a detailed record of volcanism in McMurdo Sound. Volcanic stratigraphy and preliminary petrologic data on volcanic rocks in the AND-1B core are reported here. Remarkable volcanic deposits include: a) a phonolitic pumice layer found at ≈85 mbsf which is not correlated to any known vent onshore; b) a black well sorted volcanic sands succession (132.83 to 146.79 mbsf) interpreted as being derived mainly from subaerial Hawaiian/Strombolian eruptions; c) a thick volcanic succession in the middle part of the core with an interbedded submarine lava flow. The flow may be derived from a nearby (≈4 km) vent on the seafloor according to average length of the lavas with similar composition; d) deeply altered tuffs and minor sandstone below 1220 mbsf. Diagenesis and intense alteration at depths >600 mbsf, hamper the interpretation of magma evolution and provenance. Text Ice Shelf McMurdo Ice Shelf McMurdo Sound University of Nebraska-Lincoln: DigitalCommons@UNL McMurdo Sound McMurdo Ice Shelf ENVELOPE(166.500,166.500,-78.000,-78.000) |
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Open Polar |
collection |
University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
topic |
Environmental Indicators and Impact Assessment |
spellingShingle |
Environmental Indicators and Impact Assessment Pompilio, M. Kyle, P. Wilch, T. Dunbar, N. ANDRILL-MIS Project Science Team The volcanic record in the ANDRILL McMurdo Ice Shelf AND-1B drill core |
topic_facet |
Environmental Indicators and Impact Assessment |
description |
The 1285 m thick MIS core offers an invaluable opportunity to obtain a detailed record of volcanism in McMurdo Sound. Volcanic stratigraphy and preliminary petrologic data on volcanic rocks in the AND-1B core are reported here. Remarkable volcanic deposits include: a) a phonolitic pumice layer found at ≈85 mbsf which is not correlated to any known vent onshore; b) a black well sorted volcanic sands succession (132.83 to 146.79 mbsf) interpreted as being derived mainly from subaerial Hawaiian/Strombolian eruptions; c) a thick volcanic succession in the middle part of the core with an interbedded submarine lava flow. The flow may be derived from a nearby (≈4 km) vent on the seafloor according to average length of the lavas with similar composition; d) deeply altered tuffs and minor sandstone below 1220 mbsf. Diagenesis and intense alteration at depths >600 mbsf, hamper the interpretation of magma evolution and provenance. |
format |
Text |
author |
Pompilio, M. Kyle, P. Wilch, T. Dunbar, N. ANDRILL-MIS Project Science Team |
author_facet |
Pompilio, M. Kyle, P. Wilch, T. Dunbar, N. ANDRILL-MIS Project Science Team |
author_sort |
Pompilio, M. |
title |
The volcanic record in the ANDRILL McMurdo Ice Shelf AND-1B drill core |
title_short |
The volcanic record in the ANDRILL McMurdo Ice Shelf AND-1B drill core |
title_full |
The volcanic record in the ANDRILL McMurdo Ice Shelf AND-1B drill core |
title_fullStr |
The volcanic record in the ANDRILL McMurdo Ice Shelf AND-1B drill core |
title_full_unstemmed |
The volcanic record in the ANDRILL McMurdo Ice Shelf AND-1B drill core |
title_sort |
volcanic record in the andrill mcmurdo ice shelf and-1b drill core |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2007 |
url |
https://digitalcommons.unl.edu/andrillrespub/4 https://digitalcommons.unl.edu/context/andrillrespub/article/1003/viewcontent/Pompilio_USGSOF_2007_Volcanic_record.pdf |
long_lat |
ENVELOPE(166.500,166.500,-78.000,-78.000) |
geographic |
McMurdo Sound McMurdo Ice Shelf |
geographic_facet |
McMurdo Sound McMurdo Ice Shelf |
genre |
Ice Shelf McMurdo Ice Shelf McMurdo Sound |
genre_facet |
Ice Shelf McMurdo Ice Shelf McMurdo Sound |
op_source |
ANDRILL Research and Publications |
op_relation |
https://digitalcommons.unl.edu/andrillrespub/4 https://digitalcommons.unl.edu/context/andrillrespub/article/1003/viewcontent/Pompilio_USGSOF_2007_Volcanic_record.pdf |
_version_ |
1782335429310152704 |