Early Miocene volcanic activity and paleoenvironment conditions recorded in tephra layers of the AND-2A core (southern McMurdo Sound, Antarctica)
The ANtarctic geological DRILLing program (ANDRILL) successfully recovered 1138.54 m of core from drillhole, AND-2A, in the Ross Sea sediments (Antarctica). The core is composed of terrigenous claystones, siltstones, sandstones, conglomerates, breccias, and diamictites with abundant volcanic materia...
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Geological Society of America
2012
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Online Access: | http://hdl.handle.net/2122/8254 https://doi.org/10.1130/GES00754.1 |
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ftingv:oai:www.earth-prints.org:2122/8254 2023-05-15T14:01:37+02:00 Early Miocene volcanic activity and paleoenvironment conditions recorded in tephra layers of the AND-2A core (southern McMurdo Sound, Antarctica) Di Roberto, A. Del Carlo, P. Rocchi, S. Panter, K. S. Di Roberto, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia Del Carlo, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia Rocchi, S.; Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy Panter, K. S.; Department of Geology, Bowling Green State University, Bowling Green, OH, 43403, USA Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy Department of Geology, Bowling Green State University, Bowling Green, OH, 43403, USA 2012 http://hdl.handle.net/2122/8254 https://doi.org/10.1130/GES00754.1 en eng Geological Society of America Geosphere /8 (2012) 1553-040X http://hdl.handle.net/2122/8254 doi:10.1130/GES00754.1 open Antarctica Volcaniclastic sediments Paleoenvironment Mt. Morning Victoria Land Basin 02. Cryosphere::02.03. Ice cores::02.03.05. Paleoclimate 04. Solid Earth::04.04. Geology::04.04.08. Sediments: dating processes transport 04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks article 2012 ftingv https://doi.org/10.1130/GES00754.1 2022-07-29T06:06:22Z The ANtarctic geological DRILLing program (ANDRILL) successfully recovered 1138.54 m of core from drillhole, AND-2A, in the Ross Sea sediments (Antarctica). The core is composed of terrigenous claystones, siltstones, sandstones, conglomerates, breccias, and diamictites with abundant volcanic material. In this work we present sedimentological, morphoscopic, petrographic, and geochemical data on pyroclasts recovered from core AND-2A, which provide insights on eruption styles, volcanic sources, and environments of deposition. One pyroclastic fall deposit, 12 resedimented volcaniclastic deposits and 14 volcanogenic sedimentary deposits record a history of intense explosive volcanic activity in southern Victoria Land during the Early Miocene. Tephra were ejected during Subplinian and Plinian eruptions fed by trachytic to rhyolitic magmas and during Strombolian to Hawaiian eruptions fed by basaltic to mugearitic magmas in submarine/subglacial to subaerial environments. The long-lived Mt. Morning eruptive centre, located c. 80 km south of the drillsite, was recognized as the probable volcanic source for these products on the basis of volcanological, geochemical, and age constraints. The study of tephra in the AND-2A core provides important paleoenvironment information by revealing that the deposition of primary and moderately reworked tephra occurred in a proglacial setting under generally open water marine conditions. Published 1342-1355 3.7. Dinamica del clima e dell'oceano JCR Journal partially_open Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Sound Ross Sea Victoria Land Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Antarctic McMurdo Sound Ross Sea The Antarctic Victoria Land Geosphere 8 6 1342 |
institution |
Open Polar |
collection |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftingv |
language |
English |
topic |
Antarctica Volcaniclastic sediments Paleoenvironment Mt. Morning Victoria Land Basin 02. Cryosphere::02.03. Ice cores::02.03.05. Paleoclimate 04. Solid Earth::04.04. Geology::04.04.08. Sediments: dating processes transport 04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks |
spellingShingle |
Antarctica Volcaniclastic sediments Paleoenvironment Mt. Morning Victoria Land Basin 02. Cryosphere::02.03. Ice cores::02.03.05. Paleoclimate 04. Solid Earth::04.04. Geology::04.04.08. Sediments: dating processes transport 04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks Di Roberto, A. Del Carlo, P. Rocchi, S. Panter, K. S. Early Miocene volcanic activity and paleoenvironment conditions recorded in tephra layers of the AND-2A core (southern McMurdo Sound, Antarctica) |
topic_facet |
Antarctica Volcaniclastic sediments Paleoenvironment Mt. Morning Victoria Land Basin 02. Cryosphere::02.03. Ice cores::02.03.05. Paleoclimate 04. Solid Earth::04.04. Geology::04.04.08. Sediments: dating processes transport 04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks |
description |
The ANtarctic geological DRILLing program (ANDRILL) successfully recovered 1138.54 m of core from drillhole, AND-2A, in the Ross Sea sediments (Antarctica). The core is composed of terrigenous claystones, siltstones, sandstones, conglomerates, breccias, and diamictites with abundant volcanic material. In this work we present sedimentological, morphoscopic, petrographic, and geochemical data on pyroclasts recovered from core AND-2A, which provide insights on eruption styles, volcanic sources, and environments of deposition. One pyroclastic fall deposit, 12 resedimented volcaniclastic deposits and 14 volcanogenic sedimentary deposits record a history of intense explosive volcanic activity in southern Victoria Land during the Early Miocene. Tephra were ejected during Subplinian and Plinian eruptions fed by trachytic to rhyolitic magmas and during Strombolian to Hawaiian eruptions fed by basaltic to mugearitic magmas in submarine/subglacial to subaerial environments. The long-lived Mt. Morning eruptive centre, located c. 80 km south of the drillsite, was recognized as the probable volcanic source for these products on the basis of volcanological, geochemical, and age constraints. The study of tephra in the AND-2A core provides important paleoenvironment information by revealing that the deposition of primary and moderately reworked tephra occurred in a proglacial setting under generally open water marine conditions. Published 1342-1355 3.7. Dinamica del clima e dell'oceano JCR Journal partially_open |
author2 |
Di Roberto, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia Del Carlo, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia Rocchi, S.; Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy Panter, K. S.; Department of Geology, Bowling Green State University, Bowling Green, OH, 43403, USA Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy Department of Geology, Bowling Green State University, Bowling Green, OH, 43403, USA |
format |
Article in Journal/Newspaper |
author |
Di Roberto, A. Del Carlo, P. Rocchi, S. Panter, K. S. |
author_facet |
Di Roberto, A. Del Carlo, P. Rocchi, S. Panter, K. S. |
author_sort |
Di Roberto, A. |
title |
Early Miocene volcanic activity and paleoenvironment conditions recorded in tephra layers of the AND-2A core (southern McMurdo Sound, Antarctica) |
title_short |
Early Miocene volcanic activity and paleoenvironment conditions recorded in tephra layers of the AND-2A core (southern McMurdo Sound, Antarctica) |
title_full |
Early Miocene volcanic activity and paleoenvironment conditions recorded in tephra layers of the AND-2A core (southern McMurdo Sound, Antarctica) |
title_fullStr |
Early Miocene volcanic activity and paleoenvironment conditions recorded in tephra layers of the AND-2A core (southern McMurdo Sound, Antarctica) |
title_full_unstemmed |
Early Miocene volcanic activity and paleoenvironment conditions recorded in tephra layers of the AND-2A core (southern McMurdo Sound, Antarctica) |
title_sort |
early miocene volcanic activity and paleoenvironment conditions recorded in tephra layers of the and-2a core (southern mcmurdo sound, antarctica) |
publisher |
Geological Society of America |
publishDate |
2012 |
url |
http://hdl.handle.net/2122/8254 https://doi.org/10.1130/GES00754.1 |
geographic |
Antarctic McMurdo Sound Ross Sea The Antarctic Victoria Land |
geographic_facet |
Antarctic McMurdo Sound Ross Sea The Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctica McMurdo Sound Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Sound Ross Sea Victoria Land |
op_relation |
Geosphere /8 (2012) 1553-040X http://hdl.handle.net/2122/8254 doi:10.1130/GES00754.1 |
op_rights |
open |
op_doi |
https://doi.org/10.1130/GES00754.1 |
container_title |
Geosphere |
container_volume |
8 |
container_issue |
6 |
container_start_page |
1342 |
_version_ |
1766271557606309888 |