Englacial tephras of East Antarctica
Driven by successful achievements in recovering high-resolution ice records of climate and atmospheric composition through the Late Quaternary, new ice-tephra sequences from various sites of the East Antarctic Ice Sheet (EAIS) have been studied in the last two decades spanning an age range of a few...
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ftdatacite:10.6084/m9.figshare.c.5212574.v1 2023-05-15T13:44:20+02:00 Englacial tephras of East Antarctica Biancamaria Narcisi Petit, Jean Robert 2020 https://dx.doi.org/10.6084/m9.figshare.c.5212574.v1 https://geolsoc.figshare.com/collections/Englacial_tephras_of_East_Antarctica/5212574/1 unknown Geological Society of London https://dx.doi.org/10.1144/m55-2018-86 https://dx.doi.org/10.6084/m9.figshare.c.5212574 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Geology FOS Earth and related environmental sciences Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.5212574.v1 https://doi.org/10.1144/m55-2018-86 https://doi.org/10.6084/m9.figshare.c.5212574 2021-11-05T12:55:41Z Driven by successful achievements in recovering high-resolution ice records of climate and atmospheric composition through the Late Quaternary, new ice-tephra sequences from various sites of the East Antarctic Ice Sheet (EAIS) have been studied in the last two decades spanning an age range of a few centuries to 800 ka. The tephrostratigraphic framework for inner EAIS, based upon ash occurrence in three multi-kilometre deep ice cores, shows that the South Sandwich Islands represent a major source for tephra, highlighting the major role in the ash dispersal played by clockwise circum-Antarctic atmospheric circulation penetrating the Antarctic continent. Tephra records from the eastern periphery of EAIS instead are obviously influenced by explosive activity of the nearby Antarctic rift provinces. These tephra inventories have provided a fundamental complement of the near vent volcanic record, in terms both of frequency/chronology of explosive volcanism and of magma chemical evolution through time. Despite recent progress, current data are still sparse. There is a need for further tephra studies to collect data from unexplored EAIS sectors, along with extending the tephra inventory back in time. Ongoing international palaeoclimatic initiatives of ice-core drilling could represent a significant motivation for the tephra community and for Quaternary Antarctic volcanologists. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet South Sandwich Islands DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic East Antarctica Sandwich Islands South Sandwich Islands East Antarctic Ice Sheet |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geology FOS Earth and related environmental sciences |
spellingShingle |
Geology FOS Earth and related environmental sciences Biancamaria Narcisi Petit, Jean Robert Englacial tephras of East Antarctica |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
Driven by successful achievements in recovering high-resolution ice records of climate and atmospheric composition through the Late Quaternary, new ice-tephra sequences from various sites of the East Antarctic Ice Sheet (EAIS) have been studied in the last two decades spanning an age range of a few centuries to 800 ka. The tephrostratigraphic framework for inner EAIS, based upon ash occurrence in three multi-kilometre deep ice cores, shows that the South Sandwich Islands represent a major source for tephra, highlighting the major role in the ash dispersal played by clockwise circum-Antarctic atmospheric circulation penetrating the Antarctic continent. Tephra records from the eastern periphery of EAIS instead are obviously influenced by explosive activity of the nearby Antarctic rift provinces. These tephra inventories have provided a fundamental complement of the near vent volcanic record, in terms both of frequency/chronology of explosive volcanism and of magma chemical evolution through time. Despite recent progress, current data are still sparse. There is a need for further tephra studies to collect data from unexplored EAIS sectors, along with extending the tephra inventory back in time. Ongoing international palaeoclimatic initiatives of ice-core drilling could represent a significant motivation for the tephra community and for Quaternary Antarctic volcanologists. |
format |
Article in Journal/Newspaper |
author |
Biancamaria Narcisi Petit, Jean Robert |
author_facet |
Biancamaria Narcisi Petit, Jean Robert |
author_sort |
Biancamaria Narcisi |
title |
Englacial tephras of East Antarctica |
title_short |
Englacial tephras of East Antarctica |
title_full |
Englacial tephras of East Antarctica |
title_fullStr |
Englacial tephras of East Antarctica |
title_full_unstemmed |
Englacial tephras of East Antarctica |
title_sort |
englacial tephras of east antarctica |
publisher |
Geological Society of London |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5212574.v1 https://geolsoc.figshare.com/collections/Englacial_tephras_of_East_Antarctica/5212574/1 |
geographic |
Antarctic The Antarctic East Antarctica Sandwich Islands South Sandwich Islands East Antarctic Ice Sheet |
geographic_facet |
Antarctic The Antarctic East Antarctica Sandwich Islands South Sandwich Islands East Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet South Sandwich Islands |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet South Sandwich Islands |
op_relation |
https://dx.doi.org/10.1144/m55-2018-86 https://dx.doi.org/10.6084/m9.figshare.c.5212574 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5212574.v1 https://doi.org/10.1144/m55-2018-86 https://doi.org/10.6084/m9.figshare.c.5212574 |
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1766200351832145920 |