First marine cryptotephra in Antarctica found in sediments of the western Ross Sea correlates with englacial tephras and climate records
We report the discovery of an important new cryptotephra within marine sediments close to Cape Hallett (northern Victoria Land), in the western Ross Sea, Antarctica. The cryptotephra is fully characterized for its texture, mineralogy and major- and trace-element data obtained on single glass shards....
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Online Access: | http://hdl.handle.net/11368/2965992 https://doi.org/10.1038/s41598-019-47188-3 https://www.nature.com/articles/s41598-019-47188-3 |
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ftunitriestiris:oai:arts.units.it:11368/2965992 2023-05-15T14:13:54+02:00 First marine cryptotephra in Antarctica found in sediments of the western Ross Sea correlates with englacial tephras and climate records Di Roberto A. Colizza E. Del Carlo P. Petrelli M. Finocchiaro F. Kuhn G. Di Roberto, A. Colizza, E. Del Carlo, P. Petrelli, M. Finocchiaro, F. Kuhn, G. 2019 ELETTRONICO http://hdl.handle.net/11368/2965992 https://doi.org/10.1038/s41598-019-47188-3 https://www.nature.com/articles/s41598-019-47188-3 eng eng info:eu-repo/semantics/altIdentifier/pmid/31337844 info:eu-repo/semantics/altIdentifier/wos/WOS:000476718900015 volume:9 issue:1 firstpage:10628 lastpage:10628 numberofpages:1 journal:SCIENTIFIC REPORTS http://hdl.handle.net/11368/2965992 doi:10.1038/s41598-019-47188-3 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85069648384 https://www.nature.com/articles/s41598-019-47188-3 info:eu-repo/semantics/openAccess Antarctica Ross Sea Holocene Sediment Core Cryptotephra info:eu-repo/semantics/article 2019 ftunitriestiris https://doi.org/10.1038/s41598-019-47188-3 2023-04-09T06:18:24Z We report the discovery of an important new cryptotephra within marine sediments close to Cape Hallett (northern Victoria Land), in the western Ross Sea, Antarctica. The cryptotephra is fully characterized for its texture, mineralogy and major- and trace-element data obtained on single glass shards. On the basis of geochemical composition, the cryptotephra is unequivocally correlated with the proximal deposits of an explosive eruption of the poorly known Mount Rittmann volcano, situated in northern Victoria Land. The cryptotephra is also correlated with a widespread tephra layer, which was erupted in 1254 C.E. and is present in numerous ice-cores and blue ice fields across East and West Antarctica. The characteristics of the tephra indicate that it was produced by a prolonged, moderate energy, mostly hydromagmatic eruption. This is the first time that a cryptotephra has been identified in marine sediments of the Ross Sea and in ice cores. It provides an important new and widespread stratigraphical datum with which the continental cryosphere and marine sedimentological records in Antarctica can be correlated. Moreover, from a purely volcanological point of view, the discovery further confirms the occurrence of a long-lasting, significant explosive eruption from Mount Rittmann in historical times that produced abundant widely dispersed fine ash. The study also highlights the inadequacy of current hazard assessments for poorly known volcanoes such as Mount Rittmann, located at high southern latitudes. Article in Journal/Newspaper Antarc* Antarctica Ross Sea Victoria Land West Antarctica Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) Cape Hallett ENVELOPE(170.217,170.217,-72.317,-72.317) Hallett ENVELOPE(170.217,170.217,-72.317,-72.317) Mount Rittmann ENVELOPE(165.500,165.500,-73.450,-73.450) Rittmann ENVELOPE(165.500,165.500,-73.450,-73.450) Ross Sea Victoria Land West Antarctica Scientific Reports 9 1 |
institution |
Open Polar |
collection |
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) |
op_collection_id |
ftunitriestiris |
language |
English |
topic |
Antarctica Ross Sea Holocene Sediment Core Cryptotephra |
spellingShingle |
Antarctica Ross Sea Holocene Sediment Core Cryptotephra Di Roberto A. Colizza E. Del Carlo P. Petrelli M. Finocchiaro F. Kuhn G. First marine cryptotephra in Antarctica found in sediments of the western Ross Sea correlates with englacial tephras and climate records |
topic_facet |
Antarctica Ross Sea Holocene Sediment Core Cryptotephra |
description |
We report the discovery of an important new cryptotephra within marine sediments close to Cape Hallett (northern Victoria Land), in the western Ross Sea, Antarctica. The cryptotephra is fully characterized for its texture, mineralogy and major- and trace-element data obtained on single glass shards. On the basis of geochemical composition, the cryptotephra is unequivocally correlated with the proximal deposits of an explosive eruption of the poorly known Mount Rittmann volcano, situated in northern Victoria Land. The cryptotephra is also correlated with a widespread tephra layer, which was erupted in 1254 C.E. and is present in numerous ice-cores and blue ice fields across East and West Antarctica. The characteristics of the tephra indicate that it was produced by a prolonged, moderate energy, mostly hydromagmatic eruption. This is the first time that a cryptotephra has been identified in marine sediments of the Ross Sea and in ice cores. It provides an important new and widespread stratigraphical datum with which the continental cryosphere and marine sedimentological records in Antarctica can be correlated. Moreover, from a purely volcanological point of view, the discovery further confirms the occurrence of a long-lasting, significant explosive eruption from Mount Rittmann in historical times that produced abundant widely dispersed fine ash. The study also highlights the inadequacy of current hazard assessments for poorly known volcanoes such as Mount Rittmann, located at high southern latitudes. |
author2 |
Di Roberto, A. Colizza, E. Del Carlo, P. Petrelli, M. Finocchiaro, F. Kuhn, G. |
format |
Article in Journal/Newspaper |
author |
Di Roberto A. Colizza E. Del Carlo P. Petrelli M. Finocchiaro F. Kuhn G. |
author_facet |
Di Roberto A. Colizza E. Del Carlo P. Petrelli M. Finocchiaro F. Kuhn G. |
author_sort |
Di Roberto A. |
title |
First marine cryptotephra in Antarctica found in sediments of the western Ross Sea correlates with englacial tephras and climate records |
title_short |
First marine cryptotephra in Antarctica found in sediments of the western Ross Sea correlates with englacial tephras and climate records |
title_full |
First marine cryptotephra in Antarctica found in sediments of the western Ross Sea correlates with englacial tephras and climate records |
title_fullStr |
First marine cryptotephra in Antarctica found in sediments of the western Ross Sea correlates with englacial tephras and climate records |
title_full_unstemmed |
First marine cryptotephra in Antarctica found in sediments of the western Ross Sea correlates with englacial tephras and climate records |
title_sort |
first marine cryptotephra in antarctica found in sediments of the western ross sea correlates with englacial tephras and climate records |
publishDate |
2019 |
url |
http://hdl.handle.net/11368/2965992 https://doi.org/10.1038/s41598-019-47188-3 https://www.nature.com/articles/s41598-019-47188-3 |
long_lat |
ENVELOPE(170.217,170.217,-72.317,-72.317) ENVELOPE(170.217,170.217,-72.317,-72.317) ENVELOPE(165.500,165.500,-73.450,-73.450) ENVELOPE(165.500,165.500,-73.450,-73.450) |
geographic |
Cape Hallett Hallett Mount Rittmann Rittmann Ross Sea Victoria Land West Antarctica |
geographic_facet |
Cape Hallett Hallett Mount Rittmann Rittmann Ross Sea Victoria Land West Antarctica |
genre |
Antarc* Antarctica Ross Sea Victoria Land West Antarctica |
genre_facet |
Antarc* Antarctica Ross Sea Victoria Land West Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/31337844 info:eu-repo/semantics/altIdentifier/wos/WOS:000476718900015 volume:9 issue:1 firstpage:10628 lastpage:10628 numberofpages:1 journal:SCIENTIFIC REPORTS http://hdl.handle.net/11368/2965992 doi:10.1038/s41598-019-47188-3 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85069648384 https://www.nature.com/articles/s41598-019-47188-3 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-019-47188-3 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766286426220003328 |