Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival
Distally deposited tephra from explosive volcanic eruptions can be a powerful tool for precise dating and correlation of sedimentary archives and landforms. However, the morphostratigraphic and chronological potential of ocean-rafted pumice has been under-utilized considering its long observational...
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Online Access: | https://hdl.handle.net/10037/19692 https://doi.org/10.1016/j.quascirev.2020.106654 |
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ftunivtroemsoe:oai:munin.uit.no:10037/19692 2023-05-15T16:38:09+02:00 Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival Farnsworth, Wesley Randall Blake Jr., Wesley Gudmundsdottir, Esther Ruth Ingólfsson, Ólafur Larsen, Gudrún Óladóttir, Bergrún Arna Schomacker, Anders 2020-10-24 https://hdl.handle.net/10037/19692 https://doi.org/10.1016/j.quascirev.2020.106654 eng eng Elsevier Quaternary Science Reviews Farnsworth, Blake Jr., Gudmundsdottir, Ingólfsson, Larsen, Óladóttir, Schomacker. Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival. Quaternary Science Reviews. 2020 FRIDAID 1842026 doi:10.1016/j.quascirev.2020.106654 0277-3791 1873-457X https://hdl.handle.net/10037/19692 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1016/j.quascirev.2020.106654 2021-06-25T17:57:44Z Distally deposited tephra from explosive volcanic eruptions can be a powerful tool for precise dating and correlation of sedimentary archives and landforms. However, the morphostratigraphic and chronological potential of ocean-rafted pumice has been under-utilized considering its long observational history and widespread distribution on modern and palaeo-shorelines around the world. Here we analyze the geochemical composition and elevation data of 60 samples of ocean-rafted pumice collected since 1958 from raised beaches on Svalbard. Comparison of pumice data with postglacial relative sea-level history suggests eight distinct pumice rafting events throughout the North Atlantic during the Middle and Late Holocene. Analyzed ocean-rafted pumice exhibit consistent silicic composition characteristic of deposits from Iceland’s volcanic system, Katla. Eruption-triggered jökulhlaups are key drivers of the transport of pumice from the Katla caldera to beyond the coast of Iceland and into the surface currents of the North Atlantic Ocean. Thus, the correlation of distinct, high-concentration pumice horizons from Katla deposited along raised Middle Holocene beach ridges in Svalbard further advocates for the persistence of the Mýrdalsjökull ice cap through the Holocene thermal maximum. Article in Journal/Newspaper Ice cap Iceland Katla Mýrdalsjökull North Atlantic Svalbard University of Tromsø: Munin Open Research Archive Katla ENVELOPE(-19.062,-19.062,63.631,63.631) Mýrdalsjökull ENVELOPE(-19.174,-19.174,63.643,63.643) Svalbard Quaternary Science Reviews 250 106654 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Farnsworth, Wesley Randall Blake Jr., Wesley Gudmundsdottir, Esther Ruth Ingólfsson, Ólafur Larsen, Gudrún Óladóttir, Bergrún Arna Schomacker, Anders Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
description |
Distally deposited tephra from explosive volcanic eruptions can be a powerful tool for precise dating and correlation of sedimentary archives and landforms. However, the morphostratigraphic and chronological potential of ocean-rafted pumice has been under-utilized considering its long observational history and widespread distribution on modern and palaeo-shorelines around the world. Here we analyze the geochemical composition and elevation data of 60 samples of ocean-rafted pumice collected since 1958 from raised beaches on Svalbard. Comparison of pumice data with postglacial relative sea-level history suggests eight distinct pumice rafting events throughout the North Atlantic during the Middle and Late Holocene. Analyzed ocean-rafted pumice exhibit consistent silicic composition characteristic of deposits from Iceland’s volcanic system, Katla. Eruption-triggered jökulhlaups are key drivers of the transport of pumice from the Katla caldera to beyond the coast of Iceland and into the surface currents of the North Atlantic Ocean. Thus, the correlation of distinct, high-concentration pumice horizons from Katla deposited along raised Middle Holocene beach ridges in Svalbard further advocates for the persistence of the Mýrdalsjökull ice cap through the Holocene thermal maximum. |
format |
Article in Journal/Newspaper |
author |
Farnsworth, Wesley Randall Blake Jr., Wesley Gudmundsdottir, Esther Ruth Ingólfsson, Ólafur Larsen, Gudrún Óladóttir, Bergrún Arna Schomacker, Anders |
author_facet |
Farnsworth, Wesley Randall Blake Jr., Wesley Gudmundsdottir, Esther Ruth Ingólfsson, Ólafur Larsen, Gudrún Óladóttir, Bergrún Arna Schomacker, Anders |
author_sort |
Farnsworth, Wesley Randall |
title |
Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival |
title_short |
Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival |
title_full |
Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival |
title_fullStr |
Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival |
title_full_unstemmed |
Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival |
title_sort |
ocean-rafted pumice constrains postglacial relative sea-level and supports holocene ice cap survival |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/19692 https://doi.org/10.1016/j.quascirev.2020.106654 |
long_lat |
ENVELOPE(-19.062,-19.062,63.631,63.631) ENVELOPE(-19.174,-19.174,63.643,63.643) |
geographic |
Katla Mýrdalsjökull Svalbard |
geographic_facet |
Katla Mýrdalsjökull Svalbard |
genre |
Ice cap Iceland Katla Mýrdalsjökull North Atlantic Svalbard |
genre_facet |
Ice cap Iceland Katla Mýrdalsjökull North Atlantic Svalbard |
op_relation |
Quaternary Science Reviews Farnsworth, Blake Jr., Gudmundsdottir, Ingólfsson, Larsen, Óladóttir, Schomacker. Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival. Quaternary Science Reviews. 2020 FRIDAID 1842026 doi:10.1016/j.quascirev.2020.106654 0277-3791 1873-457X https://hdl.handle.net/10037/19692 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1016/j.quascirev.2020.106654 |
container_title |
Quaternary Science Reviews |
container_volume |
250 |
container_start_page |
106654 |
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1766028449683603456 |