Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard
The distal deposition of tephra from explosive volcanism has the potential to geochronologically constrain sedimentary archives and landforms. With this technique, we constrain a Late Glacial glacier re-advance on Svalbard and suggest that glacioisostatic emergence rates during the Younger Dryas chr...
Published in: | Quaternary Science Advances |
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Online Access: | https://hdl.handle.net/10037/23592 https://doi.org/10.1016/j.qsa.2021.100041 |
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ftunivtroemsoe:oai:munin.uit.no:10037/23592 2023-05-15T16:22:08+02:00 Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard Farnsworth, Wesley Randall Ingólfsson, Ólafur Mannerfelt, Erik S. Kalliokoski, Maarit H. Gudmundsdottir, Esther Ruth Retelle, Michael Allaart, Lis Brynjólfsson, Skafti Furze, Mark Hancock, Holt John Kjær, Kurt H. Pieńkowski, Anna J. Schomacker, Anders 2021-10-09 https://hdl.handle.net/10037/23592 https://doi.org/10.1016/j.qsa.2021.100041 eng eng Elsevier Quaternary Science Advances Farnsworth, Ingólfsson, Mannerfelt, Kalliokoski, Gudmundsdottir, Retelle, Allaart, Brynjólfsson, Furze, Hancock, Kjær, Pieńkowski, Schomacker. Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard. Quaternary Science Advances. 2022 FRIDAID 1946163 doi:10.1016/j.qsa.2021.100041 2666-0334 https://hdl.handle.net/10037/23592 openAccess Copyright 2022 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1016/j.qsa.2021.100041 2022-01-05T23:56:36Z The distal deposition of tephra from explosive volcanism has the potential to geochronologically constrain sedimentary archives and landforms. With this technique, we constrain a Late Glacial glacier re-advance on Svalbard and suggest that glacioisostatic emergence rates during the Younger Dryas chronozone were at least three times greater than previous estimates. The identification of cryptotephra (i.e., non-visible) horizons, outside the extent of visible fallout, has greatly expanded the field of application of tephrochronology. While the cryptotephra revolution has triggered a burst of investigations using low-concentration tephra to constrain distal sedimentary sequences, as of yet, few investigations have used this tool to constrain the age of glacial landforms. Here we constrain a moraine formed during a glacier re-advance (12.8–12.2 cal ka BP) into a high relative sea level during the early Younger Dryas chronozone, with the first identified occurrence of the Icelandic Vedde Ash on Svalbard. Low concentrations (∼63 shards/g dried sediment) of the bimodal Vedde Ash (rhyolitic long axis c. 30–90 μm; basaltic c. 35–100 μm) were identified in a lake sediment sequence collected from the Heftyebreen glacier foreland, in a tributary valley to Grønfjorden, western Spitsbergen. Given that the cryptotephra was deposited within a lacustrine isolation basin, we further reconstruct a minimum rate of glacio-isostatic emergence during the end of the Late Glacial. Strong and longstanding evidence suggests Svalbard's west-coast cirque glaciers were less extensive during the Late Glacial than the Late Holocene. However, the Late Glacial Heftyebreen moraine suggests Svalbard glacier dynamics during this period may have been more complex. Article in Journal/Newspaper glacier Svalbard Spitsbergen University of Tromsø: Munin Open Research Archive Dryas Glacier ENVELOPE(-70.994,-70.994,82.035,82.035) Heftyebreen ENVELOPE(14.033,14.033,78.000,78.000) Svalbard Quaternary Science Advances 5 100041 |
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 Ingólfsson, Ólafur Mannerfelt, Erik S. Kalliokoski, Maarit H. Gudmundsdottir, Esther Ruth Retelle, Michael Allaart, Lis Brynjólfsson, Skafti Furze, Mark Hancock, Holt John Kjær, Kurt H. Pieńkowski, Anna J. Schomacker, Anders Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
description |
The distal deposition of tephra from explosive volcanism has the potential to geochronologically constrain sedimentary archives and landforms. With this technique, we constrain a Late Glacial glacier re-advance on Svalbard and suggest that glacioisostatic emergence rates during the Younger Dryas chronozone were at least three times greater than previous estimates. The identification of cryptotephra (i.e., non-visible) horizons, outside the extent of visible fallout, has greatly expanded the field of application of tephrochronology. While the cryptotephra revolution has triggered a burst of investigations using low-concentration tephra to constrain distal sedimentary sequences, as of yet, few investigations have used this tool to constrain the age of glacial landforms. Here we constrain a moraine formed during a glacier re-advance (12.8–12.2 cal ka BP) into a high relative sea level during the early Younger Dryas chronozone, with the first identified occurrence of the Icelandic Vedde Ash on Svalbard. Low concentrations (∼63 shards/g dried sediment) of the bimodal Vedde Ash (rhyolitic long axis c. 30–90 μm; basaltic c. 35–100 μm) were identified in a lake sediment sequence collected from the Heftyebreen glacier foreland, in a tributary valley to Grønfjorden, western Spitsbergen. Given that the cryptotephra was deposited within a lacustrine isolation basin, we further reconstruct a minimum rate of glacio-isostatic emergence during the end of the Late Glacial. Strong and longstanding evidence suggests Svalbard's west-coast cirque glaciers were less extensive during the Late Glacial than the Late Holocene. However, the Late Glacial Heftyebreen moraine suggests Svalbard glacier dynamics during this period may have been more complex. |
format |
Article in Journal/Newspaper |
author |
Farnsworth, Wesley Randall Ingólfsson, Ólafur Mannerfelt, Erik S. Kalliokoski, Maarit H. Gudmundsdottir, Esther Ruth Retelle, Michael Allaart, Lis Brynjólfsson, Skafti Furze, Mark Hancock, Holt John Kjær, Kurt H. Pieńkowski, Anna J. Schomacker, Anders |
author_facet |
Farnsworth, Wesley Randall Ingólfsson, Ólafur Mannerfelt, Erik S. Kalliokoski, Maarit H. Gudmundsdottir, Esther Ruth Retelle, Michael Allaart, Lis Brynjólfsson, Skafti Furze, Mark Hancock, Holt John Kjær, Kurt H. Pieńkowski, Anna J. Schomacker, Anders |
author_sort |
Farnsworth, Wesley Randall |
title |
Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard |
title_short |
Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard |
title_full |
Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard |
title_fullStr |
Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard |
title_full_unstemmed |
Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard |
title_sort |
vedde ash constrains younger dryas glacier re-advance and rapid glacio-isostatic rebound on svalbard |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/23592 https://doi.org/10.1016/j.qsa.2021.100041 |
long_lat |
ENVELOPE(-70.994,-70.994,82.035,82.035) ENVELOPE(14.033,14.033,78.000,78.000) |
geographic |
Dryas Glacier Heftyebreen Svalbard |
geographic_facet |
Dryas Glacier Heftyebreen Svalbard |
genre |
glacier Svalbard Spitsbergen |
genre_facet |
glacier Svalbard Spitsbergen |
op_relation |
Quaternary Science Advances Farnsworth, Ingólfsson, Mannerfelt, Kalliokoski, Gudmundsdottir, Retelle, Allaart, Brynjólfsson, Furze, Hancock, Kjær, Pieńkowski, Schomacker. Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard. Quaternary Science Advances. 2022 FRIDAID 1946163 doi:10.1016/j.qsa.2021.100041 2666-0334 https://hdl.handle.net/10037/23592 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1016/j.qsa.2021.100041 |
container_title |
Quaternary Science Advances |
container_volume |
5 |
container_start_page |
100041 |
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1766010110389256192 |