Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia
Ash layers from explosive volcanic eruptions (i.e., tephra) represent isochronous surfaces independent from the environment in which they are deposited and the distance from their source. In comparison to eastern Beringia (non-glaciated Yukon and Alaska), few Plio-Pleistocene distal tephra are known...
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Copernicus Publications
2014
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fttriple:oai:gotriple.eu:oai:doaj.org/article:19316fdeeb1740c2ba5e80604b5e4c2e 2023-05-15T15:00:27+02:00 Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia C. van den Bogaard B. J. L. Jensen N. J. G. Pearce D. G. Froese M. V. Portnyagin V. V. Ponomareva V. Wennrich 2014-05-01 https://doi.org/10.5194/cp-10-1041-2014 http://www.clim-past.net/10/1041/2014/cp-10-1041-2014.pdf https://doaj.org/article/19316fdeeb1740c2ba5e80604b5e4c2e en eng Copernicus Publications 1814-9324 1814-9332 doi:10.5194/cp-10-1041-2014 http://www.clim-past.net/10/1041/2014/cp-10-1041-2014.pdf https://doaj.org/article/19316fdeeb1740c2ba5e80604b5e4c2e undefined Climate of the Past, Vol 10, Iss 3, Pp 1041-1062 (2014) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2014 fttriple https://doi.org/10.5194/cp-10-1041-2014 2023-01-22T17:49:58Z Ash layers from explosive volcanic eruptions (i.e., tephra) represent isochronous surfaces independent from the environment in which they are deposited and the distance from their source. In comparison to eastern Beringia (non-glaciated Yukon and Alaska), few Plio-Pleistocene distal tephra are known from western Beringia (non-glaciated arctic and subarctic eastern Russia), hindering the dating and correlation of sediments beyond the limit of radiocarbon and luminescence methods. The identification of eight visible tephra layers (T0–T7) in sediment cores extracted from Lake El'gygytgyn, in the Far East Russian Arctic, indicates the feasibility of developing a tephrostratigraphic framework for this region. These tephra range in age from ca 45 ky to 2.2 My old, and each is described and characterized by its major-, minor-, trace-element and Pb isotope composition. These data show that subduction-zone-related volcanism from the Kurile–Kamchatka–Aleutian Arc and Alaska Peninsula is the most likely source, with Pb isotope data indicating a Kamchatkan volcanic source for tephra layers T0–T5 and T7, while a source in the Aleutian Arc is possible for tephra T6. The location of Lake El'gygytgyn relative to potential source volcanoes (> 1000 km) suggests these tephra are regionally distributed over a large area. These deposits provide a unique opportunity to correlate the high-resolution paleoenvironmental records of Lake El'gygytgyn to other terrestrial paleoenvironmental archives from western Beringia and marine records from the western North Pacific and Bering Sea, and to move towards the development of a robust integrated framework between the continuous paleoclimatic records of Lake El'gygytgyn and other terrestrial and marine records in NE Eurasia. Article in Journal/Newspaper Arctic Bering Sea Kamchatka Subarctic Alaska Beringia Yukon Unknown Arctic Yukon Bering Sea Pacific Climate of the Past 10 3 1041 1062 |
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language |
English |
topic |
geo envir |
spellingShingle |
geo envir C. van den Bogaard B. J. L. Jensen N. J. G. Pearce D. G. Froese M. V. Portnyagin V. V. Ponomareva V. Wennrich Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia |
topic_facet |
geo envir |
description |
Ash layers from explosive volcanic eruptions (i.e., tephra) represent isochronous surfaces independent from the environment in which they are deposited and the distance from their source. In comparison to eastern Beringia (non-glaciated Yukon and Alaska), few Plio-Pleistocene distal tephra are known from western Beringia (non-glaciated arctic and subarctic eastern Russia), hindering the dating and correlation of sediments beyond the limit of radiocarbon and luminescence methods. The identification of eight visible tephra layers (T0–T7) in sediment cores extracted from Lake El'gygytgyn, in the Far East Russian Arctic, indicates the feasibility of developing a tephrostratigraphic framework for this region. These tephra range in age from ca 45 ky to 2.2 My old, and each is described and characterized by its major-, minor-, trace-element and Pb isotope composition. These data show that subduction-zone-related volcanism from the Kurile–Kamchatka–Aleutian Arc and Alaska Peninsula is the most likely source, with Pb isotope data indicating a Kamchatkan volcanic source for tephra layers T0–T5 and T7, while a source in the Aleutian Arc is possible for tephra T6. The location of Lake El'gygytgyn relative to potential source volcanoes (> 1000 km) suggests these tephra are regionally distributed over a large area. These deposits provide a unique opportunity to correlate the high-resolution paleoenvironmental records of Lake El'gygytgyn to other terrestrial paleoenvironmental archives from western Beringia and marine records from the western North Pacific and Bering Sea, and to move towards the development of a robust integrated framework between the continuous paleoclimatic records of Lake El'gygytgyn and other terrestrial and marine records in NE Eurasia. |
format |
Article in Journal/Newspaper |
author |
C. van den Bogaard B. J. L. Jensen N. J. G. Pearce D. G. Froese M. V. Portnyagin V. V. Ponomareva V. Wennrich |
author_facet |
C. van den Bogaard B. J. L. Jensen N. J. G. Pearce D. G. Froese M. V. Portnyagin V. V. Ponomareva V. Wennrich |
author_sort |
C. van den Bogaard |
title |
Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia |
title_short |
Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia |
title_full |
Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia |
title_fullStr |
Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia |
title_full_unstemmed |
Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia |
title_sort |
volcanic ash layers in lake el'gygytgyn: eight new regionally significant chronostratigraphic markers for western beringia |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/cp-10-1041-2014 http://www.clim-past.net/10/1041/2014/cp-10-1041-2014.pdf https://doaj.org/article/19316fdeeb1740c2ba5e80604b5e4c2e |
geographic |
Arctic Yukon Bering Sea Pacific |
geographic_facet |
Arctic Yukon Bering Sea Pacific |
genre |
Arctic Bering Sea Kamchatka Subarctic Alaska Beringia Yukon |
genre_facet |
Arctic Bering Sea Kamchatka Subarctic Alaska Beringia Yukon |
op_source |
Climate of the Past, Vol 10, Iss 3, Pp 1041-1062 (2014) |
op_relation |
1814-9324 1814-9332 doi:10.5194/cp-10-1041-2014 http://www.clim-past.net/10/1041/2014/cp-10-1041-2014.pdf https://doaj.org/article/19316fdeeb1740c2ba5e80604b5e4c2e |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-10-1041-2014 |
container_title |
Climate of the Past |
container_volume |
10 |
container_issue |
3 |
container_start_page |
1041 |
op_container_end_page |
1062 |
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