Extending the late holocene tephrochronology of the central Kenai Peninsula, Alaska
Tephrochronology, the reconstruction of past volcanic ash deposition, provides a valuable method for dating sediments and determining long-term volcanic history. Tephra layers are highly numerous in Alaska, but knowledge of their occurrence and distribution is incomplete. This study expands the regi...
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Arctic Institute of North America
2008
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Online Access: | https://hull-repository.worktribe.com/file/470863/1/Article.pdf https://hull-repository.worktribe.com/output/470863 https://doi.org/10.14430/arctic22 |
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ftunivhullir:oai:hull-repository.worktribe.com:470863 2024-09-15T17:50:19+00:00 Extending the late holocene tephrochronology of the central Kenai Peninsula, Alaska Blackford, Jeffrey J. Payne, Richard J. 2008-09-01 https://hull-repository.worktribe.com/file/470863/1/Article.pdf https://hull-repository.worktribe.com/output/470863 https://doi.org/10.14430/arctic22 English eng Arctic Institute of North America https://hull-repository.worktribe.com/output/470863 Arctic Volume 61 Issue 3 Pagination 243-254 doi:https://doi.org/10.14430/arctic22 https://hull-repository.worktribe.com/file/470863/1/Article.pdf 0004-0843 doi:10.14430/arctic22 openAccess Tephra Cryptotephra Peatlands Alaska Volcanoes Electron probe microanalysis Journal Article acceptedVersion 2008 ftunivhullir https://doi.org/10.14430/arctic22 2024-07-22T14:05:21Z Tephrochronology, the reconstruction of past volcanic ash deposition, provides a valuable method for dating sediments and determining long-term volcanic history. Tephra layers are highly numerous in Alaska, but knowledge of their occurrence and distribution is incomplete. This study expands the regional tephrochronology for the Kenai Peninsula of south-central Alaska by investigating the tephrostratigraphy of two peatland sites. We located seven visible tephras and seven microtephras and investigated the particle size and geochemistry of the visible tephras. Radiocarbon dates were used to estimate the timescale of each core. Geochemical comparison showed that the visible tephras originated from late Holocene eruptions of Augustine, Crater Peak-Mt. Spurr, and Hayes volcanoes. Some of the tephras had been documented previously, and these new findings expand their known range. Others represent eruptions not previously reported, including a Crater Peak-Mt. Spurr eruption around 430 cal. BP. The results provide new tephra data for the region, illustrate the spatial heterogeneity of tephra deposition, and show the potential of microtephras for expanding the regional tephra record. © The Arctic Institute of North America. Article in Journal/Newspaper Arctic Arctic Institute of North America The Arctic Institute Alaska University of Hull: Repository@Hull ARCTIC 61 3 |
institution |
Open Polar |
collection |
University of Hull: Repository@Hull |
op_collection_id |
ftunivhullir |
language |
English |
topic |
Tephra Cryptotephra Peatlands Alaska Volcanoes Electron probe microanalysis |
spellingShingle |
Tephra Cryptotephra Peatlands Alaska Volcanoes Electron probe microanalysis Blackford, Jeffrey J. Payne, Richard J. Extending the late holocene tephrochronology of the central Kenai Peninsula, Alaska |
topic_facet |
Tephra Cryptotephra Peatlands Alaska Volcanoes Electron probe microanalysis |
description |
Tephrochronology, the reconstruction of past volcanic ash deposition, provides a valuable method for dating sediments and determining long-term volcanic history. Tephra layers are highly numerous in Alaska, but knowledge of their occurrence and distribution is incomplete. This study expands the regional tephrochronology for the Kenai Peninsula of south-central Alaska by investigating the tephrostratigraphy of two peatland sites. We located seven visible tephras and seven microtephras and investigated the particle size and geochemistry of the visible tephras. Radiocarbon dates were used to estimate the timescale of each core. Geochemical comparison showed that the visible tephras originated from late Holocene eruptions of Augustine, Crater Peak-Mt. Spurr, and Hayes volcanoes. Some of the tephras had been documented previously, and these new findings expand their known range. Others represent eruptions not previously reported, including a Crater Peak-Mt. Spurr eruption around 430 cal. BP. The results provide new tephra data for the region, illustrate the spatial heterogeneity of tephra deposition, and show the potential of microtephras for expanding the regional tephra record. © The Arctic Institute of North America. |
format |
Article in Journal/Newspaper |
author |
Blackford, Jeffrey J. Payne, Richard J. |
author_facet |
Blackford, Jeffrey J. Payne, Richard J. |
author_sort |
Blackford, Jeffrey J. |
title |
Extending the late holocene tephrochronology of the central Kenai Peninsula, Alaska |
title_short |
Extending the late holocene tephrochronology of the central Kenai Peninsula, Alaska |
title_full |
Extending the late holocene tephrochronology of the central Kenai Peninsula, Alaska |
title_fullStr |
Extending the late holocene tephrochronology of the central Kenai Peninsula, Alaska |
title_full_unstemmed |
Extending the late holocene tephrochronology of the central Kenai Peninsula, Alaska |
title_sort |
extending the late holocene tephrochronology of the central kenai peninsula, alaska |
publisher |
Arctic Institute of North America |
publishDate |
2008 |
url |
https://hull-repository.worktribe.com/file/470863/1/Article.pdf https://hull-repository.worktribe.com/output/470863 https://doi.org/10.14430/arctic22 |
genre |
Arctic Arctic Institute of North America The Arctic Institute Alaska |
genre_facet |
Arctic Arctic Institute of North America The Arctic Institute Alaska |
op_relation |
https://hull-repository.worktribe.com/output/470863 Arctic Volume 61 Issue 3 Pagination 243-254 doi:https://doi.org/10.14430/arctic22 https://hull-repository.worktribe.com/file/470863/1/Article.pdf 0004-0843 doi:10.14430/arctic22 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.14430/arctic22 |
container_title |
ARCTIC |
container_volume |
61 |
container_issue |
3 |
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1810292157047635968 |