Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A.
Holocene tephrostratigraphy in Alaska provides independent chronology and stratigraphic correlation in a region where reworked old (Holocene) organic carbon can significantly distort radiocarbon chronologies. Here we present new glass chemistry and chronology for Holocene tephras preserved in three...
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ftsouthampton:oai:eprints.soton.ac.uk:407681 2023-07-30T04:02:44+02:00 Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A. Monteath, Alistair van Hardenbroek, M. Davies, Lauren Froese, Duane Langdon, Peter Xu, Xiaomei Edwards, Mary 2017-09 text https://eprints.soton.ac.uk/407681/ https://eprints.soton.ac.uk/407681/1/Monteath_et_al_Accepted_Manuscript_QR.pdf en English eng https://eprints.soton.ac.uk/407681/1/Monteath_et_al_Accepted_Manuscript_QR.pdf Monteath, Alistair, van Hardenbroek, M., Davies, Lauren, Froese, Duane, Langdon, Peter, Xu, Xiaomei and Edwards, Mary (2017) Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A. Quaternary Research, 88 (2), 169-178. (doi:10.1017/qua.2017.38 <http://dx.doi.org/10.1017/qua.2017.38>). accepted_manuscript Article PeerReviewed 2017 ftsouthampton https://doi.org/10.1017/qua.2017.38 2023-07-09T22:14:06Z Holocene tephrostratigraphy in Alaska provides independent chronology and stratigraphic correlation in a region where reworked old (Holocene) organic carbon can significantly distort radiocarbon chronologies. Here we present new glass chemistry and chronology for Holocene tephras preserved in three Alaskan lakes: one in the eastern interior, and two in the southern Brooks Range. Tephra beds in the eastern interior lake-sediment core are correlated with the White River Ash and the Hayes tephra set H (~4200-3700 cal yr BP), while an additional discrete tephra bed is likely from the Aleutian Arc-Alaska Peninsula. Cryptotephras (non-visible tephras) found in the Brooks Range include the informally named “Ruppert tephra” (~2700-2300 cal yr BP), and the Aniakchak caldera-forming event II tephra (CFE II; ~3600 cal yr BP). A third underlying Brooks Range cryptotephra is chemically indistinguishable from the Aniakchak CFE II tephra (4070-3760 cal yr BP) and is likely to be from an earlier eruption of the Aniakchak volcano. Article in Journal/Newspaper Brooks Range Alaska University of Southampton: e-Prints Soton Hayes ENVELOPE(-64.167,-64.167,-66.833,-66.833) Quaternary Research 88 2 169 178 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Holocene tephrostratigraphy in Alaska provides independent chronology and stratigraphic correlation in a region where reworked old (Holocene) organic carbon can significantly distort radiocarbon chronologies. Here we present new glass chemistry and chronology for Holocene tephras preserved in three Alaskan lakes: one in the eastern interior, and two in the southern Brooks Range. Tephra beds in the eastern interior lake-sediment core are correlated with the White River Ash and the Hayes tephra set H (~4200-3700 cal yr BP), while an additional discrete tephra bed is likely from the Aleutian Arc-Alaska Peninsula. Cryptotephras (non-visible tephras) found in the Brooks Range include the informally named “Ruppert tephra” (~2700-2300 cal yr BP), and the Aniakchak caldera-forming event II tephra (CFE II; ~3600 cal yr BP). A third underlying Brooks Range cryptotephra is chemically indistinguishable from the Aniakchak CFE II tephra (4070-3760 cal yr BP) and is likely to be from an earlier eruption of the Aniakchak volcano. |
format |
Article in Journal/Newspaper |
author |
Monteath, Alistair van Hardenbroek, M. Davies, Lauren Froese, Duane Langdon, Peter Xu, Xiaomei Edwards, Mary |
spellingShingle |
Monteath, Alistair van Hardenbroek, M. Davies, Lauren Froese, Duane Langdon, Peter Xu, Xiaomei Edwards, Mary Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A. |
author_facet |
Monteath, Alistair van Hardenbroek, M. Davies, Lauren Froese, Duane Langdon, Peter Xu, Xiaomei Edwards, Mary |
author_sort |
Monteath, Alistair |
title |
Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A. |
title_short |
Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A. |
title_full |
Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A. |
title_fullStr |
Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A. |
title_full_unstemmed |
Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A. |
title_sort |
chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern alaska, u.s.a. |
publishDate |
2017 |
url |
https://eprints.soton.ac.uk/407681/ https://eprints.soton.ac.uk/407681/1/Monteath_et_al_Accepted_Manuscript_QR.pdf |
long_lat |
ENVELOPE(-64.167,-64.167,-66.833,-66.833) |
geographic |
Hayes |
geographic_facet |
Hayes |
genre |
Brooks Range Alaska |
genre_facet |
Brooks Range Alaska |
op_relation |
https://eprints.soton.ac.uk/407681/1/Monteath_et_al_Accepted_Manuscript_QR.pdf Monteath, Alistair, van Hardenbroek, M., Davies, Lauren, Froese, Duane, Langdon, Peter, Xu, Xiaomei and Edwards, Mary (2017) Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, U.S.A. Quaternary Research, 88 (2), 169-178. (doi:10.1017/qua.2017.38 <http://dx.doi.org/10.1017/qua.2017.38>). |
op_rights |
accepted_manuscript |
op_doi |
https://doi.org/10.1017/qua.2017.38 |
container_title |
Quaternary Research |
container_volume |
88 |
container_issue |
2 |
container_start_page |
169 |
op_container_end_page |
178 |
_version_ |
1772813556631207936 |