High-precision ultra-distal Holocene tephrochronology in North America
High-precision ultra-distal Holocene tephrochronology in North America
Far-travelled volcanic ashes (tephras) from Holocene eruptions in Alaska and the Pacific northwest have been traced to the easternmost extent of North America, providing the basis for a new high-precision geochronological framework throughout the continent through tephrochronology (the dating and correlation of tephra isochrons in sedimentary records). The reported isochrons are geochemically distinct, with seven correlated to documented sources in Alaska and the Cascades, including the Mazama ash from Oregon (w7600 years old) and the eastern lobe of the White River Ash from Alaska (w1150 years old). These findings mark the beginning of a tephrochronological framework of enhanced precision across North America, with applications in palaeoclimate, surface process and archaeological studies. The particle travel distances involved (up to w7000 km) also demonstrate the potential for continent-wide or trans-Atlantic socio-economic disruption from similar future eruptions.
6-11
Pyne-O'Donnell, Sean
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Hughes, Paul
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Froese, Duane
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Jensen, Britta
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Kuehn, Stephen
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Mallon, Gunnar
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Amesbury, Matthew
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Charman, Dan
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Daley, Tim
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Loader, Neil
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Street-Perrott, Alayne
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Woodman-Ralph, Jonathan
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2012
Pyne-O'Donnell, Sean
3eb5b3ff-c725-4d9b-8727-68bea5daf266
Hughes, Paul
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Froese, Duane
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Jensen, Britta
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Kuehn, Stephen
cc2c49a1-01eb-4ea2-ae38-2a339d95f897
Mallon, Gunnar
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Amesbury, Matthew
84a60fe0-4916-45c4-8515-20aa539ac870
Charman, Dan
41be0090-9d2e-487c-b9d4-151b93a80f3a
Daley, Tim
87b6f2fa-550d-4e46-a04c-40c47d89c0f5
Loader, Neil
e03fd6c3-883b-425a-a0b8-e5e66047ad4f
Street-Perrott, Alayne
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Woodman-Ralph, Jonathan
d12a9c37-3e61-43d0-b482-d2bc21ffd81c
Pyne-O'Donnell, Sean, Hughes, Paul, Froese, Duane, Jensen, Britta, Kuehn, Stephen, Mallon, Gunnar, Amesbury, Matthew, Charman, Dan, Daley, Tim, Loader, Neil, Street-Perrott, Alayne and Woodman-Ralph, Jonathan
(2012)
High-precision ultra-distal Holocene tephrochronology in North America.
Quaternary Science Reviews, 52, .
(doi:10.1016/j.quascirev.2012.07.024).
Abstract
Far-travelled volcanic ashes (tephras) from Holocene eruptions in Alaska and the Pacific northwest have been traced to the easternmost extent of North America, providing the basis for a new high-precision geochronological framework throughout the continent through tephrochronology (the dating and correlation of tephra isochrons in sedimentary records). The reported isochrons are geochemically distinct, with seven correlated to documented sources in Alaska and the Cascades, including the Mazama ash from Oregon (w7600 years old) and the eastern lobe of the White River Ash from Alaska (w1150 years old). These findings mark the beginning of a tephrochronological framework of enhanced precision across North America, with applications in palaeoclimate, surface process and archaeological studies. The particle travel distances involved (up to w7000 km) also demonstrate the potential for continent-wide or trans-Atlantic socio-economic disruption from similar future eruptions.
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Published date: 2012
Organisations:
Palaeoenvironment Laboratory (PLUS)
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Local EPrints ID: 363592
URI: http://eprints.soton.ac.uk/id/eprint/363592
ISSN: 0277-3791
PURE UUID: 5f607493-88b6-411a-80b2-f6552eb6d461
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Date deposited: 27 Mar 2014 14:49
Last modified: 15 Mar 2024 03:00
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Author:
Sean Pyne-O'Donnell
Author:
Duane Froese
Author:
Britta Jensen
Author:
Stephen Kuehn
Author:
Gunnar Mallon
Author:
Matthew Amesbury
Author:
Dan Charman
Author:
Tim Daley
Author:
Neil Loader
Author:
Alayne Street-Perrott
Author:
Jonathan Woodman-Ralph
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