Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents
The Younger Dryas impact hypothesis posits that a cosmic impact across much of the Northern Hemisphere deposited the Younger Dryas boundary (YDB) layer, containing peak abundances in a variable assemblage of proxies, including magnetic and glassy impact-related spherules, high-temperature minerals a...
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Online Access: | https://pure.au.dk/portal/en/publications/672ffb3e-c454-497d-81d5-aaa467b8d6ee https://doi.org/10.1073/pnas.1507146112 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/672ffb3e-c454-497d-81d5-aaa467b8d6ee 2024-02-11T10:04:23+01:00 Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents Kennett, James P. Kennett, Douglas J. Culleton, Brendan J. Aura Tortosa, J. Emili Bischoff, James L. Bunch, Ted E. Daniel, I. Randolph Erlandson, Jon M. Ferraro, David Firestone, Richard B. Goodyear, Albert C. Israde-Alcantara, Isabel Johnson, John R. Jorda Pardo, Jesus F. Kimbel, David R. LeCompte, Malcolm A. Lopinot, Neal H. Mahaney, William C. Moore, Andrew M. T. Moore, Christopher R. Ray, Jack H. Stafford, Thomas W. Tankersley, Kenneth Barnett Wittke, James H. Wolbach, Wendy S. West, Allen 2015-08 https://pure.au.dk/portal/en/publications/672ffb3e-c454-497d-81d5-aaa467b8d6ee https://doi.org/10.1073/pnas.1507146112 eng eng https://pure.au.dk/portal/en/publications/672ffb3e-c454-497d-81d5-aaa467b8d6ee info:eu-repo/semantics/restrictedAccess Kennett , J P , Kennett , D J , Culleton , B J , Aura Tortosa , J E , Bischoff , J L , Bunch , T E , Daniel , I R , Erlandson , J M , Ferraro , D , Firestone , R B , Goodyear , A C , Israde-Alcantara , I , Johnson , J R , Jorda Pardo , J F , Kimbel , D R , LeCompte , M A , Lopinot , N H , Mahaney , W C , Moore , A M T , Moore , C R , Ray , J H , Stafford , T W , Tankersley , K B , Wittke , J H , Wolbach , W S & West , A 2015 , ' Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents ' , Proceedings of the National Academy of Sciences , vol. 112 , no. 32 , pp. E4344-E4353 . https://doi.org/10.1073/pnas.1507146112 Younger Dryas comet Bayesian radiocarbon synchroneity IMPACT HYPOTHESIS EXTRATERRESTRIAL IMPACT COSMIC IMPACT DEPTH MODELS BLACK MAT NANODIAMONDS TERMINATION CALIFORNIA SPHERULES WILDFIRE article 2015 ftuniaarhuspubl https://doi.org/10.1073/pnas.1507146112 2024-01-24T23:59:04Z The Younger Dryas impact hypothesis posits that a cosmic impact across much of the Northern Hemisphere deposited the Younger Dryas boundary (YDB) layer, containing peak abundances in a variable assemblage of proxies, including magnetic and glassy impact-related spherules, high-temperature minerals and melt glass, nanodiamonds, carbon spherules, aciniform carbon, platinum, and osmium. Bayesian chronological modeling was applied to 354 dates from 23 stratigraphic sections in 12 countries on four continents to establish a modeled YDB age range for this event of 12,835-12,735 Cal B.P. at 95% probability. This range overlaps that of a peak in extraterrestrial platinum in the Greenland Ice Sheet and of the earliest age of the Younger Dryas climate episode in six proxy records, suggesting a causal connection between the YDB impact event and the Younger Dryas. Two statistical tests indicate that both modeled and unmodeled ages in the 30 records are consistent with synchronous deposition of the YDB layer within the limits of dating uncertainty (similar to 100 y). The widespread distribution of the YDB layer suggests that it may serve as a datum layer. Article in Journal/Newspaper Greenland Ice Sheet Aarhus University: Research Greenland Proceedings of the National Academy of Sciences 112 32 E4344 E4353 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Younger Dryas comet Bayesian radiocarbon synchroneity IMPACT HYPOTHESIS EXTRATERRESTRIAL IMPACT COSMIC IMPACT DEPTH MODELS BLACK MAT NANODIAMONDS TERMINATION CALIFORNIA SPHERULES WILDFIRE |
spellingShingle |
Younger Dryas comet Bayesian radiocarbon synchroneity IMPACT HYPOTHESIS EXTRATERRESTRIAL IMPACT COSMIC IMPACT DEPTH MODELS BLACK MAT NANODIAMONDS TERMINATION CALIFORNIA SPHERULES WILDFIRE Kennett, James P. Kennett, Douglas J. Culleton, Brendan J. Aura Tortosa, J. Emili Bischoff, James L. Bunch, Ted E. Daniel, I. Randolph Erlandson, Jon M. Ferraro, David Firestone, Richard B. Goodyear, Albert C. Israde-Alcantara, Isabel Johnson, John R. Jorda Pardo, Jesus F. Kimbel, David R. LeCompte, Malcolm A. Lopinot, Neal H. Mahaney, William C. Moore, Andrew M. T. Moore, Christopher R. Ray, Jack H. Stafford, Thomas W. Tankersley, Kenneth Barnett Wittke, James H. Wolbach, Wendy S. West, Allen Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents |
topic_facet |
Younger Dryas comet Bayesian radiocarbon synchroneity IMPACT HYPOTHESIS EXTRATERRESTRIAL IMPACT COSMIC IMPACT DEPTH MODELS BLACK MAT NANODIAMONDS TERMINATION CALIFORNIA SPHERULES WILDFIRE |
description |
The Younger Dryas impact hypothesis posits that a cosmic impact across much of the Northern Hemisphere deposited the Younger Dryas boundary (YDB) layer, containing peak abundances in a variable assemblage of proxies, including magnetic and glassy impact-related spherules, high-temperature minerals and melt glass, nanodiamonds, carbon spherules, aciniform carbon, platinum, and osmium. Bayesian chronological modeling was applied to 354 dates from 23 stratigraphic sections in 12 countries on four continents to establish a modeled YDB age range for this event of 12,835-12,735 Cal B.P. at 95% probability. This range overlaps that of a peak in extraterrestrial platinum in the Greenland Ice Sheet and of the earliest age of the Younger Dryas climate episode in six proxy records, suggesting a causal connection between the YDB impact event and the Younger Dryas. Two statistical tests indicate that both modeled and unmodeled ages in the 30 records are consistent with synchronous deposition of the YDB layer within the limits of dating uncertainty (similar to 100 y). The widespread distribution of the YDB layer suggests that it may serve as a datum layer. |
format |
Article in Journal/Newspaper |
author |
Kennett, James P. Kennett, Douglas J. Culleton, Brendan J. Aura Tortosa, J. Emili Bischoff, James L. Bunch, Ted E. Daniel, I. Randolph Erlandson, Jon M. Ferraro, David Firestone, Richard B. Goodyear, Albert C. Israde-Alcantara, Isabel Johnson, John R. Jorda Pardo, Jesus F. Kimbel, David R. LeCompte, Malcolm A. Lopinot, Neal H. Mahaney, William C. Moore, Andrew M. T. Moore, Christopher R. Ray, Jack H. Stafford, Thomas W. Tankersley, Kenneth Barnett Wittke, James H. Wolbach, Wendy S. West, Allen |
author_facet |
Kennett, James P. Kennett, Douglas J. Culleton, Brendan J. Aura Tortosa, J. Emili Bischoff, James L. Bunch, Ted E. Daniel, I. Randolph Erlandson, Jon M. Ferraro, David Firestone, Richard B. Goodyear, Albert C. Israde-Alcantara, Isabel Johnson, John R. Jorda Pardo, Jesus F. Kimbel, David R. LeCompte, Malcolm A. Lopinot, Neal H. Mahaney, William C. Moore, Andrew M. T. Moore, Christopher R. Ray, Jack H. Stafford, Thomas W. Tankersley, Kenneth Barnett Wittke, James H. Wolbach, Wendy S. West, Allen |
author_sort |
Kennett, James P. |
title |
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents |
title_short |
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents |
title_full |
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents |
title_fullStr |
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents |
title_full_unstemmed |
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents |
title_sort |
bayesian chronological analyses consistent with synchronous age of 12,835-12,735 cal bp for younger dryas boundary on four continents |
publishDate |
2015 |
url |
https://pure.au.dk/portal/en/publications/672ffb3e-c454-497d-81d5-aaa467b8d6ee https://doi.org/10.1073/pnas.1507146112 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Kennett , J P , Kennett , D J , Culleton , B J , Aura Tortosa , J E , Bischoff , J L , Bunch , T E , Daniel , I R , Erlandson , J M , Ferraro , D , Firestone , R B , Goodyear , A C , Israde-Alcantara , I , Johnson , J R , Jorda Pardo , J F , Kimbel , D R , LeCompte , M A , Lopinot , N H , Mahaney , W C , Moore , A M T , Moore , C R , Ray , J H , Stafford , T W , Tankersley , K B , Wittke , J H , Wolbach , W S & West , A 2015 , ' Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal BP for Younger Dryas boundary on four continents ' , Proceedings of the National Academy of Sciences , vol. 112 , no. 32 , pp. E4344-E4353 . https://doi.org/10.1073/pnas.1507146112 |
op_relation |
https://pure.au.dk/portal/en/publications/672ffb3e-c454-497d-81d5-aaa467b8d6ee |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1073/pnas.1507146112 |
container_title |
Proceedings of the National Academy of Sciences |
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112 |
container_issue |
32 |
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E4344 |
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E4353 |
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1790600987449229312 |