Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal B.P. 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://doi.org/10.1073/pnas.1507146112 https://pubmed.ncbi.nlm.nih.gov/26216981 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4538614/ |
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ftpubmed:26216981 2024-09-09T19:43:23+00:00 Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal B.P. 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-Alcántara, Isabel Johnson, John R Jordá Pardo, Jesús 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 Aug 11 https://doi.org/10.1073/pnas.1507146112 https://pubmed.ncbi.nlm.nih.gov/26216981 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4538614/ eng eng Atypon https://doi.org/10.1073/pnas.1507146112 https://pubmed.ncbi.nlm.nih.gov/26216981 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4538614/ Proc Natl Acad Sci U S A ISSN:1091-6490 Volume:112 Issue:32 Bayesian Younger Dryas comet radiocarbon synchroneity Journal Article 2015 ftpubmed https://doi.org/10.1073/pnas.1507146112 2024-07-09T16:02:00Z 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 (∼ 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 PubMed Central (PMC) Greenland Proceedings of the National Academy of Sciences 112 32 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Bayesian Younger Dryas comet radiocarbon synchroneity |
spellingShingle |
Bayesian Younger Dryas comet radiocarbon synchroneity 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-Alcántara, Isabel Johnson, John R Jordá Pardo, Jesús 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 B.P. for Younger Dryas boundary on four continents. |
topic_facet |
Bayesian Younger Dryas comet radiocarbon synchroneity |
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 (∼ 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-Alcántara, Isabel Johnson, John R Jordá Pardo, Jesús 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-Alcántara, Isabel Johnson, John R Jordá Pardo, Jesús 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 B.P. for Younger Dryas boundary on four continents. |
title_short |
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal B.P. for Younger Dryas boundary on four continents. |
title_full |
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal B.P. for Younger Dryas boundary on four continents. |
title_fullStr |
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal B.P. for Younger Dryas boundary on four continents. |
title_full_unstemmed |
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal B.P. for Younger Dryas boundary on four continents. |
title_sort |
bayesian chronological analyses consistent with synchronous age of 12,835-12,735 cal b.p. for younger dryas boundary on four continents. |
publisher |
Atypon |
publishDate |
2015 |
url |
https://doi.org/10.1073/pnas.1507146112 https://pubmed.ncbi.nlm.nih.gov/26216981 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4538614/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Proc Natl Acad Sci U S A ISSN:1091-6490 Volume:112 Issue:32 |
op_relation |
https://doi.org/10.1073/pnas.1507146112 https://pubmed.ncbi.nlm.nih.gov/26216981 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4538614/ |
op_doi |
https://doi.org/10.1073/pnas.1507146112 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
112 |
container_issue |
32 |
_version_ |
1809912735259951104 |