Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols
Previous evidence for fragments of a cosmic airburst in the Western Alps has been shown to reside in weathering rinds in surface clasts of Late Glacial (LG) (mid-LG-post Allerød) deposits and in Ah horizons of several associated paleosols. In contrast to outlying strata, Younger Dryas (YD) paleosol...
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/79890b50-ffad-4884-bfae-5eeb687e52d0 2024-06-23T07:53:22+00:00 Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols Mahaney, William C. Somelar, Peeter West, Allen Krinsley, David H. Allen, Christopher C.R. Pentlavalli, Prasanna Young, Jonathan M. Dohm, James M. LeCompte, Malcolm Kelleher, Brian P. Jordan, Sean F. Pulleyblank, Coren Dirszowsky, Randy Costa, Pedro 2017-05-18 https://pure.qub.ac.uk/en/publications/79890b50-ffad-4884-bfae-5eeb687e52d0 https://doi.org/10.1016/j.quaint.2017.01.043 http://www.scopus.com/inward/record.url?scp=85011590485&partnerID=8YFLogxK eng eng https://pure.qub.ac.uk/en/publications/79890b50-ffad-4884-bfae-5eeb687e52d0 info:eu-repo/semantics/closedAccess Mahaney , W C , Somelar , P , West , A , Krinsley , D H , Allen , C C R , Pentlavalli , P , Young , J M , Dohm , J M , LeCompte , M , Kelleher , B P , Jordan , S F , Pulleyblank , C , Dirszowsky , R & Costa , P 2017 , ' Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols ' , Quaternary International , vol. 438 , no. B , pp. 68-80 . https://doi.org/10.1016/j.quaint.2017.01.043 Archived airburst sedimentary evidence Younger Dryas Boundary (YDB) /dk/atira/pure/subjectarea/asjc/1900/1904 name=Earth-Surface Processes article 2017 ftqueensubelpubl https://doi.org/10.1016/j.quaint.2017.01.043 2024-06-11T14:25:40Z Previous evidence for fragments of a cosmic airburst in the Western Alps has been shown to reside in weathering rinds in surface clasts of Late Glacial (LG) (mid-LG-post Allerød) deposits and in Ah horizons of several associated paleosols. In contrast to outlying strata, Younger Dryas (YD) paleosol horizons contain minor reworked airburst evidence that includes melted quartz/pyroxene grains, carbon spherules, glass-like carbon, and with minor differences in microbial populations. New data from LG paleosol profiles show REEs elevated above crustal abundance in several profiles of mid-Late Glacial age, along with elevated Pt concentrations, similar to those found at the YD Boundary in the Greenland Ice Sheet. Pt/Pd ratios that are elevated above background suggest an exogenic influx of Pt from meteoritic ablation and/or airbursts. An increasing number of localities with sedimentary time lines coeval with an airburst (12.8 ka) indicate the event was intercontinental, producing widespread conflagrations archived in local sediment sequences. This is the first instance worldwide in which evidence of the black mat event has been found both in weathering rinds and in paleosols in the Alps, with such information being applicable to reconnaissance beyond Earth such as in the case of Mars. Article in Journal/Newspaper Greenland Ice Sheet Queen's University Belfast Research Portal Greenland Quaternary International 438 68 80 |
institution |
Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
Archived airburst sedimentary evidence Younger Dryas Boundary (YDB) /dk/atira/pure/subjectarea/asjc/1900/1904 name=Earth-Surface Processes |
spellingShingle |
Archived airburst sedimentary evidence Younger Dryas Boundary (YDB) /dk/atira/pure/subjectarea/asjc/1900/1904 name=Earth-Surface Processes Mahaney, William C. Somelar, Peeter West, Allen Krinsley, David H. Allen, Christopher C.R. Pentlavalli, Prasanna Young, Jonathan M. Dohm, James M. LeCompte, Malcolm Kelleher, Brian P. Jordan, Sean F. Pulleyblank, Coren Dirszowsky, Randy Costa, Pedro Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols |
topic_facet |
Archived airburst sedimentary evidence Younger Dryas Boundary (YDB) /dk/atira/pure/subjectarea/asjc/1900/1904 name=Earth-Surface Processes |
description |
Previous evidence for fragments of a cosmic airburst in the Western Alps has been shown to reside in weathering rinds in surface clasts of Late Glacial (LG) (mid-LG-post Allerød) deposits and in Ah horizons of several associated paleosols. In contrast to outlying strata, Younger Dryas (YD) paleosol horizons contain minor reworked airburst evidence that includes melted quartz/pyroxene grains, carbon spherules, glass-like carbon, and with minor differences in microbial populations. New data from LG paleosol profiles show REEs elevated above crustal abundance in several profiles of mid-Late Glacial age, along with elevated Pt concentrations, similar to those found at the YD Boundary in the Greenland Ice Sheet. Pt/Pd ratios that are elevated above background suggest an exogenic influx of Pt from meteoritic ablation and/or airbursts. An increasing number of localities with sedimentary time lines coeval with an airburst (12.8 ka) indicate the event was intercontinental, producing widespread conflagrations archived in local sediment sequences. This is the first instance worldwide in which evidence of the black mat event has been found both in weathering rinds and in paleosols in the Alps, with such information being applicable to reconnaissance beyond Earth such as in the case of Mars. |
format |
Article in Journal/Newspaper |
author |
Mahaney, William C. Somelar, Peeter West, Allen Krinsley, David H. Allen, Christopher C.R. Pentlavalli, Prasanna Young, Jonathan M. Dohm, James M. LeCompte, Malcolm Kelleher, Brian P. Jordan, Sean F. Pulleyblank, Coren Dirszowsky, Randy Costa, Pedro |
author_facet |
Mahaney, William C. Somelar, Peeter West, Allen Krinsley, David H. Allen, Christopher C.R. Pentlavalli, Prasanna Young, Jonathan M. Dohm, James M. LeCompte, Malcolm Kelleher, Brian P. Jordan, Sean F. Pulleyblank, Coren Dirszowsky, Randy Costa, Pedro |
author_sort |
Mahaney, William C. |
title |
Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols |
title_short |
Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols |
title_full |
Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols |
title_fullStr |
Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols |
title_full_unstemmed |
Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols |
title_sort |
evidence for cosmic airburst in the western alps archived in late glacial paleosols |
publishDate |
2017 |
url |
https://pure.qub.ac.uk/en/publications/79890b50-ffad-4884-bfae-5eeb687e52d0 https://doi.org/10.1016/j.quaint.2017.01.043 http://www.scopus.com/inward/record.url?scp=85011590485&partnerID=8YFLogxK |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Mahaney , W C , Somelar , P , West , A , Krinsley , D H , Allen , C C R , Pentlavalli , P , Young , J M , Dohm , J M , LeCompte , M , Kelleher , B P , Jordan , S F , Pulleyblank , C , Dirszowsky , R & Costa , P 2017 , ' Evidence for cosmic airburst in the Western Alps archived in Late Glacial paleosols ' , Quaternary International , vol. 438 , no. B , pp. 68-80 . https://doi.org/10.1016/j.quaint.2017.01.043 |
op_relation |
https://pure.qub.ac.uk/en/publications/79890b50-ffad-4884-bfae-5eeb687e52d0 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.quaint.2017.01.043 |
container_title |
Quaternary International |
container_volume |
438 |
container_start_page |
68 |
op_container_end_page |
80 |
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1802644977583390720 |