UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism
There is an unexplained terrestrial mass extinction at the Devonian-Carboniferous boundary (359 million years ago). The discovery in east Greenland of malformed land plant spores demonstrates that the extinction was coincident with elevated UV-B radiation demonstrating ozone layer reduction. Mercury...
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ftsouthampton:oai:eprints.soton.ac.uk:441062 2023-08-27T04:09:12+02:00 UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism Marshall, John Lakin, Jon Troth, Ian Wallace-Johnson, Sarah M. 2020-05-27 text https://eprints.soton.ac.uk/441062/ https://eprints.soton.ac.uk/441062/1/Marshall_et_al._aba0768_combined_revised_document_pdf.pdf https://eprints.soton.ac.uk/441062/2/eaba0768.full.pdf en English eng https://eprints.soton.ac.uk/441062/1/Marshall_et_al._aba0768_combined_revised_document_pdf.pdf https://eprints.soton.ac.uk/441062/2/eaba0768.full.pdf Marshall, John, Lakin, Jon, Troth, Ian and Wallace-Johnson, Sarah M. (2020) UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism. Science Advances, 6 (22), [eaba0768]. (doi:10.1126/sciadv.aba0768 <http://dx.doi.org/10.1126/sciadv.aba0768>). cc_by_nc_4 Article PeerReviewed 2020 ftsouthampton https://doi.org/10.1126/sciadv.aba0768 2023-08-03T22:24:33Z There is an unexplained terrestrial mass extinction at the Devonian-Carboniferous boundary (359 million years ago). The discovery in east Greenland of malformed land plant spores demonstrates that the extinction was coincident with elevated UV-B radiation demonstrating ozone layer reduction. Mercury data through the extinction level prove that, unlike other mass extinctions, there were no planetary scale volcanic eruptions. Importantly, the Devonian-Carboniferous boundary terrestrial mass extinction was coincident with a major climatic warming that ended the intense final glacial cycle of the latest Devonian ice age. A mechanism for ozone layer reduction during rapid warming is increased convective transport of ClO. Hence, ozone loss during rapid warming is an inherent Earth system process with the unavoidable conclusion that we should be alert for such an eventuality in the future warming world. Article in Journal/Newspaper East Greenland Greenland University of Southampton: e-Prints Soton Greenland Science Advances 6 22 eaba0768 |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
English |
description |
There is an unexplained terrestrial mass extinction at the Devonian-Carboniferous boundary (359 million years ago). The discovery in east Greenland of malformed land plant spores demonstrates that the extinction was coincident with elevated UV-B radiation demonstrating ozone layer reduction. Mercury data through the extinction level prove that, unlike other mass extinctions, there were no planetary scale volcanic eruptions. Importantly, the Devonian-Carboniferous boundary terrestrial mass extinction was coincident with a major climatic warming that ended the intense final glacial cycle of the latest Devonian ice age. A mechanism for ozone layer reduction during rapid warming is increased convective transport of ClO. Hence, ozone loss during rapid warming is an inherent Earth system process with the unavoidable conclusion that we should be alert for such an eventuality in the future warming world. |
format |
Article in Journal/Newspaper |
author |
Marshall, John Lakin, Jon Troth, Ian Wallace-Johnson, Sarah M. |
spellingShingle |
Marshall, John Lakin, Jon Troth, Ian Wallace-Johnson, Sarah M. UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism |
author_facet |
Marshall, John Lakin, Jon Troth, Ian Wallace-Johnson, Sarah M. |
author_sort |
Marshall, John |
title |
UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism |
title_short |
UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism |
title_full |
UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism |
title_fullStr |
UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism |
title_full_unstemmed |
UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism |
title_sort |
uv-b radiation was the devonian-carboniferous boundary terrestrial extinction kill mechanism |
publishDate |
2020 |
url |
https://eprints.soton.ac.uk/441062/ https://eprints.soton.ac.uk/441062/1/Marshall_et_al._aba0768_combined_revised_document_pdf.pdf https://eprints.soton.ac.uk/441062/2/eaba0768.full.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland |
genre_facet |
East Greenland Greenland |
op_relation |
https://eprints.soton.ac.uk/441062/1/Marshall_et_al._aba0768_combined_revised_document_pdf.pdf https://eprints.soton.ac.uk/441062/2/eaba0768.full.pdf Marshall, John, Lakin, Jon, Troth, Ian and Wallace-Johnson, Sarah M. (2020) UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism. Science Advances, 6 (22), [eaba0768]. (doi:10.1126/sciadv.aba0768 <http://dx.doi.org/10.1126/sciadv.aba0768>). |
op_rights |
cc_by_nc_4 |
op_doi |
https://doi.org/10.1126/sciadv.aba0768 |
container_title |
Science Advances |
container_volume |
6 |
container_issue |
22 |
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eaba0768 |
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1775350353873600512 |