Synchronism of the Siberian Traps and the Permian-Triassic Boundary
Uranium-lead ages from an ion probe were taken for zircons from the ore-bearing Noril'sk I intrusion that is comagmatic with, and intrusive to, the Siberian Traps. These values match, within an experimental error of ±4 million years, the dates for zircons extracted from a tuff at the Permian-Tr...
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American Association for the Advancement of Science (AAAS)
1992
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Online Access: | http://dx.doi.org/10.1126/science.258.5089.1760 https://www.science.org/doi/pdf/10.1126/science.258.5089.1760 |
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craaas:10.1126/science.258.5089.1760 2024-06-23T07:53:40+00:00 Synchronism of the Siberian Traps and the Permian-Triassic Boundary Campbell, I. H. Czamanske, G. K. Fedorenko, V. A. Hill, R. I. Stepanov, V. 1992 http://dx.doi.org/10.1126/science.258.5089.1760 https://www.science.org/doi/pdf/10.1126/science.258.5089.1760 en eng American Association for the Advancement of Science (AAAS) Science volume 258, issue 5089, page 1760-1763 ISSN 0036-8075 1095-9203 journal-article 1992 craaas https://doi.org/10.1126/science.258.5089.1760 2024-06-13T04:01:23Z Uranium-lead ages from an ion probe were taken for zircons from the ore-bearing Noril'sk I intrusion that is comagmatic with, and intrusive to, the Siberian Traps. These values match, within an experimental error of ±4 million years, the dates for zircons extracted from a tuff at the Permian-Triassic (P-Tr) boundary. The results are consistent with the hypothesis that the P-Tr extinction was caused by the Siberian basaltic flood volcanism. It is likely that the eruption of these magmas was accompanied by the injection of large amounts of sulfur dioxide into the upper atmosphere, which may have led to global cooling and to expansion of the polar ice cap. The P-Tr extinction event may have been caused by a combination of acid rain and global cooling as well as rapid and extreme changes in sea level resulting from expansion of the polar ice cap. Article in Journal/Newspaper Ice cap Polar Ice Cap AAAS Resource Center (American Association for the Advancement of Science) Science 258 5089 1760 1763 |
institution |
Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Uranium-lead ages from an ion probe were taken for zircons from the ore-bearing Noril'sk I intrusion that is comagmatic with, and intrusive to, the Siberian Traps. These values match, within an experimental error of ±4 million years, the dates for zircons extracted from a tuff at the Permian-Triassic (P-Tr) boundary. The results are consistent with the hypothesis that the P-Tr extinction was caused by the Siberian basaltic flood volcanism. It is likely that the eruption of these magmas was accompanied by the injection of large amounts of sulfur dioxide into the upper atmosphere, which may have led to global cooling and to expansion of the polar ice cap. The P-Tr extinction event may have been caused by a combination of acid rain and global cooling as well as rapid and extreme changes in sea level resulting from expansion of the polar ice cap. |
format |
Article in Journal/Newspaper |
author |
Campbell, I. H. Czamanske, G. K. Fedorenko, V. A. Hill, R. I. Stepanov, V. |
spellingShingle |
Campbell, I. H. Czamanske, G. K. Fedorenko, V. A. Hill, R. I. Stepanov, V. Synchronism of the Siberian Traps and the Permian-Triassic Boundary |
author_facet |
Campbell, I. H. Czamanske, G. K. Fedorenko, V. A. Hill, R. I. Stepanov, V. |
author_sort |
Campbell, I. H. |
title |
Synchronism of the Siberian Traps and the Permian-Triassic Boundary |
title_short |
Synchronism of the Siberian Traps and the Permian-Triassic Boundary |
title_full |
Synchronism of the Siberian Traps and the Permian-Triassic Boundary |
title_fullStr |
Synchronism of the Siberian Traps and the Permian-Triassic Boundary |
title_full_unstemmed |
Synchronism of the Siberian Traps and the Permian-Triassic Boundary |
title_sort |
synchronism of the siberian traps and the permian-triassic boundary |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1992 |
url |
http://dx.doi.org/10.1126/science.258.5089.1760 https://www.science.org/doi/pdf/10.1126/science.258.5089.1760 |
genre |
Ice cap Polar Ice Cap |
genre_facet |
Ice cap Polar Ice Cap |
op_source |
Science volume 258, issue 5089, page 1760-1763 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.258.5089.1760 |
container_title |
Science |
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258 |
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5089 |
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1760 |
op_container_end_page |
1763 |
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1802645444538400768 |