Tectonic trigger to the first major extinction of the Phanerozoic: The early Cambrian Sinsk event
The Cambrian explosion, one of the most consequential biological revolutions in Earth history, occurred in two phases separated by the Sinsk event, the first major extinction of the Phanerozoic. Trilobite fossil data show that Series 2 strata in the Ross Orogen, Antarctica, and Delamerian Orogen, Au...
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craaas:10.1126/sciadv.adl3452 2024-06-23T07:45:50+00:00 Tectonic trigger to the first major extinction of the Phanerozoic: The early Cambrian Sinsk event Myrow, Paul M. Goodge, John W. Brock, Glenn A. Betts, Marissa J. Park, Tae-Yoon S. Hughes, Nigel C. Gaines, Robert R. 2024 http://dx.doi.org/10.1126/sciadv.adl3452 https://www.science.org/doi/pdf/10.1126/sciadv.adl3452 en eng American Association for the Advancement of Science (AAAS) Science Advances volume 10, issue 13 ISSN 2375-2548 journal-article 2024 craaas https://doi.org/10.1126/sciadv.adl3452 2024-06-06T04:01:35Z The Cambrian explosion, one of the most consequential biological revolutions in Earth history, occurred in two phases separated by the Sinsk event, the first major extinction of the Phanerozoic. Trilobite fossil data show that Series 2 strata in the Ross Orogen, Antarctica, and Delamerian Orogen, Australia, record nearly identical and synchronous tectono-sedimentary shifts marking the Sinsk event. These resulted from an abrupt pulse of contractional supracrustal deformation on both continents during the Pararaia janeae trilobite Zone. The Sinsk event extinction was triggered by initial Ross/Delamerian supracrustal contraction along the edge of Gondwana, which caused a cascading series of geodynamic, paleoenvironmental, and biotic changes, including (i) loss of shallow marine carbonate habitats along the Gondwanan margin; (ii) tectonic transformation to extensional tectonics within the Gondwanan interior; (iii) extrusion of the Kalkarindji large igneous province; (iv) release of large volumes of volcanic gasses; and (v) rapid climatic change, including incursions of marine anoxic waters and collapse of shallow marine ecosystems. Article in Journal/Newspaper Antarc* Antarctica AAAS Resource Center (American Association for the Advancement of Science) Science Advances 10 13 |
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AAAS Resource Center (American Association for the Advancement of Science) |
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English |
description |
The Cambrian explosion, one of the most consequential biological revolutions in Earth history, occurred in two phases separated by the Sinsk event, the first major extinction of the Phanerozoic. Trilobite fossil data show that Series 2 strata in the Ross Orogen, Antarctica, and Delamerian Orogen, Australia, record nearly identical and synchronous tectono-sedimentary shifts marking the Sinsk event. These resulted from an abrupt pulse of contractional supracrustal deformation on both continents during the Pararaia janeae trilobite Zone. The Sinsk event extinction was triggered by initial Ross/Delamerian supracrustal contraction along the edge of Gondwana, which caused a cascading series of geodynamic, paleoenvironmental, and biotic changes, including (i) loss of shallow marine carbonate habitats along the Gondwanan margin; (ii) tectonic transformation to extensional tectonics within the Gondwanan interior; (iii) extrusion of the Kalkarindji large igneous province; (iv) release of large volumes of volcanic gasses; and (v) rapid climatic change, including incursions of marine anoxic waters and collapse of shallow marine ecosystems. |
format |
Article in Journal/Newspaper |
author |
Myrow, Paul M. Goodge, John W. Brock, Glenn A. Betts, Marissa J. Park, Tae-Yoon S. Hughes, Nigel C. Gaines, Robert R. |
spellingShingle |
Myrow, Paul M. Goodge, John W. Brock, Glenn A. Betts, Marissa J. Park, Tae-Yoon S. Hughes, Nigel C. Gaines, Robert R. Tectonic trigger to the first major extinction of the Phanerozoic: The early Cambrian Sinsk event |
author_facet |
Myrow, Paul M. Goodge, John W. Brock, Glenn A. Betts, Marissa J. Park, Tae-Yoon S. Hughes, Nigel C. Gaines, Robert R. |
author_sort |
Myrow, Paul M. |
title |
Tectonic trigger to the first major extinction of the Phanerozoic: The early Cambrian Sinsk event |
title_short |
Tectonic trigger to the first major extinction of the Phanerozoic: The early Cambrian Sinsk event |
title_full |
Tectonic trigger to the first major extinction of the Phanerozoic: The early Cambrian Sinsk event |
title_fullStr |
Tectonic trigger to the first major extinction of the Phanerozoic: The early Cambrian Sinsk event |
title_full_unstemmed |
Tectonic trigger to the first major extinction of the Phanerozoic: The early Cambrian Sinsk event |
title_sort |
tectonic trigger to the first major extinction of the phanerozoic: the early cambrian sinsk event |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2024 |
url |
http://dx.doi.org/10.1126/sciadv.adl3452 https://www.science.org/doi/pdf/10.1126/sciadv.adl3452 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Science Advances volume 10, issue 13 ISSN 2375-2548 |
op_doi |
https://doi.org/10.1126/sciadv.adl3452 |
container_title |
Science Advances |
container_volume |
10 |
container_issue |
13 |
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1802642607040364544 |