Biomineralization and global change : A new perspective for understanding the end-Permian extinction
We investigated the kill mechanisms of the end-Permian mass extinction by analyzing patterns in biomineralization of marine invertebrates. The microstructures of Upper Permian brachiopod organocarbonate shells show the demise of the production of fabrics with a columnar layer-which has less organic...
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The Geological Society of America (GSA)
2017
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Online Access: | http://hdl.handle.net/2434/513682 https://doi.org/10.1130/G38430.1 |
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ftunivmilanoair:oai:air.unimi.it:2434/513682 2024-01-14T10:09:38+01:00 Biomineralization and global change : A new perspective for understanding the end-Permian extinction C. Garbelli L. Angiolini S. Z. Shen C . G a r b e l i ; L A n g o ; S Z S h 2017-01 http://hdl.handle.net/2434/513682 https://doi.org/10.1130/G38430.1 eng eng The Geological Society of America (GSA) info:eu-repo/semantics/altIdentifier/wos/WOS:000396124000007 volume:45 issue:1 firstpage:19 lastpage:22 numberofpages:4 journal:GEOLOGY http://hdl.handle.net/2434/513682 doi:10.1130/G38430.1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85008394027 info:eu-repo/semantics/closedAccess Settore GEO/01 - Paleontologia e Paleoecologia info:eu-repo/semantics/article 2017 ftunivmilanoair https://doi.org/10.1130/G38430.1 2023-12-19T23:38:07Z We investigated the kill mechanisms of the end-Permian mass extinction by analyzing patterns in biomineralization of marine invertebrates. The microstructures of Upper Permian brachiopod organocarbonate shells show the demise of the production of fabrics with a columnar layer-which has less organic matrix-in favor of more organic-rich shells at the end of Permian. Also, in the 100-120 k.y. interval prior to the Permian-Triassic boundary (PTB), the Rhynchonellata had small calcite structural units (fibers) and thus a higher shell organic content, whereas the Strophomenata were not able to produce smaller units. This suggests that the two classes had a different capacity to cope with environmental change, with the Rhynchonellata being more able to buffer against pH changes and surviving the PTB, whereas the Strophomenata became extinct. The observed trends in biomineralization are similar to the patterns in extant marine invertebrates exposed to increasing pCO2 and decreasing pH, indicating that ocean acidification could have been one of the kill mechanisms of the mass extinction at the PTB. Article in Journal/Newspaper Ocean acidification The University of Milan: Archivio Istituzionale della Ricerca (AIR) Geology 45 1 19 22 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
Settore GEO/01 - Paleontologia e Paleoecologia |
spellingShingle |
Settore GEO/01 - Paleontologia e Paleoecologia C. Garbelli L. Angiolini S. Z. Shen Biomineralization and global change : A new perspective for understanding the end-Permian extinction |
topic_facet |
Settore GEO/01 - Paleontologia e Paleoecologia |
description |
We investigated the kill mechanisms of the end-Permian mass extinction by analyzing patterns in biomineralization of marine invertebrates. The microstructures of Upper Permian brachiopod organocarbonate shells show the demise of the production of fabrics with a columnar layer-which has less organic matrix-in favor of more organic-rich shells at the end of Permian. Also, in the 100-120 k.y. interval prior to the Permian-Triassic boundary (PTB), the Rhynchonellata had small calcite structural units (fibers) and thus a higher shell organic content, whereas the Strophomenata were not able to produce smaller units. This suggests that the two classes had a different capacity to cope with environmental change, with the Rhynchonellata being more able to buffer against pH changes and surviving the PTB, whereas the Strophomenata became extinct. The observed trends in biomineralization are similar to the patterns in extant marine invertebrates exposed to increasing pCO2 and decreasing pH, indicating that ocean acidification could have been one of the kill mechanisms of the mass extinction at the PTB. |
author2 |
C . G a r b e l i ; L A n g o ; S Z S h |
format |
Article in Journal/Newspaper |
author |
C. Garbelli L. Angiolini S. Z. Shen |
author_facet |
C. Garbelli L. Angiolini S. Z. Shen |
author_sort |
C. Garbelli |
title |
Biomineralization and global change : A new perspective for understanding the end-Permian extinction |
title_short |
Biomineralization and global change : A new perspective for understanding the end-Permian extinction |
title_full |
Biomineralization and global change : A new perspective for understanding the end-Permian extinction |
title_fullStr |
Biomineralization and global change : A new perspective for understanding the end-Permian extinction |
title_full_unstemmed |
Biomineralization and global change : A new perspective for understanding the end-Permian extinction |
title_sort |
biomineralization and global change : a new perspective for understanding the end-permian extinction |
publisher |
The Geological Society of America (GSA) |
publishDate |
2017 |
url |
http://hdl.handle.net/2434/513682 https://doi.org/10.1130/G38430.1 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000396124000007 volume:45 issue:1 firstpage:19 lastpage:22 numberofpages:4 journal:GEOLOGY http://hdl.handle.net/2434/513682 doi:10.1130/G38430.1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85008394027 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1130/G38430.1 |
container_title |
Geology |
container_volume |
45 |
container_issue |
1 |
container_start_page |
19 |
op_container_end_page |
22 |
_version_ |
1788064199568523264 |