Two-pronged kill mechanism at the end-Triassic mass extinction
High-resolution biomarker and compound-specific isotope distributions coupled with the degradation of calcareous fossil remnants reveal that intensive euxinia and decalcification (acidification) driven by Central Atlantic magmatic province (CAMP) activity formed a twopronged kill mechanism at the en...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
GEOLOGICAL SOC AMER, INC
2022
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/LP150100341 http://hdl.handle.net/20.500.11937/90125 |
| _version_ | 1848765331983564800 |
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| author | Fox, Calum P. Whiteside, J.H. Olsen, P.E. Cui, X. Summons, R.E. Idiz, E. Grice, Kliti |
| author_facet | Fox, Calum P. Whiteside, J.H. Olsen, P.E. Cui, X. Summons, R.E. Idiz, E. Grice, Kliti |
| author_sort | Fox, Calum P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | High-resolution biomarker and compound-specific isotope distributions coupled with the degradation of calcareous fossil remnants reveal that intensive euxinia and decalcification (acidification) driven by Central Atlantic magmatic province (CAMP) activity formed a twopronged kill mechanism at the end-Triassic mass extinction. In a newly proposed extinction interval for the basal Blue Lias Formation (Bristol Channel Basin, UK), biomarker distributions reveal an episode of persistent photic zone euxinia (PZE) that extended further upward into the surface waters. In the same interval, shelly taxa almost completely disappear. Beginning in the basal paper shales of the Blue Lias Formation, a Lilliput assemblage is preserved consisting of only rare calcitic oysters (Liostrea) and ghost fossils of decalcified aragonitic bivalves. The stressors of PZE and decalcification parsimoniously explain the extinction event and inform possible combined causes of other biotic crises linked to emplacement of large igneous provinces, notably the end-Permian mass extinction, when PZE occurred on a broad and perhaps global scale |
| first_indexed | 2025-11-14T11:33:34Z |
| format | Journal Article |
| id | curtin-20.500.11937-90125 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:33:34Z |
| publishDate | 2022 |
| publisher | GEOLOGICAL SOC AMER, INC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-901252023-02-15T02:26:21Z Two-pronged kill mechanism at the end-Triassic mass extinction Fox, Calum P. Whiteside, J.H. Olsen, P.E. Cui, X. Summons, R.E. Idiz, E. Grice, Kliti Science & Technology Physical Sciences Geology PHOTIC ZONE EUXINIA ST-AUDRIES BAY JURASSIC BOUNDARY TERRESTRIAL TRANSITION RECOVERY ENGLAND MAXIMUM LINK High-resolution biomarker and compound-specific isotope distributions coupled with the degradation of calcareous fossil remnants reveal that intensive euxinia and decalcification (acidification) driven by Central Atlantic magmatic province (CAMP) activity formed a twopronged kill mechanism at the end-Triassic mass extinction. In a newly proposed extinction interval for the basal Blue Lias Formation (Bristol Channel Basin, UK), biomarker distributions reveal an episode of persistent photic zone euxinia (PZE) that extended further upward into the surface waters. In the same interval, shelly taxa almost completely disappear. Beginning in the basal paper shales of the Blue Lias Formation, a Lilliput assemblage is preserved consisting of only rare calcitic oysters (Liostrea) and ghost fossils of decalcified aragonitic bivalves. The stressors of PZE and decalcification parsimoniously explain the extinction event and inform possible combined causes of other biotic crises linked to emplacement of large igneous provinces, notably the end-Permian mass extinction, when PZE occurred on a broad and perhaps global scale 2022 Journal Article http://hdl.handle.net/20.500.11937/90125 10.1130/G49560.1 English http://purl.org/au-research/grants/arc/LP150100341 http://purl.org/au-research/grants/arc/LE110100119 http://purl.org/au-research/grants/arc/LE100100041 http://purl.org/au-research/grants/arc/LE0882836 http://creativecommons.org/licenses/by/4.0/ GEOLOGICAL SOC AMER, INC fulltext |
| spellingShingle | Science & Technology Physical Sciences Geology PHOTIC ZONE EUXINIA ST-AUDRIES BAY JURASSIC BOUNDARY TERRESTRIAL TRANSITION RECOVERY ENGLAND MAXIMUM LINK Fox, Calum P. Whiteside, J.H. Olsen, P.E. Cui, X. Summons, R.E. Idiz, E. Grice, Kliti Two-pronged kill mechanism at the end-Triassic mass extinction |
| title | Two-pronged kill mechanism at the end-Triassic mass extinction |
| title_full | Two-pronged kill mechanism at the end-Triassic mass extinction |
| title_fullStr | Two-pronged kill mechanism at the end-Triassic mass extinction |
| title_full_unstemmed | Two-pronged kill mechanism at the end-Triassic mass extinction |
| title_short | Two-pronged kill mechanism at the end-Triassic mass extinction |
| title_sort | two-pronged kill mechanism at the end-triassic mass extinction |
| topic | Science & Technology Physical Sciences Geology PHOTIC ZONE EUXINIA ST-AUDRIES BAY JURASSIC BOUNDARY TERRESTRIAL TRANSITION RECOVERY ENGLAND MAXIMUM LINK |
| url | http://purl.org/au-research/grants/arc/LP150100341 http://purl.org/au-research/grants/arc/LP150100341 http://purl.org/au-research/grants/arc/LP150100341 http://purl.org/au-research/grants/arc/LP150100341 http://hdl.handle.net/20.500.11937/90125 |