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https://hdl.handle.net/2440/94827
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dc.contributor.author | Kasprak, A. | - |
dc.contributor.author | Sepulveda, J. | - |
dc.contributor.author | Price-Waldman, R. | - |
dc.contributor.author | Williford, K. | - |
dc.contributor.author | Schoepfer, S. | - |
dc.contributor.author | Haggart, J. | - |
dc.contributor.author | Ward, P. | - |
dc.contributor.author | Summons, R. | - |
dc.contributor.author | Whiteside, J. | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Geology (Boulder), 2015; 43(4):307-310 | - |
dc.identifier.issn | 0091-7613 | - |
dc.identifier.issn | 1943-2682 | - |
dc.identifier.uri | http://hdl.handle.net/2440/94827 | - |
dc.description.abstract | Severe changes in ocean redox, nutrient cycling, and marine productivity accompanied most Phanerozoic mass extinctions. However, evidence for marine photic zone euxinia (PZE) as a globally important extinction mechanism for the end-Triassic extinction (ETE) is currently lacking. Fossil molecular (biomarker) and nitrogen isotopic records from a sedimentary sequence in western Canada provide the first conclusive evidence of PZE and disrupted biogeochemistry in neritic waters of the Panthalassic Ocean during the end Triassic. Increasing water-column stratification and deoxygenation across the ETE led to PZE in the Early Jurassic, paralleled by a perturbed nitrogen cycle and ecological turnovers among noncalcifying groups, including eukaryotic algae and prokaryotic plankton. If such conditions developed widely in the Panthalassic Ocean, PZE might have been a potent mechanism for the ETE. | - |
dc.description.statementofresponsibility | Alex H. Kasprak, Julio Sepúlveda, Rosalyn Price-Waldman, Kenneth H. Williford, Shane D. Schoepfer, James W. Haggart, Peter D. Ward, Roger E. Summons, and Jessica H. Whiteside | - |
dc.language.iso | en | - |
dc.publisher | Geological Society of America | - |
dc.rights | © 2015 Geological Society of America | - |
dc.source.uri | http://dx.doi.org/10.1130/g36371.1 | - |
dc.title | Episodic photic zone euxinia in the northeastern Panthalassic Ocean during the end-Triassic extinction | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1130/G36371.1 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 3 Earth and Environmental Sciences publications |
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