Show simple item record

dc.contributor.authorKasprak, A. H.
dc.contributor.authorPrice-Waldman, R.
dc.contributor.authorWilliford, K. H.
dc.contributor.authorSchoepfer, S. D.
dc.contributor.authorHaggart, J. W.
dc.contributor.authorWard, P. D.
dc.contributor.authorWhiteside, J. H.
dc.contributor.authorSepulveda, Julio C
dc.contributor.authorSummons, Roger E
dc.date.accessioned2017-04-05T15:18:55Z
dc.date.available2017-04-05T15:18:55Z
dc.date.issued2015-02
dc.date.submitted2014-10
dc.identifier.issn0091-7613
dc.identifier.issn1943-2682
dc.identifier.urihttp://hdl.handle.net/1721.1/107847
dc.description.abstractSevere 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.en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (Grant EAR-1147402)en_US
dc.description.sponsorshipExobiology Program (U.S.) (Grants NNX09AM88G and NNA08CN84A)en_US
dc.description.sponsorshipAmerican Association of Petroleum Geologists (Grant-In-Aid)en_US
dc.description.sponsorshipMary-Hill and Bevan M. French Fund for Impact Geologyen_US
dc.language.isoen_US
dc.publisherGeological Society of Americaen_US
dc.relation.isversionofhttp://dx.doi.org/10.1130/g36371.1en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourceOther repositoryen_US
dc.titleEpisodic photic zone euxinia in the northeastern Panthalassic Ocean during the end-Triassic extinctionen_US
dc.typeArticleen_US
dc.identifier.citationKasprak, A. H. et al. “Episodic Photic Zone Euxinia in the Northeastern Panthalassic Ocean during the End-Triassic Extinction.” Geology 43.4 (2015): 307–310.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.mitauthorSepulveda, Julio C
dc.contributor.mitauthorSummons, Roger E
dc.relation.journalGeologyen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsKasprak, A. H.; Sepulveda, J.; Price-Waldman, R.; Williford, K. H.; Schoepfer, S. D.; Haggart, J. W.; Ward, P. D.; Summons, R. E.; Whiteside, J. H.en_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-7144-8537
mit.licenseOPEN_ACCESS_POLICYen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record