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Exceptionally favourable life conditions for macrobenthos during the Late Cenomanian OAE-2 event : ichnological record from the Bonarelli Level in the Grajcarek Unit, Polish Carpathians

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dc.contributor.author Uchman, Alfred [SAP11011964] pl
dc.contributor.author Rodríguez-Tovar, Francisco Javier pl
dc.contributor.author Oszczypko, Nestor [SAP11011866] pl
dc.date.accessioned 2015-06-09T08:29:00Z
dc.date.available 2015-06-09T08:29:00Z
dc.date.issued 2013 pl
dc.identifier.issn 0195-6671 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/9067
dc.language eng pl
dc.rights Dodaję tylko opis bibliograficzny *
dc.rights.uri *
dc.title Exceptionally favourable life conditions for macrobenthos during the Late Cenomanian OAE-2 event : ichnological record from the Bonarelli Level in the Grajcarek Unit, Polish Carpathians pl
dc.type JournalArticle pl
dc.description.physical 1-10 pl
dc.abstract.en Pelagic and hemipelagic sediments of the Bonarelli Level (uppermost Cenomanian) in the Sztolnia section (Grajcarek Unit, Polish Carpathians) contain trace fossils of the Zoophycos ichnofacies, including (in descending order of abundance): Chondrites (smaller and larger forms), Planolites, Thalassinoides, Palaeophycus, Taenidium, Teichichnus, and Zoophycos. They occur in thick bioturbated layers, which are interbedded with rare, thin layers of unbioturbated black shales. The black shale layers mark the Bonarelli Level and are interpreted as a record of anoxia or dysoxia. Coeval sections in the Western Tethys contain similar trace fossils but they are less abundant and these sections are characterized by thicker unbioturbated black shale layers and thinner bioturbated layers. This confirms the exceptionally favourable life conditions in sediments of the Sztolnia section, which do not record strong global anoxia during the OAE-2 event. Such favourable conditions were probably caused by effective oxygenation of pore waters and deep burial of organic matter, which are a consequence of high rates of accumulation and the palaeogeographical location of the section on a flank of a submarine high, under strong circulation. pl
dc.subject.en oceanic anoxic events pl
dc.subject.en ichnology pl
dc.subject.en Cretaceous pl
dc.subject.en Carpathians pl
dc.description.volume 46 pl
dc.identifier.doi 10.1016/j.cretres.2013.08.007 pl
dc.identifier.eissn 1095-998X pl
dc.title.journal Cretaceous Research pl
dc.language.container eng pl
dc.affiliation Wydział Biologii i Nauk o Ziemi : Instytut Nauk Geologicznych pl
dc.subtype Article pl
dc.rights.original bez licencji pl
.pointsMNiSW [2013 A]: 35


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