DC pole | Wartość | Język |
dc.contributor.author | Yudina, Alexandra B. | - |
dc.contributor.author | Racki, Grzegorz | - |
dc.contributor.author | Savage, Norman M. | - |
dc.contributor.author | Racka, Maria | - |
dc.contributor.author | Małkowski, Krzysztof | - |
dc.date.accessioned | 2017-12-02T14:36:25Z | - |
dc.date.available | 2017-12-02T14:36:25Z | - |
dc.date.issued | 2002 | - |
dc.identifier.citation | Acta Palaeontologica Polonica, (2002), vol. 47, no. 2, s. 355-372 | pl_PL |
dc.identifier.issn | 0567-7920 | - |
dc.identifier.issn | 1732-2421 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/515 | - |
dc.description.abstract | The Frasnian-Famennian (F-F) boundary is well biostratigraphically documented in the Palmatolepis-rich deposits exposed along the Syv'yu River in the lower slopes of the Subpolar Urals. The thin-bedded calcareous-clayey-siliceous deep-slope succession of the Vorota Formation appears to represent continuous Domanic-type deposition throughout the world-wide carbonate crisis time, without evidence for the basal Famennian hiatus or a large-scale sedimentary perturbation within a regressive setting. The northernmost Laurussian sequence exhibits many well known signatures throughout the broad F-F timespan: the appearance of organic- and clay-rich deposits, icriodontid and radiolarian blooms, and a correlative shift of several geochemical proxies towards hypoxic and high-productivity regimes, perfectly recorded by positive δ13Ccarb excursions of +3.5%. Integrative biotic, microfacies and geochemical data substantiate a longer-term oceanographic destabilization, attributable to multiple Earth-bound triggering factors in (episodically enhanced?) greenhouse climate and punctuated eustatic sea-level highstands, superimposed on the elevated deposition of organic carbon-rich sediments during the Upper Kellwasser Event. Unsteady eutrophicated, and oxygen-depleted ecosystems during the F-F biotic crisis interval could be assumed, especially when intensified by various spasmodic tectono-volcanic phenomena in the incipiently closing Ural Ocean. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | Carbon Isotopes | pl_PL |
dc.subject | Conodonts | pl_PL |
dc.subject | Famennian | pl_PL |
dc.subject | Frasnian | pl_PL |
dc.subject | Geochemistry | pl_PL |
dc.subject | Kellwasser Crisis | pl_PL |
dc.subject | Microfacies | pl_PL |
dc.subject | Timan-Pechora Basin | pl_PL |
dc.title | The Frasnian-Famennian events in a deep-shelf succession, Subpolar Urals: biotic, depositional, and geochemical records | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
Pojawia się w kolekcji: | Artykuły (WNP)
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