DC pole | Wartość | Język |
dc.contributor.author | Pisarzowska, Agnieszka | - |
dc.contributor.author | Becker, R. Thomas | - |
dc.contributor.author | Aboussalam, Z. Sarah | - |
dc.contributor.author | Szczerba, Marek | - |
dc.contributor.author | Sobień, Katarzyna | - |
dc.contributor.author | Kremer, Barbara | - |
dc.contributor.author | Owocki, Krzysztof | - |
dc.contributor.author | Racki, Grzegorz | - |
dc.date.accessioned | 2020-06-25T06:10:19Z | - |
dc.date.available | 2020-06-25T06:10:19Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Global and Planetary Change, Vol. 191 (2020), Art. No. 103211 | pl_PL |
dc.identifier.issn | 0921-8181 | - |
dc.identifier.issn | 1872-6364 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/14760 | - |
dc.description.abstract | A positive carbon stable isotope excursion of about 3‰is documented in the topmost lower Frasnian at Padberg,
eastern Rhenish Massif, as a muted record of the worldwide early−middle Frasnian isotopic perturbation
(punctata Event; up to 6–8‰ shift in both δ13Ccarb and δ13Corg elsewhere), comparable with the Appalachian
δ13C curve. This German isotopic signature occurs in a 12 m thick calciturbidite succession and correlates well
with the three-step chemostratigraphic pattern known from the Holy Cross Mountains, Poland. It is especially
clear in the δ13Corg shifts, whilst δ13Ccarb (and elemental geochemical) proxies are partly biased by post-sedimentary
alterations. The New York State, Polish, Nevada and Padberg conodont successions place the onset of
the major positive δ13C excursion slightly beneath the early–middle Frasnian boundary, with Ancyrodella nodosa
(previously Ad. gigas form 1) as the main conodont guide species, and coincident with the Middlesex transgression
and spread of cold, nutrient-rich, poorly oxygenated water masses. In the light of geochemical proxies,
enhanced primary production and oxygen deficiency occurred evidently in the Rhenish Basin during the punctata
Event. Moderate Hg enrichments in the early Middlesex/punctata Event interval suggest a volcanic signature.
However, conclusive data from other regions are required to differentiate between effects of the regionally wellknown
synsedimenary magmatism and of a possible global volcanic trigger for the biogeochemical perturbation. | 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 | Early–middle Frasnian | pl_PL |
dc.subject | Rhenish Massif | pl_PL |
dc.subject | Padberg Formation | pl_PL |
dc.subject | Carbon isotope stratigraphy | pl_PL |
dc.subject | Middlesex/punctata Event | pl_PL |
dc.subject | Trace metal geochemistry | pl_PL |
dc.title | Middlesex/punctata Event in the Rhenish Basin (Padberg section, Sauerland, Germany) – Geochemical clues to the early-middle Frasnian perturbation of global carbon cycle | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1016/j.gloplacha.2020.103211 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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