The Plenus Cold Event in NE Bohemia (Bohemian Cretaceous basin) preliminary results
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10474406" target="_blank" >RIV/00216208:11310/23:10474406 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.hgf.vsb.cz/541/cs/o-katedre/Palaeontological-Conference/Abstracts/" target="_blank" >https://www.hgf.vsb.cz/541/cs/o-katedre/Palaeontological-Conference/Abstracts/</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
The Plenus Cold Event in NE Bohemia (Bohemian Cretaceous basin) preliminary results
Popis výsledku v původním jazyce
We present belemnite-bearing strata (Upper Cenomanian) of the Bohemian Cretaceous Basin (BCB) at the onset of the Oceanic Anoxic Event II (OAE2). High-resolution climate records reveal considerable changes in temperature, carbon cycling, and ocean chemistry during the OAE2 (O'Connor et al. 2020). A prominent cooling phase within the greenhouse Cretaceous period - the Plenus Cold Event (PCE) has for the first time been recognised in the English Chalk, based on an invasive Boreal fauna (North Boreal Group) and subsequently by stable-isotope excursions within the OAE2 (Jefferies 1963; O'Connor et al. 2020). The PCE is generally accompanied by faunal shift and temperature decrease worldwide. We have investigated the occurrence and geochemical characteristics of the belemnite species Praeactinocamax plenus (de Blainville, 1827) within several parts of the BCB and we have received relevant data especially from NE part of the BCB. The characterisation of rostra is performed by δ(18)O(bel), δ(13)C(bel) and (87)Sr/(86)Sr. The Plenus beds represent a very narrow stratigraphical interval corresponding to a part of the Metoicoceras geslinianum ammonite Zone. Studied rostra of P. plenus are morphologically consistent with all typical morphotypes of this species distributed from Kazakhstan to Great Britain. A relatively thin horizons bearing belemnite rostra show stratigraphical stability in the NE Bohemia. Based on biostratigraphy and stable isotope curve, these records can be correlated with Jefferies's beds in the Anglo-Paris Basin, Lower Saxony, Northern Peri-Tethys (France, Provence; Gale et Christensen 1996) and other sites.
Název v anglickém jazyce
The Plenus Cold Event in NE Bohemia (Bohemian Cretaceous basin) preliminary results
Popis výsledku anglicky
We present belemnite-bearing strata (Upper Cenomanian) of the Bohemian Cretaceous Basin (BCB) at the onset of the Oceanic Anoxic Event II (OAE2). High-resolution climate records reveal considerable changes in temperature, carbon cycling, and ocean chemistry during the OAE2 (O'Connor et al. 2020). A prominent cooling phase within the greenhouse Cretaceous period - the Plenus Cold Event (PCE) has for the first time been recognised in the English Chalk, based on an invasive Boreal fauna (North Boreal Group) and subsequently by stable-isotope excursions within the OAE2 (Jefferies 1963; O'Connor et al. 2020). The PCE is generally accompanied by faunal shift and temperature decrease worldwide. We have investigated the occurrence and geochemical characteristics of the belemnite species Praeactinocamax plenus (de Blainville, 1827) within several parts of the BCB and we have received relevant data especially from NE part of the BCB. The characterisation of rostra is performed by δ(18)O(bel), δ(13)C(bel) and (87)Sr/(86)Sr. The Plenus beds represent a very narrow stratigraphical interval corresponding to a part of the Metoicoceras geslinianum ammonite Zone. Studied rostra of P. plenus are morphologically consistent with all typical morphotypes of this species distributed from Kazakhstan to Great Britain. A relatively thin horizons bearing belemnite rostra show stratigraphical stability in the NE Bohemia. Based on biostratigraphy and stable isotope curve, these records can be correlated with Jefferies's beds in the Anglo-Paris Basin, Lower Saxony, Northern Peri-Tethys (France, Provence; Gale et Christensen 1996) and other sites.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
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OECD FORD obor
10505 - Geology
Návaznosti výsledku
Projekt
<a href="/cs/project/GC21-30418J" target="_blank" >GC21-30418J: Korelace pozdně křídových sedimentárních archívů severní Sibiře a střední Evropy: záznam skleníkového klimatu vysokých a středních zeměpisných šířek</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů