The late Aeronian graptolite sedgwickii Event. Associated positive carbon isotope excursion and facies changes in the Prague Synform (Barrandian area, Bohemia)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F12%3A00381216" target="_blank" >RIV/67985831:_____/12:00381216 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41330/12:55161

Výsledek na webu

<a href="http://dx.doi.org/10.1017/S001675681200026X" target="_blank" >http://dx.doi.org/10.1017/S001675681200026X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S001675681200026X" target="_blank" >10.1017/S001675681200026X</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The late Aeronian graptolite sedgwickii Event. Associated positive carbon isotope excursion and facies changes in the Prague Synform (Barrandian area, Bohemia)

Popis výsledku v původním jazyce

Lower Silurian black-shale succession of the Prague Synform provided detailed insight into graptolite faunal dynamics and diversity trends from middle Aeronian diversity maximum through late Aeronian crisis. Graptolite diversity decreased from 33 taxa inthe Lituigraptus convolutus Biozone to 17 taxa in the upper part of the Stimulograptus sedgwickii Biozone and newly erected Lituigraptus rastrum Biozone. The graptolite assemblages of the latter biozones exhibit low species richness along with high dominance. Many graptolite species that became extinct in the early part of the sedgwickii Zone were promptly replaced by new forms. In the later part of the sedgwickii Zone, however, replacement of extinct species by new forms considerably decelerated. Theincreased rate of graptolite extinction in the convolutus-sedgwickii zone boundary beds coincided with subtle changes in black shale lithologies and a positive shift in ?13Corg (for 2.2 >) compared to baseline values. Sea-level drawdown c

Název v anglickém jazyce

The late Aeronian graptolite sedgwickii Event. Associated positive carbon isotope excursion and facies changes in the Prague Synform (Barrandian area, Bohemia)

Popis výsledku anglicky

Lower Silurian black-shale succession of the Prague Synform provided detailed insight into graptolite faunal dynamics and diversity trends from middle Aeronian diversity maximum through late Aeronian crisis. Graptolite diversity decreased from 33 taxa inthe Lituigraptus convolutus Biozone to 17 taxa in the upper part of the Stimulograptus sedgwickii Biozone and newly erected Lituigraptus rastrum Biozone. The graptolite assemblages of the latter biozones exhibit low species richness along with high dominance. Many graptolite species that became extinct in the early part of the sedgwickii Zone were promptly replaced by new forms. In the later part of the sedgwickii Zone, however, replacement of extinct species by new forms considerably decelerated. Theincreased rate of graptolite extinction in the convolutus-sedgwickii zone boundary beds coincided with subtle changes in black shale lithologies and a positive shift in ?13Corg (for 2.2 >) compared to baseline values. Sea-level drawdown c

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geological Magazine

ISSN

0016-7568

e-ISSN

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Svazek periodika

149

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

1089-1106

Kód UT WoS článku

000311058900010

EID výsledku v databázi Scopus

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