Trace element variations as a proxy for reconstruction of palaeoenvironmental changes during the late Aeronian faunal and carbon isotope perturbations: new data from the peri-Gondwanan region

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F17%3A00000337" target="_blank" >RIV/00025798:_____/17:00000337 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985831:_____/17:00481048 RIV/60460709:41330/17:71002

Výsledek na webu

<a href="https://gq.pgi.gov.pl/article/view/25511/pdf_1308" target="_blank" >https://gq.pgi.gov.pl/article/view/25511/pdf_1308</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.7306/gq.1313" target="_blank" >10.7306/gq.1313</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Trace element variations as a proxy for reconstruction of palaeoenvironmental changes during the late Aeronian faunal and carbon isotope perturbations: new data from the peri-Gondwanan region

Popis výsledku v původním jazyce

Trace element variations in the upper Aeronian (Llandovery, lower Silurian), deep-water, black shale succession of the Barrandian area (Perunica) were studied across an interval associated with a graptolite mass extinction and global, positive carbon isotope anomaly. The main aim of the paper is to test whether distinct changes in graptolite diversity during late Aeronian were linked with changes in deep seawater oxygenation. Using multiple geochemical proxies we documented high-frequency changes in oxygenation of seawater from sediments of the L. convolutus to R. linnaei (S. guerichi) biozones. Detailed comparison of graptolite diversity with those high-frequency oxygenation changes revealed that most of the long-term and step-wise late Aeronian graptolite crisis was not significantly influenced by changes in oxygen level. The collapse of global carbon cycle during the late Aeronian probably only temporarily increased extinction rate of the long-term graptolite crisis and considerably decreased evenness of the uppermost Aeronian graptolite communities. The Aeronian graptolite mass extinction was thus primarily driven by other biotic and/or abiotic causes.

Název v anglickém jazyce

Trace element variations as a proxy for reconstruction of palaeoenvironmental changes during the late Aeronian faunal and carbon isotope perturbations: new data from the peri-Gondwanan region

Popis výsledku anglicky

Trace element variations in the upper Aeronian (Llandovery, lower Silurian), deep-water, black shale succession of the Barrandian area (Perunica) were studied across an interval associated with a graptolite mass extinction and global, positive carbon isotope anomaly. The main aim of the paper is to test whether distinct changes in graptolite diversity during late Aeronian were linked with changes in deep seawater oxygenation. Using multiple geochemical proxies we documented high-frequency changes in oxygenation of seawater from sediments of the L. convolutus to R. linnaei (S. guerichi) biozones. Detailed comparison of graptolite diversity with those high-frequency oxygenation changes revealed that most of the long-term and step-wise late Aeronian graptolite crisis was not significantly influenced by changes in oxygen level. The collapse of global carbon cycle during the late Aeronian probably only temporarily increased extinction rate of the long-term graptolite crisis and considerably decreased evenness of the uppermost Aeronian graptolite communities. The Aeronian graptolite mass extinction was thus primarily driven by other biotic and/or abiotic causes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/GA13-15390S" target="_blank" >GA13-15390S: Re-Os geochronologie rudních mineralizací Českého masivu a důsledky pro jejich metalogenezi</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Geological Quarterly

ISSN

1641-7291

e-ISSN

—

Svazek periodika

61

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

8

Strana od-do

91-98

Kód UT WoS článku

000394563700007

EID výsledku v databázi Scopus

—