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

Result code in 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>
Alternative codes found
RIV/67985831:_____/17:00481048 RIV/60460709:41330/17:71002
Result on the web
<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>

Result language
angličtina
Original language name
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
Original language description
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.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10505 - Geology

Project
<a href="/en/project/GA13-15390S" target="_blank" >GA13-15390S: Re-Os geochronology of ore mineralizations from the Bohemian Massif with possible metallogenic implications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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