Constraining reducing conditions in the Prague Basin during the late Silurian Lau/Kozlowskii extinction event

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F24%3A100056" target="_blank" >RIV/60460709:41330/24:100056 - isvavai.cz</a>

Alternative codes found

RIV/00025798:_____/24:10169266

Result on the web

<a href="https://pubs.geoscienceworld.org/gsl/jgs/article-abstract/181/2/jgs2023-108/632201/Constraining-reducing-conditions-in-the-Prague?redirectedFrom=fulltext" target="_blank" >https://pubs.geoscienceworld.org/gsl/jgs/article-abstract/181/2/jgs2023-108/632201/Constraining-reducing-conditions-in-the-Prague?redirectedFrom=fulltext</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1144/jgs2023-108" target="_blank" >10.1144/jgs2023-108</a>

Result language

angličtina

Original language name

Constraining reducing conditions in the Prague Basin during the late Silurian Lau/Kozlowskii extinction event

Original language description

The Silurian was marked by repeated extinctions, carbon cycle volatility and significant intervals of climatic change. The most notable of these events were the Ludfordian Lau/Kozlowskii extinction and the associated Mid-Ludfordian Lau C isotope excursion, both of which have been linked to a period of global cooling and expanded reducing conditions in the global ocean. We present new data that characterize the marine palaeoredox conditions of the Prague Basin, a peri-Gondwanan terrane. We use I/Ca ratios to assess the local redox conditions in a shallow water carbonate succession and Fe speciation and redox-sensitive trace element concentrations to assess the local redox conditions of a deeper water sequence. Consistently low I/Ca values in the shallow water section suggest either persistent local low-oxygen conditions or possibly diagenetic overprinting. Fe speciation data suggest that the bottom water redox conditions in the deeper shelf setting were consistently anoxic with possible intermittent euxinia. Concentrations of redox-sensitive trace elements consistently higher than upper continental crust values also indicate persistent reducing conditions in the deeper part of the basin. These local redox proxy data from the Prague Basin, including trends in new pyrite S isotope (delta S-34(pyr)) data, are consistent with previous findings of the expansion of anoxic and/or euxinic oceanic conditions. These data, derived from a mid-palaeolatitude marine setting, fill an important gap in our current global dataset for this interval of the late Silurian.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GA23-06198S" target="_blank" >GA23-06198S: Response of mid-Paleozoic faunal communities to significant environmental changes: a study of the Mulde, Lau, Choteč events from the Prague Basin</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

JOURNAL OF THE GEOLOGICAL SOCIETY

ISSN

0016-7649

e-ISSN

0016-7649

Volume of the periodical

181

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

17

Pages from-to

1-17

UT code for WoS article

001173741400002

EID of the result in the Scopus database

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