The Cambrian ROECE and DICE carbon isotope excursions in western Gondwana (Montagne Noire, southern France): Implications for regional and global correlations of the Miaolingian Series

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F25%3A00619217" target="_blank" >RIV/67985831:_____/25:00619217 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0031018225002366?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0031018225002366?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.palaeo.2025.112951" target="_blank" >10.1016/j.palaeo.2025.112951</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Cambrian ROECE and DICE carbon isotope excursions in western Gondwana (Montagne Noire, southern France): Implications for regional and global correlations of the Miaolingian Series

Popis výsledku v původním jazyce

The Stage 4 – lower Guzhangian interval, which includes the Drumian and Wuliuan stages is critical for understanding biogeochemical and evolutionary events of the Cambrian. It coincides with the first widespread extinction event of the Phanerozoic associated with the negative Redlichiid – Olenellid Extinction Carbon Isotope Excursion (ROECE). It marks a shift from a lower Cambrian endemic-dominated fauna to a Paleozoic-type cosmopolitan-dominated fauna, and finally, the interval includes the negative Drumian Carbon Isotope Excursion (DICE). The precise identification of the ROECE to DICE interval beyond the tropical belts has been hindered by global regression events and the limited number of geochemical studies. However, rifting in the Mediterranean subprovince of western Gondwana during this transition provides a key sedimentary record of this interval in the southern hemisphere. The Ferrals-les-Montagnes section (Montagne Noire, southern France) offers crucial stratigraphic data for defining ROECE and DICE in western Gondwana. Although significant advances have been made in biostratigraphy, the geochemical characterization of ROECE – DICE carbon isotope excursions remain insufficiently explored, posing challenges for the precise delineation of the Series 2 – Miaolingian and Wuliuan – Drumian boundaries in Montagne Noire, where diagenetic alteration has further compromised fossil preservation. This study presents new paleontological (trilobites, echinoderms), carbon stable isotope (δ13Ccarb, δ13Corg), and total organic carbon (TOC) datasets from the lower to middle Cambrian Ferrals-les-Montagnes succession. These data provide the first reliable ROECE and DICE records in western Gondwana, refining the Series 2 – Miaolingian and Wuliuan – Drumian boundaries in the region, and allow refining regional and global correlations of the Miaolingian Series.

Název v anglickém jazyce

The Cambrian ROECE and DICE carbon isotope excursions in western Gondwana (Montagne Noire, southern France): Implications for regional and global correlations of the Miaolingian Series

Popis výsledku anglicky

The Stage 4 – lower Guzhangian interval, which includes the Drumian and Wuliuan stages is critical for understanding biogeochemical and evolutionary events of the Cambrian. It coincides with the first widespread extinction event of the Phanerozoic associated with the negative Redlichiid – Olenellid Extinction Carbon Isotope Excursion (ROECE). It marks a shift from a lower Cambrian endemic-dominated fauna to a Paleozoic-type cosmopolitan-dominated fauna, and finally, the interval includes the negative Drumian Carbon Isotope Excursion (DICE). The precise identification of the ROECE to DICE interval beyond the tropical belts has been hindered by global regression events and the limited number of geochemical studies. However, rifting in the Mediterranean subprovince of western Gondwana during this transition provides a key sedimentary record of this interval in the southern hemisphere. The Ferrals-les-Montagnes section (Montagne Noire, southern France) offers crucial stratigraphic data for defining ROECE and DICE in western Gondwana. Although significant advances have been made in biostratigraphy, the geochemical characterization of ROECE – DICE carbon isotope excursions remain insufficiently explored, posing challenges for the precise delineation of the Series 2 – Miaolingian and Wuliuan – Drumian boundaries in Montagne Noire, where diagenetic alteration has further compromised fossil preservation. This study presents new paleontological (trilobites, echinoderms), carbon stable isotope (δ13Ccarb, δ13Corg), and total organic carbon (TOC) datasets from the lower to middle Cambrian Ferrals-les-Montagnes succession. These data provide the first reliable ROECE and DICE records in western Gondwana, refining the Series 2 – Miaolingian and Wuliuan – Drumian boundaries in the region, and allow refining regional and global correlations of the Miaolingian Series.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Palaeogeography, Palaeoclimatology, Palaeoecology

ISSN

0031-0182

e-ISSN

1872-616X

Svazek periodika

670

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

112951

Kód UT WoS článku

001472947100001

EID výsledku v databázi Scopus

2-s2.0-105002495117