Articles | Volume 44, issue 2
https://doi.org/10.5194/jm-44-319-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-44-319-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Refining chitinozoan biostratigraphy through the early and late Aeronian biogeochemical events on Anticosti Island, Quebec, eastern Canada
Fien Marie Raf Jonckheere
CORRESPONDING AUTHOR
Department of Geology, Ghent University, Ghent, 9000, Belgium
Archaeology, Environmental Changes & Geo-chemistry (AMGC), Vrije Universiteit Brussel, Brussels, Belgium
Carolina Klock
Department of Geology, Ghent University, Ghent, 9000, Belgium
André Desrochers
Department of Earth and Environmental Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
Société du patrimoine mondial Anticosti, Port-Menier, QC, Canada,
Pascale Daoust
Société du patrimoine mondial Anticosti, Port-Menier, QC, Canada,
Earth and Planetary Sciences Department, McGill University, Montreal, QC, Canada
Thijs R. A. Vandenbroucke
Department of Geology, Ghent University, Ghent, 9000, Belgium
Related authors
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Carolina Klock, André Desrochers, Patrick I. McLaughlin, Poul Emsbo, Tim De Backer, Fien M. Jonckheere, Cristiana J. P. Esteves, and Thijs R. A. Vandenbroucke
J. Micropalaeontol., 43, 475–495, https://doi.org/10.5194/jm-43-475-2024, https://doi.org/10.5194/jm-43-475-2024, 2024
Short summary
Short summary
Anticosti Island has a well-preserved rock succession throughout the Aeronian–Telychian boundary in the Llandovery Epoch, Silurian period, which includes two important biogeochemical events, the late Aeronian and the Valgu. This study suggests the position of this boundary in Anticosti based on the correlation of the island’s chitinozoan assemblages with the global occurrences, confirming both a remarkable preservation of upper Aeronian rocks and the record of the Valgu event.
Matthias Sinnesael, Alfredo Loi, Marie-Pierre Dabard, Thijs R. A. Vandenbroucke, and Philippe Claeys
Geochronology, 4, 251–267, https://doi.org/10.5194/gchron-4-251-2022, https://doi.org/10.5194/gchron-4-251-2022, 2022
Short summary
Short summary
We used new geochemical measurements to study the expression of astronomical climate cycles recorded in the Ordovician (~ 460 million years ago) geological sections of the Crozon Peninsula (France). This type of geological archive is not often studied in this way, but as they become more important going back in time, a better understanding of their potential astronomical cycles is crucial to advance our knowledge of deep-time climate dynamics and to construct high-resolution timescales.
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Short summary
Anticosti Island holds a well-preserved rock record of the Silurian, offering a unique look at chitinozoan microfossil evolution. During the late Aeronian event, we recognise the emergence and radiation of highly ornamented species, challenging the typical extinction pattern we observe in other Silurian events. This study also fills an important gap in the microfossil record of Anticosti Island, improving our understanding of this critical time.
Anticosti Island holds a well-preserved rock record of the Silurian, offering a unique look at...