Quantitative comparison of geological data and model simulations constrains early Cambrian geography and climate
WONG HEARING, Thomas
Universiteit Gent = Ghent University = Université de Gand [UGENT]
University of Leicester
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Universiteit Gent = Ghent University = Université de Gand [UGENT]
University of Leicester
WONG HEARING, Thomas
Universiteit Gent = Ghent University = Université de Gand [UGENT]
University of Leicester
Universiteit Gent = Ghent University = Université de Gand [UGENT]
University of Leicester
DONNADIEU, Yannick
Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement [CEREGE]
Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement [CEREGE]
SEPULCHRE, Pierre
Modélisation du climat [CLIM]
Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
Institut Pierre-Simon-Laplace [IPSL (FR_636)]
Modélisation du climat [CLIM]
Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
Institut Pierre-Simon-Laplace [IPSL (FR_636)]
FRANC, Alain
Biodiversité, Gènes & Communautés [BioGeCo]
Pleiade, from patterns to models in computational biodiversity and biotechnology [PLEIADE]
< Reduce
Biodiversité, Gènes & Communautés [BioGeCo]
Pleiade, from patterns to models in computational biodiversity and biotechnology [PLEIADE]
Language
en
Article de revue
This item was published in
Nature Communications. 2021-06-23, vol. 12
Nature Publishing Group
English Abstract
Marine ecosystems with a diverse range of animal groups became established during the early Cambrian (~541 to~509 Ma). However, Earth's environmental parameters and palaeogeography in this interval of major macro-evolutionary ...Read more >
Marine ecosystems with a diverse range of animal groups became established during the early Cambrian (~541 to~509 Ma). However, Earth's environmental parameters and palaeogeography in this interval of major macro-evolutionary change remain poorly constrained. Here, we test contrasting hypotheses of continental configuration and climate that have profound implications for interpreting Cambrian environmental proxies. We integrate general circulation models and geological observations to test three variants of the 'Antarctocentric' paradigm, with a southern polar continent, and an 'equatorial' configuration that lacks polar continents. This quantitative framework can be applied to other deep-time intervals when environmental proxy data are scarce. Our results show that the Antarctocentric palaeogeographic paradigm can reconcile geological data and simulated Cambrian climate. Our analyses indicate a greenhouse climate during the Cambrian animal radiation, with mean annual sea-surface temperatures between~9°C to~19°C and~30°C to~38°C for polar and tropical palaeolatitudes, respectively.Read less <
Origin
Hal imported