Search publications of the members of the Royal Belgian institute of natural Sciences
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A transient deep-sea circulation switch during Eocene Thermal Maximum 2.
- Ever since its discovery, Eocene Thermal Maximum 2 (ETM2; ~53.7 Ma) has been considered as one of the “little brothers” of the Paleocene-Eocene Thermal Maximum (PETM; ~56 Ma) as it displays similar characteristics including abrupt warming, ocean acidification, and biotic shifts. One of the remaining key questions is what effect these lesser climate perturbations had on ocean circulation and ventilation and, ultimately, biotic disruptions. Here we characterize ETM2 sections of the NE Atlantic (Deep Sea Drilling Project Sites 401 and 550) using multispecies benthic foraminiferal stable isotopes, grain size analysis, XRF core scanning, and carbonate content. The magnitude of the carbon isotope excursion (0.85–1.10‰) and bottom water warming (2–2.5°C) during ETM2 seems slightly smaller than in South Atlantic records. The comparison of the lateral δ13C gradient between the North and South Atlantic reveals that a transient circulation switch took place during ETM2, a similar pattern as observed for the PETM. New grain size and published faunal data support this hypothesis by indicating a reduction in deepwater current velocity. Following ETM2, we record a distinct intensification of bottom water currents influencing Atlantic carbonate accumulation and biotic communities, while a dramatic and persistent clay reduction hints at a weakening of the regional hydrological cycle. Our findings highlight the similarities and differences between the PETM and ETM2. Moreover, the heterogeneity of hyperthermal expression emphasizes the need to specifically characterize each hyperthermal event and its background conditions to minimalize artifacts in global climate and carbonate burial models for the early Paleogene.
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Benthic foraminiferal and isotopic patterns during the Early Eocene Climatic Optimum (Aktulagay section, Kazakhstan)
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Eocene hyperthermals in the North Sea Basin: a Belgian Ypresian perspective
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Temperature, seasonality and salinity history of the early Eocene North Sea Basin inferred from fish otoliths and mollusks
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Temperature, seasonality and salinity history of the early Eocene North Sea Basin inferred from fish otoliths and mollusks.
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Eocene hyperthermals in the North Sea Basin: a Belgian Ypresian perspective.
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Benthic foraminiferal and isotopic patterns during the Early Eocene Climatic Optimum (Aktulagay section, Kazakhstan).
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Benthic foraminiferal and isotopic patterns during the Early Eocene Climatic Optimum (Aktulagay section, Kazakhstan).
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Late Quaternary (15 ka to present) development of a sandy landscape in the Mol area, Campine region, NE Belgium
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Présence ignorée de Aplus assimilis (Reeve, 1846) (Gastropoda, Pisaniidae) en Méditerranée pendant quatre décennies
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Invasion of the poles
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de GERLACHE de GOMERY, Gaston, Adolphe, Auguste, baron, explorateur polaire, aviateur, docteur en droit, dirigeant de sociétés, né à Ixelles le 17 novembre 1919, décédé à Mullem le 13 juillet 2006.
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Typpe material of taxa described by Cousin and Jousseaume in the Royal Belgian Institute of Natural Sciences, Brussels
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Revision of the genus Archetypus Thomson , 1861 (Coleoptera, Cerambycidae, Prioninae)
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Three in one: molecular phylogeny of the genus Helodrilus (Crassiclitellata: Lumbricidae) with a description of two new genera and two new species
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Need for harmonized long-term multi-lake monitoring of African Great Lakes
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Somewhere I belong: phylogeny and morphological evolution in a species-rich lineage of ectoparasitic flatworms infecting cichlid fishes
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Three new Hymedesmia Bowerbank, 1864 (Demospongiae, Poecilosclerida, Hymedesmiidae) from the Southeast Pacific (Peru and Chile)
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De nachtvlinders (Lepidoptera) waargenomen tijdens het inventarisatieproject in de Botanische Tuin Jean Massart te Oudergem (Brussels Hoofdstedelijk Gewest)
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Notes on the genera Punctoterebra and Myurellopsis: Punctoterebra succincta (Gmelin, 1791), P. textilis (Hinds, 1844) and M. parkinsoni (Bratcher & Cernohorsky, 1976) revisited, with the description of six new species
