Article (Scientific journals)
Depositional changes during the Danian-Selandian transition in Loubieng (France), Zumaia (Spain) and Sidi Nasseur (Tunisia): Insights from and limits of rock magnetism
Wouters, Sébastien; Spassov, S.; Martinez, M. et al.
2019In Geological Magazine
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Abstract :
[en] Depositional changes are studied in three sections encompassing the Danian-Selandian transition, Loubieng (France), Zumaia (Spain) and Sidi Nasseur (Tunisia), using magnetic susceptibility as a proxy. Additional rock-magnetic analyses are used to avoid ambiguous interpretation of magnetic susceptibility. The magnetic susceptibility, measured on 90 to 270 samples per section, is mainly controlled by paramagnetic minerals and linked to detrital input. Major increases in the detrital input are correlated to the end of the Latest Danian Event, a hyperthermal, and to the Danian-Selandian boundary. In Loubieng, two gradual increases in magnetic susceptibility within limestones beds precede the major detrital input increases, and start synchronously with the beginning of the Latest Danian Event and the onset of haematite deposition around the Danian-Selandian boundary, respectively. This haematite is suspected to be of primary origin based, among other things, on low magnetic viscosity values, which is used here as an indicator of diagenetic origin in haematite and goethite. The red levels where haematite is interpreted to be of primary origin could be linked to the hyperthermal event previously hypothesized for the basal Selandian. The comparison of the magnetic susceptibility, chemo- and biostratigraphic data between the three sections highlights the condensed nature of the sedimentation around the Danian-Selandian boundary in the sections of the Atlantic realm. The lower part of the Selandian shows a particularly low sedimentation rate at Zumaia compared to Loubieng and Sidi Nasseur. The latter displays the most complete record of the three. © Cambridge University Press 2019.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Wouters, Sébastien ;  Université de Liège - ULiège > Département de géologie > Pétrologie sédimentaire
Spassov, S.;  Royal Meteorological Institute of Belgium, Geophysical Centre, rue du Centre Physique, 1, Dourbes, 5670, Belgium
Martinez, M.;  Univ Rennes, CNRS, Géosciences Rennes, UMR 6118, Rennes, 35000, France
Steurbaut, E.;  Royal Belgian Institute of Natural Sciences, O.D. Earth and History of Life, 29 rue Vautier, Brussels, 1000, Belgium, KU Leuven, Department of Earth and Environmental Sciences, Celestijnenlaan 200E, Leuven, 3001, Belgium
Storme, J.-Y.;  University of Namur, Department of Geology, Institute of Life, Earth and Environment, ILEE, rue de Bruxelles 61, Namur, 5000, Belgium
Yans, J.;  University of Namur, Department of Geology, Institute of Life, Earth and Environment, ILEE, rue de Bruxelles 61, Namur, 5000, Belgium
Devleeschouwer, X.;  Royal Belgian Institute of Natural Sciences, O.D. Earth and History of Life, 29 rue Vautier, Brussels, 1000, Belgium
Language :
English
Title :
Depositional changes during the Danian-Selandian transition in Loubieng (France), Zumaia (Spain) and Sidi Nasseur (Tunisia): Insights from and limits of rock magnetism
Publication date :
2019
Journal title :
Geological Magazine
ISSN :
0016-7568
Publisher :
Cambridge University Press
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 February 2020

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