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Sedimentary development and magnetic susceptibility evolution of the Frasnian in Western Belgium (Dinant Synclinorium, La Thure section)
Pas, Damien; Da Silva, Anne-Christine; Develeeschouwer, Xavier et al.
2015In Da Silva, Anne-Christine; Whalen; Hladil et al. (Eds.) Magnetic Susceptibility Application: A Window onto Ancient Environments and Climatic Variations
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Abstract :
[en] Recent opening of the La Thure quarry in Western Belgium allowed the collection of new data from a poorly outcropping area of the Belgian Frasnian platform. The studied section covers an interval extending from thefalsiovalis to hassi s.l. Zones. Sedimentological analyses allowed the reconstruction of depositional settings in the northwestern part of the Dinant Synclinorium after the demise of the extended Givetian carbonate platform. Two depositional models are distinguished: (a) siliciclastic drowned platform during the Early Frasnian; and (b) a forereef depositional setting belonging to a rimmed shelf during the Middle Frasnian. Moreover, interpreted depositional settings in the northwestern part of the Dinant Synclinorium allowed to constraint the direction of the main facies belts for the Belgian Frasnian platform. Combination of MS and geochemistry demonstrates the inherent-parallel link existing between variation in MS values and proxy for terrestrial input (such as Si and Al). This observation means that, despite the remagnetization occurring within the Belgian Frasnian lithologies, the main trends in the MS signal from the La Thure section still reflect some syn-sedimentary conditions. The increase in MS and clastic input proxies recorded in distal fore-reef deposit within the punctata Zone are likely to be considered as enhanced by rapid and strong shallowing events recognized in the ‘puncataEvent’ interval.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Pas, Damien ;  Université de Liège - ULiège > Département de géologie > Pétrologie sédimentaire
Da Silva, Anne-Christine  ;  Université de Liège - ULiège > Département de géologie > Pétrologie sédimentaire
Develeeschouwer, Xavier
De Vleeschouwer, David
Labaye, Corentin
Cornet, Pierre
Michel, Jonathan
Boulvain, Frédéric  ;  Université de Liège - ULiège > Département de géologie > Pétrologie sédimentaire
Language :
English
Title :
Sedimentary development and magnetic susceptibility evolution of the Frasnian in Western Belgium (Dinant Synclinorium, La Thure section)
Publication date :
2015
Main work title :
Magnetic Susceptibility Application: A Window onto Ancient Environments and Climatic Variations
Author, co-author :
Da Silva, Anne-Christine  ;  Université de Liège - ULiège > Geology
Whalen
Hladil
Chadimova
Chen
Spassov
Boulvain, Frédéric  ;  Université de Liège - ULiège > Geology
Devleeschouwer
Publisher :
Lyell, United Kingdom
Collection name :
Geological Society, London, Special Publications, 414
Pages :
15-36
Peer reviewed :
Peer reviewed
Name of the research project :
IGCP-580
Funders :
FWO - Fonds Wetenschappelijk Onderzoek Vlaanderen [BE]
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