Article (Scientific journals)
Cenomanian sands and clays north of the Vesdre valley: the oldest known Cretaceous deposits in eastern Belgium
Demoulin, Alain; Quesnel, Florence; Dupuis, Christian et al.
2010In Geologica Belgica, 11 (3), p. 241-256
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Abstract :
[en] A number of motored auger holes have been drilled in 2002 and 2006 in four sand-clay deposits preserved in dissolution pockets within the Dinantian limestones of the watershed north of the Vesdre valley. These deposits of unknown age are currently classified as (Tertiary) SBL in the new geological map of Wallonia. We present detailed lithostratigraphic logs of the deposits and describe the results of sedimentological and mineralogical analyses. In particular, K-Ar dating of neoformed Mn oxides found at the base of one augerhole at Rechain yielded ages ranging from Cenomanian to Santonian, allowing us to place the Rechain and Andrimont deposits within the early Late Cretaceous. This is fully consistent with their topographic location very close beneath the trace of the pre-Cretaceous erosion surface and makes them the westernmost remains of the Hergenrath Member of the Late Cretaceous Aachen Formation. To the west, the Magnée deposit is more “typical SBL”, probably corresponding to the Late Neogene filling of a dissolution pocket by reworked weathering products of the local Cretaceous cover.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Demoulin, Alain ;  Université de Liège - ULiège > Département de géographie > Unité de géographie physique et quaternaire (UGPQ)
Quesnel, Florence
Dupuis, Christian
Gerrienne, Philippe ;  Université de Liège - ULiège > Département de géologie > Paléobotanique - Paléopalynologie - Micropaléontologie (PPM)
Yans, Johan
Language :
English
Title :
Cenomanian sands and clays north of the Vesdre valley: the oldest known Cretaceous deposits in eastern Belgium
Publication date :
2010
Journal title :
Geologica Belgica
ISSN :
1374-8505
eISSN :
2034-1954
Publisher :
Geologica Belgica, Bruxelles, Belgium
Volume :
11
Issue :
3
Pages :
241-256
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 06 May 2010

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