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CENOMANIAN SANDS AND CLAYS NORTH OF THE VESDRE VALLEY: THE OLDEST KNOWN CRETACEOUS DEPOSITS IN EASTERN BELGIUM

DEMOULIN, Alain ; QUESNEL, Florence ; DUPUIS, Christian ; GERRIENNE, Philippe ; YANS, Johan

Geologica Belgica, 2010, Vol.13 (3), p.241-256 [Peer Reviewed Journal]

Bruxelles: Geologica Belgica

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  • Title:
    CENOMANIAN SANDS AND CLAYS NORTH OF THE VESDRE VALLEY: THE OLDEST KNOWN CRETACEOUS DEPOSITS IN EASTERN BELGIUM
  • Author: DEMOULIN, Alain ; QUESNEL, Florence ; DUPUIS, Christian ; GERRIENNE, Philippe ; YANS, Johan
  • Subjects: Aachen Formation ; Earth Sciences ; Earth, ocean, space ; eastern Belgium ; Exact sciences and technology ; Late Cretaceous ; paleokarst ; pre-Cretaceous paleosurface ; SBL deposits ; Sciences of the Universe
  • Is Part Of: Geologica Belgica, 2010, Vol.13 (3), p.241-256
  • Notes: volume 13 (2010)
    241-256
    number 3
  • Description: 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
  • Publisher: Bruxelles: Geologica Belgica
  • Language: English
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