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2013-09-09 - Colloque/Article dans les actes avec comité de lecture - Anglais - 5 page(s)

Dubois Caroline , Deceuster John , Dutilleul Loïc, Njinwoua Brice, Poot Julien, Tsongo Joseph, Kaufmann Olivier , "Detection and mapping of a palaeokarstic network in a quarry work using GPR" in Near Surface Geoscience, Bochum, Allemagne, 2013

  • Codes CREF : Géologie (DI1411)
  • Unités de recherche UMONS : Géologie fondamentale et appliquée (F401)

Abstract(s) :

(Anglais) A Ground Penetrating Radar (GPR) survey was conducted on the bench of a limestone quarry to detect and map a network of weathering. The investigated area is a rectangle of 16.60 m by 10.25m on the Carboniferous limestone from southern Belgium. Profiles are parallel and equally spaced of 25 cm from each other and the distance between each trace along a profile was 2 cm. The GPR survey was conducted using a 250 MHz antenna. After filtering, 2D-sections show very clearly weathered features to at least 10m in depth. A 3D model of the area was created to identify the branches of the weathered network. On time slices, these features are well located throughout the entire model and anthropic cuttings lines are recognized on their total height (~6m).