From field studies to 3D modeling of a high relief Jurassic carbonate platform: the Djebel Bou Dahar (High Atlas Morocco)

• Merino Tomé, O. ; Della Porta, G. ; Kenter, J.A.M. ; Verwer, K. ; Harris, M.P. ; Adams, E. ; Playton, T. ; Lanen, X van ; Corrochano, D. ; Lilly, R. ; Navarro Molina, V. ; Bahamonde, J.R. ^[1]
  1. [1] Universidad de Oviedo

     Universidad de Oviedo

     Oviedo, España

     
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 10, 2008 (Ejemplar dedicado a: VII Congreso Geológico de España), págs. 151-154
• Idioma: español
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• Resumen

  • Studies integrating high-resolution 3D lithofacies distributions and stratal geometries in carbonate platforms are uncommon because of the scarcity of 3D continuous outcrops. The exceptionally exposed seismic-scale carbonate platform of the Djebel Bou Dahar (DBD) (Early Jurassic, southern High Atlas, Morocco) provides those unique conditions. This intact high-relief platform nucleated and evolved in a rift basin during the Hettangian through Pliensbachian, and drowned in the lowermost Toarcian. It measures roughly 35 by 4-10 km and is fully exposed as exhumed topography. Conventional field studies were integrated with digital field technologies (RTK GPS and LIDAR imaging) and highly detailed GISbased geological mapping, in order to capture spatial information on platform architecture, stratal anatomies, sedimentary bodies, the spatial distribution of lithofacies and structural information. This data set is used to build digital outcrop models (DOMs) of the entire carbonate system and local models for areas of special interest, that provide templates to generate full 3D depositional models and populate static geocellular models. Such information is essential to improve concepts of carbonate platform evolution and methods for geostatistical modeling using outcrops, sequence stratigraphy, prediction from seismic reflection data, and ultimately flow models for hydrocarbon reservoirs.