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Bazalgette, L. (2004) Relations plissement/fracturation multi échelle dans les multicouches sédimentaires du domaine élastique/Fragile: Accommodation discontinue de la courbure par la fracturation de petite échelle et par les articulations. Possibles implications dynamiques dans les écoulements des reservoirs. Ph.D. Thesis, Université Montpellier II-Sciences et Techniques du Languedoc.

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• TITLE: Structural Pattern Related to Gold Mineralization in the Essakane Area (Northern Burkina Faso, West African Craton)

  AUTHORS: Marc Desire Valea, Benjamin Sawadogo, Kalidou Traoré, Urbain Wenmenga, Naba Seta, Benjamin Allou

  KEYWORDS: Burkina Faso, Essakane, Shear Zone, Deformation Phases, Orogenic Gold

  JOURNAL NAME: Open Journal of Geology, Vol.14 No.9, September 20, 2024

  ABSTRACT: The finite deformation structures recorded in the Essakane area, located in the northeast corner of Burkina Faso, highlight three major compressive deformation phases, successively named D1, D2, and D3. The D1 event phase, trending NE-SW, is characterised by P1 folds and S1 axial plane schistosity. The D2 phase trending NW-SE is characterised by folds P2, schistosity (S2) and shear (C) planes. And the D3 phase trending NNE-SSW to N-S is characterised by P3 folds, crenulation microfolds and S3 spaced schistosity. It has also been noted that gold mineralizations are mainly hosted in quartz, carbonate, pyrite, and arsenopyrite veins. Structural interpretation indicates that these veins are organized into lenticular bodies that were formed during the first two deformation phases (D1 and D2). This suggests a strong structural control typical of orogenic gold concentrations.