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Fig. 4a

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(à gauche). Fracture fantômisée. L’aspect granuleux des surfaces altérées provient de la mise en relief des entroques, constituant essentiel de ce « Petit-Granit ». Les plages plus claires de la roche expriment le gradient d’altération.

Ghost-rock on fracture. The grain aspect of the weathered surfaces is due to the expression of the crinoids constituting essentially the limestones “Petit-Granit”. The weathered gradient is expressed by the lighter surfaces of the rock.

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