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Cross sections depicting the previously proposed nappe structure. A. Multiple sutures-nappe model (modified after Burg and Matte, 1978). B. Single suture model associated with a basement duplex structure (Matte, 1991). C. Single suture model associated with a stack of three nappes and an “unknown Proterozoic basement” (Faure et al., 2009a, 2009b).
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