| Popis: |
In western Provence (France), brittle deformation of Quaternary age occurring in the vicinity of the Nimes and Durance faults has been linked to palaeoseisms of significant magnitude. Our new observations made on the southern rim of the Tertiary Malaucene Basin, in the continuation of a thrust to the north of Mt Ventoux, present evidence for reverse faulting deformation in deposits of a Wurm colluvial fan. The analysis of a trench section provides clear evidence for: (1) the development of two successive surface ruptures and degradation of associated scarps during the Mid-Upper Wurm, and, (2) the continuation of the reverse fault within the Oligocene basement. These tectonic events were associated with earthquakes of at least 6 in magnitude. To cite this article: A. Dutour et al., C. R. Geoscience 334 (2002) 849–856. |
