Abstract
Underwater mapping of sea-floor profiles using the Self Contained Underwater Breathing Apparatus was carried out along the rocky coasts of Provence in southern France, west Corsica and the Isle of Elba in Italy. An analysis of 150 underwater profiles in these regions has provided a sequence of sub-aerial erosion notches at common depths of −11, −17, −25, −35, −45, −55, and −100 m. Because notches at similar depths have also been found in the French West Indies, these notches are suggested to have been formed by the same lower eustatic sea levels during the Late Quaternary. The occurrence of submerged sub-aerial erosion notches may indicate uplift and/or subsidence in tectonically active coasts.
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