Acknowledgements

Parts of this work were supported by the BRGM (Bureau des Recherches Géologiques et Minières, Orléans, France) through a regional project on the Maures massif (Directed by Philippe Rossi), and by the Laboratoire de Pétrologie Magmatique (Univ. Paul Cézanne, Marseille, France). Helpful discussions with Georges Bronner, François Buscail, Jean-Jacques Cochemé, André Leyreloup, Claude Tempier, and Luigi Radelli were much appreciated.