(a) Location of the four localities with Eocene red limestones (LR, LC, Apt and SH) displayed on a shaded version of Figure 3 that only highlights Eocene limestones locations. LR: La Rabotte farm, LC: La Coquillade hill, SH: Saint Hilaire monastery, Apt: Apt city; (b) intraclasts in micritic mud at La Coquillade; (c) ooids at La Rabotte farm (same scale as Fig. 5b); (d) karstic surface (arrow) with cavities at La Coquillade; (e) Tera-Wasserburg diagram with isochron age of a secondary cement in a karstic cavity at La Coquillade.