The fine facies grained of the Douleb Member (Units U2 and U3). A: (Mf10) Anhydrite facies. B: (Mf4) Stylolitic packstone with calcispheres (a) and planktonic foraminifera (b), the calcispheres are filled with pyrite, (c) phosphatization of the matrix. C: (Mf12) Sandy packstone with calcispheres (a) and planktonic foraminifera (b), quartz (c). D: (Mf5) Stylolitic packstone with miliolids (a), benthic and planktonic foraminifera (b), phosphatisation (c). E: (Mf8) Two microfacies: 1 a stylolitic packstone rich in oolites (a), echinoderms (b), planktonic foraminifera (c), gastropods and micritized bioclasts, 2 wackestone-packstone rich in echinoderms and foraminifers. F: (Mf8) Oolitic packstone intercalated by a grainstone texture microfacies with small pellets (a) and stylolites (b).