1. College of Petroleum Engineering & Geosciences Carbonate Sedimentology Group King Fahd University of Petroleum & Minerals Building 76, KFUPM, Box 5070 Dhahran 31261 Saudi Arabia
2. Université de Bordeaux CNRS, EPOC, EPHE UMR 5805 F-33600 Pessac France
3. Department of Earth Science University of Bergen Allégaten 41 5007 Bergen Norway