Figure 13: Paleofacies of the Early Cretaceous. This time period spanned the deposition of the Aarda, Zubair, Buwaib, Biyadh, Lekhwair, and Kharaib formations, and their regional equivalents [MFS K40 to intra-K70]. Sediments were deposited in shallow-marine shelf and intrashelf settings on the Arabian Plate passive margin with Neo-Tethys, and were influenced by the strong clastic sediment supply of the Zubair delta to the west. With information from: Andrews (1992b); Ellis et al. (1996); Guiraud et al. (2001); Hirsch (1990); Holden and Kerr (1997); Koop and Stoneley (1982); Murris (1980); Ponikarov, et al. (1966); Roger et al. (1998); Sawaf et al. (2001); Walley (1998b); and unpublished Saudi Aramco Miscellaneous Report 826 (D.W. Hagen, 1975), 849 and 911 (M.A. Ziegler, 1976, 1982).