Figure 10: Paleofacies of the late Middle Jurassic. This time period spanned the deposition of the upper Dhruma, Tuwaiq Mountain Limestone, upper Araej, Hanifa, Naokelekan, and Surmeh formations, and their regional equivalents [MFS J40 to J60]. Differential intraplate subsidence led to the development of intrashelf basins on the Arabian Plate. With information from: Andrews (1992a); Guiraud et al. (2001); Hirsch and Picard (1988); Le Métour et al. (1995); Le Nindre, Manivit et al. (1990b); Murris (1980); Walley (1998b); and unpublished Saudi Aramco Miscellaneous Report 911 (M.A. Ziegler 1982) and 913 (W.J. Koop, 1982).