Figure 4 c,d. (c) SEM image of fractured rock chip showing internal fabric of a microporous foraminifer (F). Foraminifer consists of subhedral crystals of micrite ranging from 1 to 10 microns in size. Foraminifer is recognizable by a distinctive chambered pattern of intraparticle porosity (arrows) (Saudi Arabia, Berri field, Arab-C). (d) Higher magnification view of foraminifer shown in (c) (SEM image of fractured rock chip).