Figure 2-8. Unit A/B: X-ray radiographs of cores from lithologic units A and B in MP288c1. Each picture is a reproduction of the X-ray radiograph negative. Light tones represent areas or features that are dense to the penetration of X-rays. Unit B is represented by high-angle foreset laminations containing abundant abraded shell fragments (radiographs c and d). These shell-rich deposits are overlain by horizontally bedded finer sand (radiograph b). Unit A represents deposition at or near the modern seafloor. Radiograph is a highly burrowed and shell-rich sediment composed mostly of silt and fine sand. This radiograph is typical of sediments near the sediment-water interface at the MP288c1 site.