Figure F84. Summary of natural gamma ray logs in Hole 1201D; total gamma ray emission, potassium, thorium, uranium, and photoelectric effect (PEF) curves are displayed along with the graphic lithology log. The depths of the pipe and the splice between the two uplogs are marked. Logging units are marked, and coarser turbiditic beds a-d are highlighted. In the graphic lithology log, c = clay, s = silt, s = sand, g = gravel.