Figure F19. A. Natural gamma radiation (NGR) profile from the MST track compared with the wireline log record for Hole 1229A. B. Expanded scale of Subunits IA and IB showing the four gamma ray cycles described in the text.

Figure F19. A. Natural gamma radiation (NGR) profile from the MST track compared with the wireline log record for Hole 1229A. B. Expanded scale of Subunits IA and IB showing the four gamma ray cycles described in the text.