Figure F27. A. Part of the natural gamma radiation (NGR) data for Hole 1192A over the depth interval of 0-100 mbsf. The high-frequency noise had a periodicity defined by section length and a count amplitude that increased rapidly toward the end of the section. The exact cause of the problem and its solution remain puzzling. B. Remeasured NGR data for Hole 1192A over the depth interval of 0-100 mbsf. Comparison between the original and remeasured NGR data indicates that real geological information may exist as the lower-frequency component of the signal.

Figure F27. A. Part of the natural gamma radiation (NGR) data for Hole 1192A over the depth interval of 0-100 mbsf. The high-frequency noise had a periodicity defined by section length and a count amplitude that increased rapidly toward the end of the section. The exact cause of the problem and its solution remain puzzling. B. Remeasured NGR data for Hole 1192A over the depth interval of 0-100 mbsf. Comparison between the original and remeasured NGR data indicates that real geological information may exist as the lower-frequency component of the signal.