Figure F3. Comparison of total gamma ray logs (main passes). Stacked, corrected, and calibrated Multi-Sensor Spectral Gamma Ray Tool (MGT) and Schlumberger gamma ray tool (HNGS) data are shown from 160 to 230 mbsf in Hole 1179D. The correlation is excellent, with higher vertical resolution apparent in the MGT data. High gamma ray peaks are attributed to ash-bearing layers.

Figure F3. Comparison of total gamma ray logs (main passes). Stacked, corrected, and calibrated Multi-Sensor Spectral Gamma Ray Tool (MGT) and Schlumberger gamma ray tool (HNGS) data are shown from 160 to 230 mbsf in Hole 1179D. The correlation is excellent, with higher vertical resolution apparent in the MGT data. High gamma ray peaks are attributed to ash-bearing layers.