Figure F7. Comparison of the logs from Holes C0002A and C0002F, showing the correlation between logging Units III and IV. The logging Unit III/IV boundary in Hole C0002A is recognized as a sharp lithologic change interpreted from gamma ray data, whereas in Hole C0002F the boundary was defined by a more subtle change characterized by minor excursions in gamma radioactivity, resistivity, and sonic slowness values. Similar gamma ray trends interpreted to represent interbedded sand and clay are observed for logging Unit IV in Holes C0002A and C0002F. RES_BS = shallow resistivity, RES_BM = medium resistivity, RES_BD = deep resistivity. GR = gamma radiation, RAB = resistivity at the bit. DTCO = compressional wave slowness.
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