Figure F46. Comparison of downhole logs and lithology, Hole U1389A. Comparison indicates that sand-rich layers have lower gamma radiation and are less resistive than the clay-rich beds. Clay-rich beds appear to be preferentially recovered in cores. HSGR = standard (total) gamma radiation, GRA = gamma ray attenuation, RT = “true” resistivity, RLA5 = deep apparent resistivity, FMS = Formation MicroScanner. n.m. = nannofossil mud, s.m. = silty mud, s.s. = silty sand.
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