Figure F42. Correlation of downhole logs and lithology (240–253 mbsf) in Hole U1390A indicates that sand-rich layers have lower natural gamma radiation (NGR) and are more resistive than neighboring clay-rich beds (in contrast to some of the low–standard (total) gamma radiation [HSGR] layers in Subunit 1A). WRMSL = Whole-Round Multisensor Logger, HROM = high-resolution bulk density log, RT = “true” resistivity, FMS = Formation MicroScanner.
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