Figure F50. High-pass filtered porosity, density, and resistivity vs. depth compared with lithology in Hole M0027A. Horizontal red lines = lithologic boundaries. Porosity and density: wet bulk density from samples (thick black line) overlain on gamma density (thin black line) and original gamma density (gray). Porosity (red line) increases to left. Resistivity: black line = original data with section 3s removed (see text), red line = high-pass filtered record. Overall packages with increasing density and decreasing porosity (diagonal arrows) have a tendency to culminate with a sharp decrease in density and increase in porosity (horizontal arrows). These sharp shifts to the left correspond to grain size decreases as determined from lithology and may represent flooding surfaces and/or sequence boundaries. High resistivity brackets the sands between 344 and 410 mbsf. See Figure F4 in the "Methods" chapter for lithology legend. A. 160 to 290 mbsf. (Continued on next three pages.)
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