Figure F34. Log stratigraphy. A. Hole shape, total gamma ray and potassium content. B. Thorium and uranium. C. Deep, medium, and shallow resistivities. D. Porosity and formation density. E. Capture cross-section (SIGF) and photoelectric effect factor (PEF). F. Downhole compressional velocities (VP) and interval velocity determined by the check shot survey. G. Logging subunits.
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