Figure F39. Logging stratigraphy. A. Hole shape and total gamma ray (HSGR). B. Computed gamma ray (HCGR) and uranium contribution (HURA). C. Potassium (HFK) and thorium (HTHO) contributions to natural radioactivity. D. Deep (IDPH), intermediate (IMPH), and shallow (SFLU) resistivities. E. Porosity (APLC) and capture cross section (

Figure F39. Logging stratigraphy. A. Hole shape and total gamma ray (HSGR). B. Computed gamma ray (HCGR) and uranium contribution (HURA). C. Potassium (HFK) and thorium (HTHO) contributions to natural radioactivity. D. Deep (IDPH), intermediate (IMPH), and shallow (SFLU) resistivities. E. Porosity (APLC) and capture cross section (

f). F. Formation density (RHOM) and photoelectric factor (PEF). G. Downhole compressional velocity (V_P). H. Logging subunits. I. Lithostratigraphic subunits.