Page 138 - Basic Well Log Analysis for Geologist
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LITHOLOGY LOGGING AND MAPPING TECHNIQUES
a
Figure 45. Example of a Combination Gamma Ray Neutron-Density Log showing corresponding lithologies. See Chapters [Vand
V about log interpretation.
Example taken from the Ordovician Red River Formation, Richland County, Montana. After Asquith (1979).
Note in log tracks #2 and #3 that the neutron log is represented by a dashed line and the density log is represented by a
solid line (see Chapter IV).
The gamma ray log is in track #1 (see Chapter V).
