Geological interpretation of spectral gamma ray (SGR) logging in selected boreholes

This paper presents the interpretation of the spectral gamma ray (SGR) log focused on geological analysis regarding determination of the clay content in studied deposits, evaluation of the types of clay minerals, identification of fissure zones, determination of the organic matter content, determination of radiogenic heat value secreted during the decay of radioactive elements, and the characteristics of sedimentary conditions. The method was tested on data collected from five boreholes.