The Core Gamma Logger provides a genuine breakthrough in core analysis at the well site. The Core Gamma Logger is a portable device that provides gamma ray logs immediately after the core has surfaced and been cut. It is mainly used to correlate cored sections with anticipated lithology by delineating shale from non-shale sections. All rocks contain natural radioactive material, but shales have much higher gamma emissions than others such as sandstone or limestone. Reliable on-site analysis enables operators to make quick, real-time decisions on further coring, testing and well completion activities.