GeoVista - Natural Gamma Probe

Natural gamma measurements are an incredibly popular option across a wide variety of different sectors because of their utility in stratigraphic correlation and as a proxy for lithol-ogy. The isotopes most commonly responsible for natural gamma emissions in geological strata are *K, ^HJ, 232Th, and the radionuclides in the decay chains of these isotopes. The relative concentrations of these radionuclides in strata can provide key information on the lithology; for example, mudrocks with high clay content will contain higher U and Th concentrations than sandstones or carbonate rocks. Similarly, K-rich rocks will also exhibit higher gamma ray counts.

Geovista`s standard Natural Gamma Probe includes a sensitive crystal which counts the ionizing events over time. For high count rate environments, a Geiger-Muller based instrument is available. Finally, a shielded (filtered) version is also available which filters out lower energy gamma rays for use in e.g., uranium exploration.