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The common radioactive elements—potassium, thorium, and uranium—are normally insignificant in [[reservoir fluids]], whereas ...n algorithm converts the energy spectrum to count rates for potassium (%), thorium (ppm), and uranium (ppm). Spectral gamma ray logs are most useful in identi

...volume shale, or volume clay. In some local areas, ratios of potassium to thorium have been successfully used to determine some clay types. However, this cla

...thorium, and uranium to the gamma-ray response || Knowledge of potassium, thorium, and uranium variation in the rocks can be useful for evaluating mineralogy ...he rocks, much of which is emitted by the elements potassium, uranium, and thorium ([[:file:M91Ch6FG43.JPG|Figure 4]]). The geologist typically uses the log t

...and mud weight increase; charts also available for potassium, uranium, and thorium curves.

...f flow within mantle wedge. Boron indicates transportation by fluid, while thorium and beryllium are effectively transported by melts.

...t is know to exchange [[Rare Earth Elements]] (REE) such as [[Uranium]], [[Thorium]], [[Yttrium]],<ref name="Bea. Residence of REE, Y, Th and U...">Bea, F.,19

...els (e.g., total organic carbon [TOC] versus uranium; clay minerals versus thorium or potassium; pyrite and TOC versus bulk density; after Bohacs et al. .<ref

...ast, and generally the most reliable. It can be used with the potassium or thorium curves and with the uranium corrected total gamma ray curve from the spectr

...l gamma ray log is helpful in sandstones containing potassium feldspars or thorium-bearing clays. The natural gamma ray spectra, Pe, density, and neutron expa