Gamma Log At Raft River Geothermal Area (1979)
Exploration Activity: Gamma Log At Raft River Geothermal Area (1979)
|Exploration Activity Details|
|Location||Raft River Geothermal Area|
|Exploration Technique||Gamma Log|
To allow for the lateral and vertical extrapolation of core and test data and bridged the gap between surface geophysical data and core analyses.
Borehole gamma spectrometry can be used to identify anomalous concentration of uranium, thorium, and potassium which are probably due to transportation by hydrothermal solutions. Computer crossplotting was used as an aid to the identification of such rock types as quartzite, quartz monzonite, and biotite schist in the deeper wells. Alteration of biotite schist to chlorite schist was also recognizable on these logs using computer-based analysis.
- Keys, W. S.; Sullivan, J. K. (1 June 1979) Role of borehole geophysics in defining the physical characteristics of the Raft River geothermal reservoir, Idaho