A detailed aerial gamma-ray spectrometric survey of the Jabal Ashirah area in the southeastern Arabian Shield has been analyzed using computer-classification algorithms. The analysis resulted in maps that show radiometric map units and gamma-ray anomalies indicating the presence of possible concentrations of potassium and uranium. The radiometric-unit map was interpreted to 'produce a simplified radiolithic map that was correlated with the mapped geology. The gamma-ray data show uranium anomalies that coincide with a tin-bearing granite, but known gold and nickel mineralization do not have any associated gamma-ray signatures.

Open-File Report↗

USGS1985

Aerial radiometric contour maps of Ohio

No abstract available.

Ohio↗

USGS1982

Interpretation of aerial radiometric data for the Lake City Caldera and vicinity, Hinsdale, San Juan, and Ouray counties, Colorado

No abstract available.

Colorado↗

USGS1982

Image production equipment and procedures

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Open-File Report↗

USGS1982

A method for designing film transfer functions for use in an image processing laboratory

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Open-File Report↗

USGS1980

Radioactivity method

Radioactivity measurements have played an important role in geophysics since about 1935, and they have increased in importance to the present. The most important areas of application have been in petroleum and uranium exploration. Radioactivity measurements have proved useful in geologic mapping, as well as in specialized applications such as reactor-site monitoring. The technological development of the method has reached a plateau, and the future of the method for some applications will depend upon development of more sophisticated data processing and interpretation.

Geophysics↗