Abstract

The Shallo-Temp survey is an inexpensive and rapid "first look" geophysical technique. The technique is based on making many soil temperature measurements at 2-m depths over a given exploration area and correcting these measurements for the effects of elevation and surface geologic and meteorologic conditions. Corrections for surface conditions are made with an "annual wave correction model." The difference between the measured and computed 2-m temperature data represents effects of geothermal heat flow. A Shallo-Temp residual map is compared both to a 2-m temperature map for a specific date (September, 1977) and to a mean annual 2-m temperature map for the Coso known geothermal resource area producing the same anomaly pattern in each case. Case studies at Upsal Hogback in Nevada, and Animus Valley in New Mexico support the applicability of the Shallo-Temp technique throughout the Basin and Range Province. The technique developed is not designed to replace reconnaissance drilling but rather help focus standard reconnaissance programs.--Modified journal abstract.

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