Memorandum on the dipole--dipole resistivity results over the East Mesa geothermal anomaly, Imperial Valley, California

Technical Report · Wed Jan 01 04:00:00 EST 1975

DOI:https://doi.org/10.2172/5012386· OSTI ID:5012386

Hallof, P G; Bell, B S

Some of the results of a resistivity survey completed over the East Mesa geothermal anomaly in Imperial County, California are presented. The area of the heat flow high correlates quite closely with a gravity high and with a seismic ground noise high. A reconnaissance resistivity survey using the Schlumberger electrode configuration was also completed in the Imperial Valley. These data show that a weak resistivity low exists at the East Mesa, at the contact between very low resistivity sediments to the west and slightly higher resistivity rocks to the east. Dipole-dipole resistivity measurements were made through the center of the heat-flow high using x = 2,000', N = 1,2,3,4,5 along lines about five miles long. The results indicate a distinct resistivity low, at depth, that correlates with the East Mesa geothermal high. The details of the resistivity low can be seen much more clearly in the dipole-dipole data than from the reconnaissance survey. (JGB)

• Research Organization: McPhar Geophysics Ltd. (USA)
• OSTI ID: 5012386
• Report Number(s): NP-22853
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150301* -- Geothermal Exploration & Exploration Technology-- Geophysical Techniques & Surveys
COMPARATIVE EVALUATIONS
DIPOLES
EAST MESA GEOTHERMAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRICAL SURVEYS
GEOPHYSICAL SURVEYS
GEOTHERMAL FIELDS
Geothermal Legacy
HEAT FLOW
MULTIPOLES
PHYSICAL PROPERTIES