Time-Domain Electromagnetics At Hualalai Northwest Rift Area (Thomas, 1986)
Exploration Activity: Time-Domain Electromagnetics At Hualalai Northwest Rift Area (Thomas, 1986)
|Exploration Activity Details|
|Location||Hualalai Northwest Rift Area|
|Exploration Technique||Time-Domain Electromagnetics|
Three time-domain electromagnetic soundings were conducted on the middle northwest rift at elevations of 280-320 m (Fig. 40) (Kauahikaua and Mattice, 1981). These soundings penetrated to a greater depth than the Schlumberger soundings and two of them were able to resolve basement resistivities ranging from 9 to 12 ohm-m at depths of 1500 to 1800 m. One sounding detected a 9 ohm.m layer at 600 m depth that was underlain by a more resistive basement. These results suggest that thermal fluids may be responsible for the low-resistivity basement, whereas the high-resistivity basement could correspond to a dense intrusive body.
- Donald M. Thomas (1 January 1986) Geothermal Resources Assessment In Hawaii