Field Mapping At Olowalu-Ukumehame Canyon Area (Thomas, 1986)

GEOTHERMAL ENERGY

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Exploration Activity: Field Mapping At Olowalu-Ukumehame Canyon Area (Thomas, 1986)

Exploration Activity Details
Location	Olowalu-Ukumehame Canyon Area
Exploration Technique	Field Mapping
Activity Date
Usefulness	not useful
DOE-funding	Unknown

Notes

Geologic mapping (Diller, 1982) in this area has identified several trachitic and alkalic dikes, plugs, and vents within the area bounded by the canyons (Fig. 21). The frequency distribution of those dikes in the two rift zones was interpreted to indicate that eruptive activity occurred predominantly on the southeast rift zone during the early shield building stages of activity (approximately 1.32 My before present), but began to decline by 1.28 My b.p.; during the final stage of West Maul activity, at 1.16 My b.p., eruptive activity occurred primarily on the southwest rift system. The post-erosional activity on West Maul does not appear to be structurally related to any of the identified rift systems and hence the location of these vents provides little structural information of use in identifying a potential thermal resource.

References

• Donald M. Thomas (1 January 1986) Geothermal Resources Assessment In Hawaii