Field Mapping At Olowalu-Ukumehame Canyon Area (Thomas, 1986)
Exploration Activity: Field Mapping At Olowalu-Ukumehame Canyon Area (Thomas, 1986)
|Exploration Activity Details|
|Location||Olowalu-Ukumehame Canyon Area|
|Exploration Technique||Field Mapping|
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.
- Donald M. Thomas (1 January 1986) Geothermal Resources Assessment In Hawaii