Core photos, Hole 2 (KMA-1), Humu‘ula Groundwater Research Project

Thomas, Donald M.; Lautze, Nicole C.; Haskins, Eric

Core photos, Hole 2 (KMA-1), Humu‘ula Groundwater Research Project

dc.contributor.author	Thomas, Donald M.
dc.contributor.author	Lautze, Nicole C.
dc.contributor.author	Haskins, Eric
dc.contributor.depositor	Kim, Alice
dc.date.accessioned	2020-08-25T10:26:33Z
dc.date.available	2020-08-25T10:26:33Z
dc.date.issued	2016
dc.description	To measure the extent of the regional table found by the first hole, we drilled a second test hole approximately 10 kilometers west of the PTA-2 borehole. Within the top ~1,500 meters the hole did not encounter the regional aquifer, but found a sequence of confined, pressurized aquifers from ~300 meters below the ground surface. Layers of soil, ash, or explosive eruptive deposits confined these aquifers as highly pressurized water trapped between impermeable layers. Hence, as we drilled into the aquifers, water came spouting from the point of entry to up the drill string to several hundred to several thousand feet.
dc.description.abstract	Also known as “PTA” or “Saddle Road Project,” the Humuʻula Groundwater Research Project (HGRP) aimed to research the groundwater resources in the Hawaiʻi Island ‘Saddle’ region between Mauna Loa and Mauna Kea volcanoes by drilling two test holes on Army Garrison Hawaii land. Results include the discovery of: i) groundwater at a much shallower depth than expected, ii) a dike-impounded aquifer, and iii) a potential geothermal reservoir. By using the diamond wireline core drilling technology, we collected a continuous sequence of rock core. We documented our progress in a blog and made a complete stratigraphic record of the region. This continuous stratigraphic sequence contained subaerial shield-stage and post-shield-stage lava rock and ash samples from the Mauna Kea Volcano, documenting the area’s environmental, geologic, hydrologic, and thermal history.
dc.description.sponsorship	The U.S. Army funded the drilling, initial characterization of the core, and ongoing analyses of the fluid. Detailed logging of the core was supported by the National Science Foundation.
dc.format.extent	538 pages
dc.identifier.uri	http://hdl.handle.net/10524/63516
dc.language.iso	en-US
dc.publisher	University of Hawaii at Manoa
dc.publisher	Hawaii Groundwater and Geothermal Resources Center
dc.publisher	Humu‘ula Groundwater Research Project
dc.relation.uri	https://www.higp.hawaii.edu/hggrc/
dc.rights	CC0 1.0 Universal	*
dc.rights.uri	http://creativecommons.org/publicdomain/zero/1.0/	*
dc.subject	core logging
dc.subject	core samples
dc.subject	Hawaii--Mauna Kea
dc.subject	Hawaii--Mauna Loa (Hawaii Island)
dc.subject	Humuʻula Groundwater Research Project
dc.subject	drill cores
dc.subject	well logging
dc.subject	Water Table
dc.subject	Groundwater
dc.subject	Groundwater flow
dc.subject.lcsh	Drill cores -- Hawaii -- Mauna Kea
dc.subject.lcsh	Drill cores -- Hawaii -- Mauna Loa
dc.subject.lcsh	Volcanism -- Hawaii -- Mauna Kea
dc.subject.lcsh	Volcanism -- Hawaii -- Mauna Loa
dc.subject.lcsh	Hawaii -- Mauna Kea
dc.subject.lcsh	Hawaii -- Mauna Loa
dc.title	Core photos, Hole 2 (KMA-1), Humu‘ula Groundwater Research Project
dc.type	Dataset
dc.type	Image
dc.type.dcmi	Dataset