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.date.accessioned 2020-08-25T10:36:04Z
dc.date.available 2020-08-25T10:36:04Z
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. en_US
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. en_US
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. en_US
dc.format.extent 538 pages en_US
dc.identifier.uri http://hdl.handle.net/10125/69419
dc.language.iso en-US en_US
dc.publisher University of Hawaii at Manoa en_US
dc.publisher Hawaii Groundwater and Geothermal Resources Center en_US
dc.publisher Humu‘ula Groundwater Research Project en_US
dc.relation.uri https://www.higp.hawaii.edu/hggrc/ en_US
dc.rights CC0 1.0 Universal *
dc.rights.uri http://creativecommons.org/publicdomain/zero/1.0/ *
dc.subject core logging en_US
dc.subject core samples en_US
dc.subject Hawaii--Mauna Kea en_US
dc.subject Hawaii--Mauna Loa (Hawaii Island) en_US
dc.subject Humuʻula Groundwater Research Project en_US
dc.subject Drill cores en_US
dc.subject well logging en_US
dc.subject Water Table en_US
dc.subject Groundwater en_US
dc.subject Groundwater flow en_US
dc.subject.lcsh Drill cores -- Hawaii -- Mauna Kea en_US
dc.subject.lcsh Drill cores -- Hawaii -- Mauna Loa en_US
dc.subject.lcsh Volcanism -- Hawaii -- Mauna Kea en_US
dc.subject.lcsh Volcanism -- Hawaii -- Mauna Loa en_US
dc.subject.lcsh Hawaii -- Mauna Kea en_US
dc.subject.lcsh Hawaii -- Mauna Loa en_US
dc.title Core photos, Hole 2 (KMA-1), Humu‘ula Groundwater Research Project en_US
dc.type Dataset en_US
dc.type Image en_US
dc.type.dcmi Dataset en_US
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