The Geothermal Collection
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Item Rock Core Log Report: Well 10, Lānaʻi Drilling Project(University of Hawaii at Manoa, 2019-07-03) Lautze, Nicole C.; Thomas, Donald M.; Haskins, Eric; Kim, Alice; The Hawaii Play Fairway project was funded by the U.S. Department of Energy Geothermal Technologies Office (award DE-EE0006729).; Pūlama Lāna‘iThis unique project seeks to explore the geologic structures that exist in the caldera region of Hawaiian volcanoes; how those structures influence groundwater storage and flow; and how the magmatic heat from Hawaiian shield volcanoes cools over time.Item Core photos, Hole 2 (KMA-1), Humu‘ula Groundwater Research Project(University of Hawaii at Manoa, 2016) Thomas, Donald M.; Lautze, Nicole C.; Haskins, Eric; Kim, AliceAlso 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.Item Core photos, Hole 1 (PTA-2), Humu‘ula Groundwater Research Project(University of Hawaii at Manoa, 2016) Thomas, Donald M.; Lautze, Nicole C.; Haskins, Eric; Kim, AliceAlso 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.Item Preliminary core photos, Well 10, Lanai Island(University of Hawaii at Manoa, 2019) Lautze, Nicole C.; Thomas, Donald M.; Haskins, Eric; Kim, AliceThis unique project seeks to explore the geologic structures that exist in the caldera region of Hawaiian volcanoes; how those structures influence groundwater storage and flow; and how the magmatic heat from Hawaiian shield volcanoes cools over time.Item Archive core photos, Hawaii Scientific Drilling Project(University of Hawaii at Manoa, 1999) DePaulo, Donald J.; Stolper, Edward M.; Thomas, Donald M.; Garcia, Michael O.; Kim, AliceAn abandoned quarry at Hilo International Airport was the site for the second phase of the Hawaii Scientific Drilling Project. From March 13, 1999, to September 27, 1999, using a commercial drilling rig and a hybrid coring system, the project core-drilled a hole to 3,098 meters below sea level (total depth of 3,110 meters) with 98 percent recovery.Item Puna Geothermal Venture supports science summer camps for kids at ‘Imiloa(University of Hawaii Foundation, 2010) University of Hawaii FoundationUH Hilo’s ‘Imiloa Astronomy Center of Hawai‘i received a $5,000 gift from Puna Geothermal Venture (PGV) and its parent company Ormat. The gift subsidized program tuition costs for local schoolchildren to attend ‘Imiloa’s Summer Camp programs focused on sustainable technology. The gift will also enable ‘Imiloa to expand its outreach into school classrooms in the Keaau, Pahoa, Puna areas of the Big Island.Item Gravity and magnetic surveys in support of geothermal exploration on Maui, Hawaii(Indiana University, 1980?) Rudman, Albert J.Detailed gravity and magnetic land surveys were conducted on the island of Maui during the summer of 1980. Part I: the purpose of the study, its scope, and the geology of the area. Part II: the field methods used and the reduction of data to map and cross-section form. Part III: the data analysis to date. Four areas were mapped: Lahaina-Olowalu, Paia-Haiku, Hana, and Makena.Item Hawaii Scientific Drilling Project : core logs and summarizing data 1999(Hawaii Scientific Drilling Project, 1999) DePaolo, Donald J.; Stolper, Edward M.; Thomas, Donald M.Contents: map of drill site location; procedures for core handling, core logging, and sampling; core run depth log; core box record form; unit summary; reference sample record form; lithologic column and summary; and core logsItem Water and gas chemistry from HGP-A geothermal well : January 1980 flow test(Geothermal Resources Council, 1980-09) Thomas, Donald M.During January 1980, a two-week production test was conducted on the geothermal well HGP-A. Brine chemistry indicates that approximately six percent of the well fluids are presently derived from seawater and that this fraction will probably increase during continued production. Reservoir production is indicated to be from two chemically distinct aquifers: one having relatively high salinity and low production and the other having lower salinity and producing the bulk of the discharge.Item Hydrothermal alteration of basalts from Hawaii Geothermal Project Well-A, Kilauea, Hawaii(Geology Journal, 1978-07) Stone, Claudia; Fan, Pow-foongMineralogical examination of basaltic rocks obtained during drilling of a successful 1,962-m-deep geothermal well (HGP-A) in the east rift zone of Kilauea Volcano, Hawaii, reveals three zones of hydrothermal alteration beneath a zone of unaltered lavas. Each alteration zone is characterized by the dominance of a particular mineral: zone 1, montmorillonite; zone 2, chlorite; zone 3, actinolite. Three zones of relative permeability can be tentatively identified on the basis of filled versus partly filled vesicles and fractures. Because the well has not returned to thermal equilibrium as of this writing, stability relations between secondary minerals and temperatures cannot be calculated with accuracy. However, the latest downhole temperatures measured at the boundaries of alteration zones, compared with similar data from high temperature geothermal areas in Iceland, indicate that HGP-A temperatures are considerably higher than those encountered for the same alteration-zone boundaries in Icelandic wells. This indicates that the present-day thermal regime in HGP-A is relatively young and that the hydrothermal minerals probably have not reached equilibrium with existing conditions.