AndreaBozzo/ceres-open-data-index huggingface dataset:
2021 Arctic Strategic Transportation and Resources (ASTAR) project field geotechnical data and sample descriptions: Wainwright, Atqasuk, and Utqiagvik, North Slope, Alaska

2021 Arctic Strategic Transportation and Resources (ASTAR) project field geotechnical data and sample descriptions: Wainwright, Atqasuk, and Utqiagvik, North Slope, Alaska, Raw Data File 2023-5, presents sample locations and descriptions of 84 samples from power-auger holes, outcrops, test pits, and representative surface exposures from 2021 fieldwork in northwestern Alaska between Wainwright, Atqasuk, and Utqiagvik. This work supports sand and gravel resource assessment for the Arctic Strategic Transportation and Resources (ASTAR) Project. The data are available from the DGGS website: http://doi.org/10.14509/30962.

Tags: aggregate, alluvial deposits, analyses and sampling, analytical results, arctic deposit, atqasuk, avgumun creek, barrow, beach deposits, chert, chukchi sea, clay, coastal and river, coastal plain, construction materials, dggs, engineering geology, facies analysis, geologic, geologic materials, geology, geotechnical, gravel, holocene, hydrology and surficial geology, igklo river, ikpilgok, inaru river, itinik, karmuk point, kolipsun creek, kucheak creek, kugrua bay, kugrua river, kuk river, kukak creek, kunarak creek, kungok river, lake, lake tuvak, maudheim, mikigealiak river, nalimiut point, nigisaktuvik river, north slope, north slope borough, omikmak creek, papigak creek, peard cliff, permafrost and periglacial, pikroka creek, point collie, point marsh, resource assessment, resource information, resources, sample location, sand, sand and gravel, sandstone, sediment, sedimentary, sedimentary rocks, sedimentation, sedimentology, sigeakruk point, silt, sinaruruk river, surface, tachinisok inlet, takrak lake, tikikluk creek, torrent inlet, transportation, transportation corridor, tutolivik, tuvak, unconsolidated deposits, utqiagvik, wainwright, wainwright inlet, walik creek
Organization: State of Alaska
Major-oxide, minor-oxide, and trace-element geochemical data from rocks and stream sediments in the Wrangellia mineral assessment area, Gulkana, Healy, Mount Hayes, and Talkeetna Mountains quadrangles, Alaska

Mineral-resources geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a helicopter-supported geological and geochemical resource assessment project in the Gulkana, Healy, Mount Hayes, and Talkeetna Mountains quadrangles from July 29 through August 16, 2013. The objectives of this assessment were to improve the publicly-available geological, geophysical, and geochemical data in the area of known occurrences in the Mount Hayes Quadrangle, and to extend this coverage and any gained insight westward into the less-explored extension of the Wrangellia terrane. This program of stream-sediment, pan-concentrate, and rock sampling was conducted as part of the State's Strategic Minerals Assessment project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs, and other similarly supply-challenged resources. Highlights of this project include identification, sampling, and characterization of previously unmapped mafic to ultramafic intrusions and Nikolai Greenstone, modern geochemical characterizations of Ni-Cu-Co-PGE, skarn, vein, and basalt-hosted Cu mineralization, and documentation of regional-scale patterns in PGE enrichment across western Wrangellia. The analytical data tables associated with this report are being released in digital format as comma-delimited text (CSV) files.

Tags: amphitheater group, amphitheater mountains, copper, cretaceous, geochemical data, geochemical surveys, geochemistry, gold, greenstone, gulkana quadrangle, healy quadrangle, jurassic, mesozoic, mount hayes quadrangle, nickel, nikolai greenstone, paleozoic, pan concentrates, pennsylvanian, permian, platinum group elements, rare earth elements, silver, strategic and critical minerals assessment project, stream sediments, talkeetna mountains, talkeetna mountains quadrangle, tetelna complex, trace elements, triassic, ultramafic, wrangellia terrane
Organization: State of Alaska
Mercury injection capillary pressure results from outcrop samples in the Indecision Creek Member of the Naknek Formation and the Kaguyak Formation type section

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) is currently engaged in a multi-year study of the hydrocarbon potential of the Tertiary and Mesozoic strata in Cook Inlet basin. This report summarizes mercury injection capillary pressure (MICP) data for 19 samples collected from the Indecision Creek Member of the Naknek Formation and the Kaguyak Formation type section. All samples were analyzed by PetroTech Associates, Houston, TX. PetroTech Associates found that the Kaguyak rocks were generally less porous and permeable compared to the Naknek, although there is some overlap in values. The capillary pressure data for this publication is provided in its native spreadsheet format. The manuscript provides correspondence from PetroTech Associates describing the methods used in MICP analyses of the samples in this report, a brief summary of the data, and references cited.

Tags: alaska peninsula, analyses, analytical results, cook inlet, kaguyak formation, mercury, mercury injection capillary pressure analysis, naknek formation, oil and gas, outcrop samples, permeability, petroleum, petroleum basin study, porosity, reservoir
Organization: State of Alaska
Alaska merged geophysical data grids

Merged grids of residual magnetic intensity, digital terrain model, and apparent resistivity compiled from the Black Mountain, Liscum, Goodpaster, SE extension of Salcha River - Pogo, and Salcha River Pogo geophysical surveys.

Tags: airborne geophysical survey, alaska, electromagnetic data, electromagnetic survey, geophysical map, geophysical survey, geophysics, geophysics search tag, gridded data, magnetic data, magnetic survey, magnetics, state of
Organization: State of Alaska
Engineering-geologic map of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska

During 2009, the Alaska Division of Geological & Geophysical Surveys continued a program, begun in 2006, of reconnaissance mapping of surficial geology in the proposed natural-gas pipeline corridor through the upper Tanana River valley. The study area is a 12-mi-wide (19.3-km-wide) area that straddles the Alaska Highway from the western boundaries of the Tanacross B-3 and A-3 quadrangles near Tetlin Junction eastward to the eastern boundaries of the Nabesna D-1 and C-1 quadrangles along the Canada border. Mapping during 2008-2009 in the Tanacross and Nabesna quadrangles linked with the mapping completed in the Tanacross, Big Delta and Mt. Hayes quadrangles in 2006-2008. Surficial geology was initially mapped in this third corridor segment by interpreting ~1:65,000-scale, false-color, infrared aerial photographs taken in July 1978 and August 1981 and plotting unit boundaries on acetate overlays. Verification of photo mapping was accomplished during the 2008 and 2009 summer field seasons, when map units were described, soil pits were hand dug, and samples were collected for analyses. The engineering-geologic map is derived electronically from the surficial-geologic map and shows the distribution of surficial-geologic and bedrock units grouped genetically with common properties that are typically significant for engineering applications.

Tags: aeolian, alaska, alaska highway corridor, alaska pipeline, beaver creek, canada, chisana river, engineering, engineering geology, eolian, gasline, geologic hazards, geologic map, geology, hazards, holocene, landslide, landslide deposit, loess, midway lake, nabesna, nabesna quadrangle, nabesna river, natural gas, northway, northway junction, periglacial slope failure, permafrost, pipeline, pleistocene, proposed natural gas pipeline, quaternary, retransported loess, scottie creek, state of, tanacross quadrangle, tanana basin, tanana river, taylor highway, tetlin, tetlin junction, tetlin national wildlife refuge, thawing permafrost, translational landslide, transportation corridor, unconsolidated deposits
Organization: State of Alaska
Mercury Injection Capillary Pressure results from outcrop samples in the Homer area of Cook Inlet

The Alaska Division of Geological & Geological Surveys (DGGS) personnel collected rock samples while conducting stratigraphic studies in the Beluga and Sterling Fomrations in the Homer area of Cook Inlet.Funding for this stratigraphic work was provided by Benchmark Oil and Gas, Pioneer Natural Resources, Chevron North American Exploration and production Company, and the State of Alaska.This data set conveys information about samples collected during fieldwork in the Homer area of Cook Inlet.Samples were collected from outcrops for Mercury Injection Capillary Pressure (MICP) analyses.Analytical data from these rock samples are tabulated in this publication.

Tags: beluga formation, cook inlet, homer, mercury, mercury injection capillary pressure analysis, outcrop samples, sterling formation
Organization: State of Alaska
Nyac magnetic airborne geophysical survey data compilation

This geophysical survey is located in southwestern Alaska in the Nyac mining district near Bethel, about 520 kilometers west of Anchorage, Alaska. The data for this magnetic-only survey were collected from August to September 1993. A total of 1366 line kilometers were collected covering 502 square kilometers. Line spacing was 400 meters (m). Data were collected 30 m above the ground surface from a helicopter towed sensor platform ("bird") on a 30 m long line. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/30169.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, bear creek, bethel quadrangle, bonanza creek, cale creek, california creek, dominion creek, dry creek, dugout creek, eagle creek, east fork bear creek, electromagnetic data, electromagnetic survey, eureka creek, exploration, fox creek, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, granite creek, gridded data, line data, magnetic data, magnetic survey, magnetics, marvel creek, marvel dome, max creek, mount plummer, myrtle creek, nippon creek, nugget creek, nyac, otter creek, remote sensing, rex creek, robin creek, rocky creek, russian mission quadrangle, sabula creek, sawpit creek, shamrock creek, slate creek, spruce creek, tuluksak river, wonder creek
Organization: State of Alaska
Summit crater lake observations, and the location, chemistry, and pH of water samples near Mount Chiginagak volcano, Alaska: 2004-2011

Following the May 2005 acid crater lake flood at Chiginagak volcano, DGGS has been monitoring crater lake water that flows into Indecision Creek, Mother Goose Lake, and the King Salmon River.This data table provides information on water samples collected between 2005 and 2011 near Chiginagak volcano, including:sample ID, latitude, longitude, location description, pH, and cation and anion chemistry results.

Tags: chiginagak, inorganic contamination, mother goose hot springs, mother goose lake, ugashik quadrangle, volcano hazards, volcanoes, volcanology, water chemistry, water quality
Organization: State of Alaska
Digital elevation model (DEM) and shaded relief image of Okmok Caldera, 2010

In response to significant morphologic changes in Okmok Caldera due to the phreatomagmatic eruption of Okmok volcano in 2009, a new digital elevation model was acquired to document and quantitatively assess the new volcanic features and altered hydrology within the caldera. This DEM dataset provides elevation data derived from a stereo pair of Worldview-1 satellite images acquired on January 21, 2010. In addition to the DEM, a shaded-relief image is also provided for easy visualization of the data.

Tags: digital elevation model, okmok, okmok caldera, okmok volcano, shaded relief
Organization: State of Alaska
Linedata and gridded data for the aeromagnetic survey of the Holitna basin area, western Alaska; Parts of the Lime Hills and Sleetmute quadrangles

This DVD-ROM publication, GPR 2008-4, contains linedata, gridded data, vector data, and browse graphics produced from a fixed-wing aeromagnetic survey conducted in 1997 of the Holitna Basin area, western Alaska. Aeromagnetic data were acquired for about 3234 sq miles for the Alaska Division of Geological & Geophysical Surveys (DGGS) during this fixed-wing survey.

Tags: aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, alaska, analytic signal, depth interpretation, euler deconvolution, farewell fault, first vertical derivative, fixed wing survey, geophysics, gridded data, holitna basin, horizontal gradient, lime hills quadrangle, linedata, mcgrath mining district, shaded relief, sleetmute quadrangle, state of, yentna mining district
Organization: State of Alaska
Regional tsunami hazard assessment for communities of Bristol Bay and the Pribilof Islands, Alaska

We assess potential tsunami hazards for the communities of Dillingham, Nelson Lagoon, and Platinum in Bristol Bay, and St. Paul and St. George on the Pribilof Islands. The Bristol Bay communities have no high-resolution bathymetry or topography, therefore we conduct tsunami hazard assessments for these areas at the regional scale. The regional approach is a suitable, cost-effective approximation and replacement for high-resolution tsunami inundation maps. The Pribilof Islands communities do have the high-resolution baseline data necessary to produce high-resolution maps. The primary tsunami hazard considered for communities in this report originate from tsunamigenic earthquakes along the Alaska-Aleutian subduction zone and from underwater slope failures in the Bering Sea. Volcanic tsunamis are known to have generated waves up to 12 m in Bristol Bay about 3,500 years ago, but we do not model them in this study due to insufficient data on locations and volumes of these potential hazards. We numerically model tsunamis generated by eight different megathrust earthquakes and two landslide sources, analyze tsunami wave dynamics, and develop tsunami hazard maps. The tectonic tsunami scenarios that we examined simulate Mw 9.2 megathrust earthquakes with a slip distribution in the 5-35 km (3-22 mi) depth range along the Aleutian megathrust. The landslide tsunami scenarios include submarine mass failures on both sides of Umnak Plateau. The maximum assumed runup heights are 1.4 m (4.6 ft) for Dillingham, 3.5 m (11.5 ft) for Nelson Lagoon, and 4.9 m (16 ft) for Platinum. The maximum calculated tsunami runup in St. Paul is 16 m (52.5 ft); it is 5m (16 ft) in St. George, and 11 m (36 ft) near the St. George airport. Results presented here are intended to provide guidance to local emergency management agencies in initial tsunami inundation assessment, evacuation planning, and public education for mitigation of future tsunami hazards.The complete report and digital data are available from the DGGS website: http://doi.org/10.14509/30422.

Tags: bering sea, bristol bay, coastal, coastal and river, dillingham, earthquake, earthquake related slope failure, emergency preparedness, engineering, engineering geology, environmental, fault displacement, faulting, faults, flood, geologic, geologic hazards, geological process, geology, geotechnical, hazards, holocene, inundation, land subsidence, marine geology, modeling, nelson lagoon, neotectonics, platinum, pribilof islands quadrangle, saint george, saint paul, saint paul island, seismic hazards, subsidence, surface, tectonics, topography, tsunami
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Fairbanks Quadrangle, Alaska

In advance of design, permitting, and construction of a pipeline to deliver North Slope natural gas to out-of-state customers and Alaska communities, the Division of Geological & Geophysical Surveys (DGGS) has acquired lidar (light detection and ranging) data along proposed pipeline routes, nearby areas of infrastructure, and regions where significant geologic hazards have been identified. Lidar data will serve multiple purposes, but have primarily been collected to (1) evaluate active faulting, slope instability, thaw settlement, erosion, and other engineering constraints along proposed pipeline routes, and (2) provide a base layer for the state-federal GIS database that will be used to evaluate permit applications and construction plans. The vegetation digital surface models (veg_DSM) represent the above ground elevation of the highest laser return with all vegetation greater than 20 cm above the ground included.

Tags: alaska, alaska highway corridor, alaska pipeline, digital surface model (dsm), fairbanks quadrangle, gasline, geomorphology, lidar, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline, vegetation digital surface model (dsm)
Organization: State of Alaska
Alaska merged geophysical data grids

Merged grids of residual magnetic intensity and apparent resistivity compiled from the Northeast Fairbanks, Fairbanks, Headwaters of the Little Chena, and Circle geophysical surveys.

Tags: airborne geophysical survey, alaska, electromagnetic data, electromagnetic survey, geophysical map, geophysical survey, geophysics, geophysics search tag, gridded data, magnetic data, magnetic survey, magnetics, state of
Organization: State of Alaska
Potential maximum permanent flooding maps for Chenega, Alaska

This digital data distribution package provides post-earthquake shorelines for coastal areas near Chenega, Alaska that become permanently flooded due to coseismic subsidence. Users can access the data, as well as additional metadata, from the DGGS website: http://doi.org/10.14509/29751.

Tags: chenega bay, coastal, coastal and river, engineering, engineering geology, flood, hazards, inundation, tsunami
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery of Ted Stevens Anchorage International Airport, December 6, 2018

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced digital surface models (DSMs) and orthorectified aerial imagery (orthoimagery) over selected locations in the greater Anchorage area following the Mw 7.1 November 30, 2018, Anchorage earthquake. We selected areas of interest (AOIs) based on initial damage reports from the Alaska Department of Transportation & Public Facilities (DOT&PF) and the United States Geological Survey (USGS) in order to document earthquake effects. Aerial photographs collected December 5-6, 2018, were processed using Structure-from-Motion (SfM) photogrammetric techniques to create sub-meter DSMs and orthoimagery. This digital data set covers the Ted Stevens Anchorage International Airport and was collected on December 6, 2018. These data document ground conditions immediately following the 2018 Mw 7.1 Anchorage earthquake. For the purposes of open access to elevation and orthoimagery data sets throughout Alaska, this collection is being released as a Raw Data File with an open end-user license. The data and the data acquisition report are available from the DGGS website: https://elevation.alaska.gov/, http://doi.org/10.14509/30271.

Tags: aerial photography, anchorage, digital surface model (dsm), earthquake related hazards, earthquake related slope failure, elevation, engineering, fracturing, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, hazards, orthoimagery, photogrammetry, raster image, structure from motion, surficial geology, topography
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Talkeetna Quadrangle, Alaska

In advance of design, permitting, and construction of a pipeline to deliver North Slope natural gas to out-of-state customers and Alaska communities, the Division of Geological & Geophysical Surveys (DGGS) has acquired lidar (light detection and ranging) data along proposed pipeline routes, nearby areas of infrastructure, and regions where significant geologic hazards have been identified. Lidar data will serve multiple purposes, but have primarily been collected to (1) evaluate active faulting, slope instability, thaw settlement, erosion, and other engineering constraints along proposed pipeline routes, and (2) provide a base layer for the state-federal GIS database that will be used to evaluate permit applications and construction plans. Lake polygons represent areas of water bodies (excluding streams and rivers) > 150 square meteres, present at the time of lidar data collection.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, lidar, lidar lake polygons, proposed natural gas pipeline, remote sensing, shaded relief, state of, talkeetna quadrangle, topographic map, trans-alaska pipeline
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Beechey Point Quadrangle, Alaska

In advance of design, permitting, and construction of a pipeline to deliver North Slope natural gas to out-of-state customers and Alaska communities, the Division of Geological & Geophysical Surveys (DGGS) has acquired lidar (light detection and ranging) data along proposed pipeline routes, nearby areas of infrastructure, and regions where significant geologic hazards have been identified. Lidar data will serve multiple purposes, but have primarily been collected to (1) evaluate active faulting, slope instability, thaw settlement, erosion, and other engineering constraints along proposed pipeline routes, and (2) provide a base layer for the state-federal GIS database that will be used to evaluate permit applications and construction plans. This digital surface model represents coefficient of variation of the above ground height of vegetation returns.

Tags: alaska, alaska highway corridor, alaska pipeline, beechey point quadrangle, coefficient variation, gasline, geomorphology, lidar, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
Airborne electromagnetic and magnetic survey, Yukon Crossing, interior Alaska

The Alaska Division of Geological & Geophysical Surveys managed the collections of magnetic and frequency domain electromagnetic data to increase geologic understanding of the Yukon Crossing area surrounding mile 56 of the Dalton Highway, interior Alaska. The 162-square-kilometer survey was flown February 25th to March 1st, 2016. The data were collected by CGG using the RESOLVE airborne geophysical survey system with line spacing of: 400 meters (m), or 80 min a smaller area surrounding the Yukon River, and three custom lines along theY ukon River. The data were measured 30 m above the ground surface using a helicopter-towed sensor platform ('bird') on a 30-m-long line. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/29682.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, apparent resistivity contours, apparent resistivity data, apparent resistivity map, apparent resistivity survey, conductivity survey, dalton highway, differential depth, differential resistivity, electromagnetic anomalies, electromagnetic data, electromagnetic data inversion, electromagnetic survey, em1dfm inversion, em1dfm resistivity, engineering geology, exploration, first vertical derivative, five mile airport, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, gridded data, hem survey, hfem survey, inversion, line data, livengood quadrangle, magnetic contours, magnetic data, magnetic survey, magnetics, modeling, radiometric survey, radiometrics, ray river, remote sensing, resistivity, resistivity model, resistivity survey, resolve em system, sightas island, smoothface mountain, stacked multi-channel profiles, trans-alaska pipeline, woodcamp creek, yukon river
Organization: State of Alaska