AndreaBozzo/ceres-open-data-index huggingface dataset:
Qualitative assessment of composition and reservoir quality of Albian-Cenomanian Nanushuk Formation sandstones, measured outcrop sections, central North Slope, Alaska

Raw Data File 2021-13, Qualitative assessment of composition and reservoir quality of Albian-Cenomanian Nanushuk Formation sandstones, measured outcrop sections, central North Slope, Alaska, presents a qualitative appraisal of thin sections collected from Nanushuk outcrops to ascertain their reservoir potential. The DGGS sample collection was searched for petrographic thin sections collected from stratigraphic sections of the Nanushuk Formation measured by David LePain working with various colleagues, including Russ Kirkham, Paul Decker, Dave Houseknecht, and Nina Harun over the past 22 years. The search yielded 264 thin sections of Nanushuk siltstone and sandstone. Three additional thin sections of the Seabee Formation mudstone, siltstone, and sandstone were collected from the upper portion of a measured section that straddles the Nanushuk - Seabee contact. These 267 samples were collected from 32 stations located in eight geographic areas on the North Slope, including Slope Mountain, May Creek, Arc Mountain, Rooftop Ridge, Big Bend of the Chandler River, Ninuluk Bluff on the Colville River, Killik Bend of the Colville River, and Horseshoe Bend of the Colville River. The thin sections were examined qualitatively to ascertain several petrographic properties, including grain size, detrital composition, cement and matrix content, the abundance of burrows and laminations, and porosity distribution. Sedimentary structures observed in the field were noted, as was the interpreted sedimentary facies association. The results are compiled in a spreadsheet along with information on geographic location, latitude, longitude, and measured petrophysical properties (porosity, permeability, and grain density) of the few samples where available. All files are available from the DGGS website: http://doi.org/10.14509/30746.

Tags: albian, analyses, awuna river, bedrock, bedrock geology, big bend, brookian, calcite, cement, cenomanian, chert, chlorite, clay, colville river, correlation, cretaceous, dggs, dolomite, energy, exploration, feldspar, fluvial, geologic, glauconite, hydrocarbon, kaklik naitka creek, kaolinite, killik bend, mayuasanik creek, mica, mineralogy, mudstone, nanushuk formation, nanushuk river, ninuluk bluff, ninuluk creek, nonmarine, north slope, oil and gas, oil and gas basin, oil development, oolamnagavik river, permeability, petrographic, petroleum, petrology, plagioclase, porosity, provenance, quartz, quartzite, replacement, reservoir, resources, rocks, sand, sandstone, sediment, sedimentary, sedimentology, shale, shelf, shoreface, siderite, silica, siltstone, slope, slope mountain, sorting, stratigraphy, trouble creek
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Valdez 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.Lidar intensity images depict intensity values of the lidar-laser returns.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, lidar, lidar intensity image, proposed natural gas pipeline, remote sensing, shaded relief, state of, topographic map, trans-alaska pipeline, valdez quadrangle
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery of Ship Creek Dam, December 5, 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 Ship Creek Dam and was collected on December 5, 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/10.14509/30282.

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
40Ar/39Ar data from the Talkeetna Mountains C-4 Quadrangle and adjoining areas, central Alaska

This report presents 40Ar/39Ar step-heating geochronology results for igneous and metamorphic rocks from the Alaska Division of Geological & Geophysical Surveys' (DGGS) Talkeetna Mountains C-4 Quadrangle and Adjoining Areas geologic mapping project. Hornblende-bearing gabbro returned a Late Triassic crystallization age consistent with regional results for Nikolai Greenstone-related magmatism. We determined Early Jurassic metamorphic ages for hornblende and sericite from two samples of upper greenschist to amphibolite grade metavolcanic rocks. Our results indicate that a granodiorite pluton intruding Wrangellia in the study area has a Middle Jurassic age consistent with the Talkeetna Arc, indicating that the Wrangellia and Peninsular terranes were joined at that time. Cretaceous plutons and porphyry intrusions in the map area can be divided into two types: reduced granitic to felsic porphyry intrusions with latest Cretaceous ages, and an earlier, oxidized type with early Late Cretaceous ages. This observation corresponds to similar patterns in magmatism in the western Alaska Range, and may indicate geological potential for similar style intrusive-related gold, copper, and molybdenum mineralization in the study area. Finally, we obtained Eocene ages for andesite and rhyolite; these ages constrain the timing of displacement on some of the faults in the map area. Analyses were performed by the University of Alaska Fairbanks (UAF) Geochronology Laboratory, and the results were reported by Jeff Benowitz and Paul Layer. Products included in this data release are a summary of sample collection methods, the laboratory report, analytical data tables and associated metadata, and the plots of the 40Ar/39Ar age spectra, Ca/K, and Cl/K ratios.

Tags: 40ar/39ar, age dates, analyses, analyses and sampling, analytical lab results, analytical results, ar-ar, bedrock, bedrock geology, cretaceous, early jurassic, eocene, geochronology, geology, lab methods, late triassic, middle jurassic, nikolai greenstone, plutonic rocks, plutons, sample location, statemap project, strategic and critical minerals assessment project, talkeetna arc, talkeetna mountains quadrangle, volcanic, volcanic arc, volcanic rocks, wrangellia terrane
Organization: State of Alaska
Geological map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska

Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This geologic map was produced by merging a bedrock geologic map and a surficial geologic map of the Eagle A-2 Quadrangle. This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1 Quadrangle are the closest surface expressions of Prudhoe Bay source and reservoir rocks. This study yields critical petroleum-related information from these surface exposures, and how they relate to the area subsurface stratigraphy.

Tags: arctic national wildlife refuge, aufeis, basins, biostratigraphy, brookian sequence, brooks range, c14, cambrian, canning formation, carbonates, cenozoic, clastics, coal, cretaceous, depositional analysis, devonian, diagenesis, echooka formation, ellesmerian sequence, endicott group, eolian, faulting, fluvial, folding, formations, franklinian sequence, geologic, geologic map, geomorphology, glacial, glacial geology, glacial processes, glaciation, glaciers, holocene, hue shale unit, icings, ivishak formation, jurassic, kavik shale, kayak shale, kekiktuk conglomerate, kemik sandstone, kingak shale, lisburne group, marine, marine transgressions, measured stratigraphic section, mesozoic, mississippian, modal analysis, moraines, north slope basin, ordovician, orogeny, paleobotany, paleoenvironment, paleontology, paleozoic, palynology, pebble shale unit, pennsylvanian, permian, petrography, petroleum, pleistocene, precambrian, prince creek formation, proterozoic, provenance, quaternary, resource management, sadlerochit group, sandstone, sedimentary, shale, shaviovik river, shublik formation, silt, silurian, structure, surficial, surficial geology, tectonics, tertiary, thaw lakes, trace fossils, triassic, turbidites, volcanic ash
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Chandalar 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 dataset represents all classified laser returns from the LiDAR survey and their associated geospatial coordinates.

Tags: aerial geology, alaska, chandalar quadrangle, digital elevation model, digital surface model (dsm), geologic hazards, geology, geomorphology, hazards, holocene, lidar, lidar las file format, point cloud data, remote sensing, slope instability, state of, trans-alaska pipeline
Organization: State of Alaska
Southern Dishna River electromagnetic and magnetic airborne geophysical survey data compilation

The Southern Dishna River survey is one of several geophysical surveys, collectively known as the Five Spot project (Southern Dishna River, Beaver Creek, and Fox Hills surveys), located in the Iditarod-Innoko and Aniak mining districts, which is about 575 km southwest from Fairbanks, Alaska. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system from September to November 2012. A total of 4546.9 line kilometers were collected covering 1614.9 square kilometers for the Southern Dishna River survey. 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/10.14509/29819.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, apparent resistivity data, apparent resistivity map, apparent resistivity survey, billy goat creek, black pass, california creek, caribou creek, conductivity survey, deadwood creek, dishna river, electromagnetic data, electromagnetic survey, exploration, first chance creek, first vertical derivative, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, glacier creek, gridded data, guggenheim creek, hickey creek, iditarod mining district, innoko mining district, line data, magnetic data, magnetic survey, magnetics, moose creek, porcupine creek, remote sensing, resistivity, resistivity survey, tolstoi creek, twin island creek, windy creek
Organization: State of Alaska
Progress report on the geology and mineral resources of the Nome mining district, Alaska

Public Data File 94-39, Progress report on the geology and mineral resources of the Nome mining district, Alaska, presents 1:63,360-scale reconnaissance bedrock and surficial geologic mapping of about 1,900 square kilometers (590 square miles) in the Nome mining district of western Alaska. The Nome mining district is an area of intensely metamorphosed schists. Four types of metallic mineral resources were identified in the study area: (1) gold-polymetallic- quartz-carbonate veins cutting pelitic and mafic schists and carbonates believed to have formed as a result of regional metamorphism; (2) stratiform, massive sulfide-barite deposits associated with felsic metavolcanic schist and metafelsite centers; (3) massive sulfide-iron deposits hosted in carbonate-dominated terranes and of uncertain origin; and (4) heavy mineral placer deposits that have accounted for almost all of the metallic mineral production in the study area. The dataset contains geologic, structural, stratigraphic, and geochronologic data organized according to the GeMS and AK GeMS mapping schemas. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/1665.

Tags: actinolite, alluvial, alluvium, amphibolite, anvil mountain, army peak, aurora mountain, banner peak, barite, bedrock, bedrock geology, belmont point, bonanza hill, cape nome, casadepaga schist, chemistry, cipw norms, city of nome, coastal, colluvium, cone mountain, conglomerate, copper, crater mountain, cripple river, dexter peak, diopside, dolomite, economic geology, engstrom mountain, environment, eolian, epidote, feldspar, felsic, flambeau river, floodplain, fluvial, garnet, gelifluction, geochemical surveys, geochemistry, geology, geomorphology, glacial, glaciation, gneiss, goethite, gold, granite, granodiorite, graphite, gravel, holocene, hornblende, igneous, iron, jurassic, king mountain, lacustrine, landslide, major oxides, marble, mesozoic, metabasite, metamorphic, metamorphic minerals, metamorphic rocks, metamorphism, mica, mineral exploration, mineral resources, minerals, mining, moonlight springs, moraines, mount brynteson, mount distin, muscovite, native hill, newton peak, nome, nome river, nome river glaciation, orthogneiss, osborn dome, outwash, paleozoic, paludal, paradise camp, peat, penny river, perkinsville, permafrost and periglacial, petrography, petrology, placer, plagioclase, pleistocene, precambrian, provenance, ptarmigan rock, pyrite, quartz, quartzite, rocks, salmon lake, salmon lake glaciation, sand, sandstone, schist, sediment hosted, sedimentary, sericite, silt, silver, sinuk, sinuk glaciation, sinuk river, snake river, solomon, solomon schist, stewart river, stewart river glaciation, sunset mine, surface, surficial, surficial geology, tailings, talus, terrace, till, tourmaline, trace metals, tremolite, twin lakes, twin mountain, volcanogenic massive sulfide, zircon
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Sagavanirktok 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.Lidar intensity images depict intensity values of the lidar-laser returns.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, lidar, lidar intensity image, proposed natural gas pipeline, remote sensing, sagavanirktok quadrangle, shaded relief, state of, topographic map, trans-alaska pipeline
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment B: Teller to Nome

Aerial photographs of the coastline from Teller to Nome were collected between August 26, 2015 - August 27, 2015. The photographs were processed using Structure-from-Motion (SfM) photogrammetric techniques. Global Positioning System (GPS) checkpoints were collected via a Global Navigation Satellite System (GNSS) survey conducted between August 15 and September 14, 2015. For the purposes of open access to elevation and orthoimagery datasets in coastal regions of Alaska, this collection is being released as a Raw Data File with an open end-user license. Orthoimages contain 4-band, 8-bit, unsigned raster data (red/green/blue/no data; file format-GeoTIFF; source-Fairbanks Fodar) with 20 cm GSD. No-data values are found in band 4 or shown as transparent in red/green/blue images. The file employs Lempel-Ziv-Welch (LZW) compression. Light exposures in the orthoimages are a result of daily weather conditions, which ranged from low cloud cover, rain, and full sun.

Tags: brevig mission, coastal, coastal and river, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, hazards, hillshade image, holocene, marine geology, methods, nome, orthoimagery, raster image, sinuk, surficial, teller
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Bettles 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, bettles quadrangle, digital surface model (dsm), 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
Reconnaissance geologic map of the Nome C-3 Quadrangle, Seward Peninsula, Alaska

Reconnaissance geologic map of the Nome C-3 Quadrangle, Seward Peninsula, Alaska, Open-File Report 72-322, provides (1:63,360-scale) geologic mapping of parts of the U.S. Geological Survey (USGS) Nome C-3 quadrangle. This map was published by the USGS and has been scanned, digitized, and attributed by DGGS staff. The dataset contains geologic, structural, stratigraphic, and geochronologic data organized according to the GeMS and AK GeMS mapping schemas. The geodatabase and ESRI fonts and style files are available from the DGGS website: https://dggs.alaska.gov/pubs/id/10961.

Tags: alluvial, alluvial deposits, alluvial fan, alluvium, bedrock, bedrock geologic map, bedrock geology, bering sea, boulder creek, camp creek, cape rodney, chert, chlorite, clay, coastal, colluvium, cretaceous, dry creek, epidote, fairview creek, fan, faults, gabbro, geologic, geologic map, geology, glacial, granite, granite creek, granodiorite, graphite, gravel, hornblende, igneous, independence creek, lamprophyre, limestone, marble, metamorphic, metamorphic rocks, metasedimentary rocks, mica, monzonite, moraines, nome mining district, norton sound, outwash, outwash fan, paleozoic, precambrian, quartz, quartz creek, quaternary, rocks, sand, schist, sedimentary, seward peninsula, silt, sinuk, sinuk river, slate, sledge island, stuart creek, surficial geology, terrace, tertiary, tundra, volcanic, west point, york slate
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Valdez 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, topographic map, trans-alaska pipeline, valdez quadrangle
Organization: State of Alaska