AndreaBozzo/ceres-open-data-index huggingface dataset:
U-Pb and Lu-Hf isotope, age, and trace element data from zircon separates from the Tanacross D-1, and parts of D-2, C-1, and C-2 quadrangles

This Alaska Division of Geological & Geophysical Surveys (DGGS) Raw Data File presents U-Pb geochronology, Lu-Hf isotopic compositions, and trace-element composition of zircons from six metaigneous and igneous rocks sampled during investigations by DGGS geologists in the northeastern Tanacross quadrangle. The purpose of the Lu-Hf and U-Pb isotopic study is to better understand the Devonian-to-Mississippian and Mesozoic-to-early Paleogene episodes of magmatic and tectonic evolution of the Yukon-Tanana Uplands and the significance of magmatism to the formation of metallic mineral deposits. Products included in this data release are: A summary of sample collection methods, the laboratory report, analytical data tables, and associated metadata. All files are available from the DGGS website: http://doi.org/10.14509/30198.

Tags: age dates, analyses, cretaceous, devonian, fortymile assemblage, geochronology, geologic, geology, hafnium, isotopes, lake george assemblage, late cretaceous, lutetium, mineral composition, mineral deposit, mineral resources, minerals, paleocene, proterozoic, sample location, tanacross, u-pb, zircon
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. The normalized digital surface models (nDSM) represent the above ground elevation of the highest laser return with all vegetation included.

Tags: alaska, alaska highway corridor, alaska pipeline, data normalized digital surface model (ndsm), gasline, geomorphology, lidar, proposed natural gas pipeline, raster image, remote sensing, state of, talkeetna quadrangle, trans-alaska pipeline
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 digital surface model represents percent canopy cover (between 0 and 1). Cover metric was computed in Fusion (McGaughey 2007), which assesses the percentage of total first returns within each cell that were returned from the canopy. For more specifics on Fusion Gridmetric outputs see the fusion manual (page 56).

Tags: alaska, alaska highway corridor, alaska pipeline, fairbanks quadrangle, gasline, geomorphology, lidar, lidar canopy cover, pipeline, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Talkeetna Mountains 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 normalized digital surface models (nDSM) represent the above ground elevation of the highest laser return with all vegetation included.

Tags: alaska, alaska highway corridor, alaska pipeline, data normalized digital surface model (ndsm), gasline, geomorphology, lidar, proposed natural gas pipeline, raster image, remote sensing, state of, talkeetna mountains quadrangle, trans-alaska pipeline
Organization: State of Alaska
Photogrammetry-derived digital surface model and orthoimagery of areas near the Dalton Highway, Yukon River Crossing, Alaska

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced a digital surface model (DSM) and an orthorectified aerial image (orthoimagery) over Yukon River Crossing in support of landslide hazard mapping. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on June 30, 2016, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the DSM and orthoimagery. For the purpose of enabling open access to geospatial datasets in Alaska, this collection is being released as a Raw Data File with an open end-user license. All files can be downloaded free of charge from the DGGS website (http://doi.org/10.14509/30183). The orthoimagery is a four-band, 16-bit unsigned GeoTIFF file. The orthoimagery has a GSD of 0.24 m per pixel, and the "No Data" value is set to 256. Variable sky conditions during the photogrammetry survey resulted in some illumination anomalies in the southern part of the study area.

Tags: aerial, aerial photography, big salt river, coastal and river, digital surface model (dsm), earthquake related slope failure, engineering, engineering geology, environmental, fracturing, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, hazards, landslide, melozitna mining district, methods, orthoimagery, pipeline, rampart mining district, raster image, ray river, rockfall, sightas island, slides, slope, slope instability, smoothface mountain, structure from motion, surface, surface water, surficial, surficial geology, tolovana mining district, topography, trans-alaska pipeline, vegetation, water, woodcamp creek, yukon river
Organization: State of Alaska
East Richardson electromagnetic and magnetic airborne geophysical survey data compilation

The East Richardson electromagnetic and magnetic airborne geophysical survey is located in interior Alaska in the Richardson mining district, about 80 kilometers southeast of Fairbanks. The survey is adjacent to the Richardson geophysical survey. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system from September to November 2005. A total of 1758.4 line kilometers were collected covering 629.0 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 survey was conducted by Fugro Airborne Surveys Corp. and Stevens Exploration Management Corp. and administered by the Alaska Geological & Geophysical Surveys (DGGS). The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/29754.

Organization: State of Alaska
Geologic map of the Circle mining district, Alaska

This report provides detailed (1:63,360-scale) mapping of portions of U.S. Geological Survey Circle B-2 (1955), B-3 (1955), B-4 (1952), C-2 (1955), C-3 (1955), and C-4 (1952) quadrangles. The area is part of the Circle mining district and adjacent to the Fairbanks mining district. This report includes detailed geologic, structural, stratigraphic, and geochronologic data. Based on the resulting geologic maps, field investigations, and laboratory materials analyses, the project has also generated derivative maps of geologic construction materials and geologic hazards.

Tags: aereal, aerial photography, aeromagnetic survey, age dates, alaska, alluvial deposits, alluvium, amphibolite, ar-ar, bedrock, bibliography, birch creek, c14, carbonates, circle hot springs, circle mining district, circle quadrangle, clastics, coal, colluvial deposits, colluvium, conductivity survey, conodonts, cretaceous, crooked creek, electromagnetic survey, fan, faulting, faults, fluvial, folding, fossils, geologic, geomorphology, glacial, glacial deposits, glacial drift, granite, holocene, hornblende, hornfels, igneous rocks, k-ar, magnetite, major oxides, mammoth creek, mastodon dome, metamorphic grade, metamorphic minerals, metamorphism, mineralogy, modal analysis, paleozoic, petrography, pleistocene, plutonic, plutonic hosted, porphyry, precious metals, quartz, quaternary, regional, regional metamorphism, sample location, sandstone, schist, sedimentary, state of, structure, surficial, tectonics, terranes, tertiary, tintina fault, yukon-tanana terrane, yukon-tanana upland
Organization: State of Alaska
Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the Selawik Hills, northwestern Alaska

This report and digital data release presents 326 new geochemical analyses on historic U.S. Bureau of Mines (USBM) samples, including 106 rock, 164 stream sediment, and 56 heavy mineral concentrate (pan concentrate) samples. These samples were originally collected by the USBM as part of a mineral-reconnaissance project in the Selawik Hills area of northwestern Alaska. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s. The text and analytical data and tables associated with this report are being released in digital format as PDF files and .csv files. We provide analytical data, detection limits and, when available, the method documentation provided to us by the lab. We also provide the sample location in geographic coordinates, the sample material cited by the originating literature, a reference to the originating report, and the type of sample material that was obtained from the archive and sent to the lab.

Tags: analyses and sampling, base metals, critical minerals, economic geology, economic study, exploration, geochemical surveys, geochemistry, geology, heavy metals, mineral assessment, mineral deposit, mineral development, mineral localities, mineral prospect, mineral resources, minerals, non-metals, platinum group elements, precious metals, rare earth elements, ree, resource assessment, resource information, resources, strategic and critical minerals assessment project, strategic minerals, trace elements, trace geochemical, trace metals
Organization: State of Alaska
Airborne magnetic geophysical survey of the Tanacross region, Alaska

Airborne geophysical data for the Tanacross area were acquired and processed by Goldak Airborne Surveys under contract with the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS). Project funded by the US Geological Survey, Mineral Resources Program. This high sensitivity aeromagnetic survey was carried out by Goldak Airborne Surveys (Goldak) on behalf of the Alaska Department of Geological and Geophysical Surveys (DGGS) between June 17th and July 31st, 2015. Aircraft equipment operated included three cesium vapor magnetometers, a GPS/GLONASS real-time and post-corrected differential positioning system, a flight path recovery camera, a digital video titling and recording system, as well as radar and barometric altimeters. All data were recorded digitally in GEDAS binary file format. Reference ground equipment included three GEM Systems GSM-19W Overhauser magnetometers and a Novatel 12 channel GPS/GLONASS base station which was set up at the base of operations for differential post-flight corrections. Forty-eight flights (including test and calibration sorties) were required to complete the survey block. A total of 26,533 line kilometers of high resolution magnetic data were collected, processed and plotted. The traverse lines were flown at a spacing of 500 meters with control lines flown at a separation of 5000 meters. Nominal terrain clearance was specified at 100 meters above ground. Tok, Alaska was used as the base of operations throughout the entire survey.

Tags: big delta quadrangle, birch creek schist, bush prospect, chicken metamorphic complex, chicken pluton, dennis ladue prospect, dennison fork, diamond mountain, eagle quadrangle, fiftymile batholith, fish prospect, fortymile mining district, fortymile river, fortymile river assemblage, friden prospect, gardiner creek batholith, geophysical survey, geophysics, geophysics search tag, goodpaster mining district, hajdukovich molybdenum? prospect, j-26 prospect, july 26 prospect, june 26 prospect, kechumstuck fault, kechumstuck mountain, ketchumstuk prospect, klondike schist, ladue river, ladue river complex, lake george assemblage, little enchilada prospect, little whiteman creek prospect, lwm occurrence, magnetic data, magnetic survey, magnetics, mcarthur creek, middle fork fortymile river, mitchell prospect, mosquito flats, mosquito fork, mosquito prospect, mosquito terrane, mount fairplay, mount harper, mount hayes quadrangle, move prospect, mt. fairplay prospect, nabesna quadrangle, nasina series, north mosquito flats prospect, north peternie prospect, pelly gneiss, peternie prospect, prindle volcano, rainy mountain lode prospect, raven prospect, section 21 prospect, shady ridge prospect, sheba mountain, silver lining prospect, sixtymile butte, sixtymile butte prospect, sixtymile fault, south fork of the fortymile river, tanacross quadrangle, taurus prospect, taylor highway, taylor mountain, taylor mountain batholith, vabm west prospect, vw prospect, yukon-tanana terrane
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Healy 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 (mean_DSM) represents mean above-ground height of vegetation returns.

Tags: alaska, alaska highway corridor, alaska pipeline, digital surface model (dsm), gasline, geomorphology, healy quadrangle, lidar, mean vegetation elevation (dsm), proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline, vegetation metric
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for 26 coastal communities of western Alaska

The State of Alaska Division of Geological & Geophysical Surveys acquired photogrammetric digital surface models (DSMs) and co-registered orthorectified aerial images (orthoimages) for the west coast of Alaska in support of coastal vulnerability mapping efforts. This report is a summary of the data collected over 26 developed areas along approximately 3,500 km of coastline in the Bering Sea, Norton Sound, and Yukon-Kuskokwim Delta regions (fig. 1). Aerial photographs were collected between July 31 and September 6, 2015, and processed using Structure from- Motion (SfM) photogrammetry techniques. Ground control points (GCPs) and checkpoints were collected in support of these data products during 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. The data available for each of the 26 communities consist of the following: (1) Orthoimage raster, (2) Digital Surface Model (DSM) raster, (3) Hillshade raster produced from DSM, and (4) an Orthoimage Hillshade combination raster.

Tags: alakanuk, alaska, brevig mission, chefornak, chevak, coastal, coastal and river, elim, emmonak, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, golovin, hillshade image, hooper bay, kipnuk, kongiganak, kotlik, koyuk, kwigillingok, methods, newtok, nightmute, nome, nunam iqua, orthoimagery, raster image, saint michael, scammon bay, shaktoolik, state of, stebbins, teller, toksook bay, tununak, unalakleet, wales
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Tyonek 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, tyonek quadrangle
Organization: State of Alaska
Lidar data for the community of Golovin, Alaska

This publication presents lidar data collected over the community of Golovin, on the southern coast of the Seward Peninsula in western Alaska (fig. 1). The original data were collected on November 5, 2013, by Quantum Spatial. The complete, classified lidar dataset was purchased by the State of Alaska Division of Geological & Geophysical Surveys in 2014 in support of coastal vulnerability mapping efforts. For the purposes of open access to lidar datasets in coastal regions of Alaska, this collection is being released as a Raw Data File with an open end-user license. The horizontal datum for this dataset is NAD83 (CORS96), the vertical datum is NAVD88, Geoid 09, and it is projected in UTM Zone 3 North. Units are in Meters. Data have been classified to Ground (class 2) and Default (class 1). Quantum Spatial collected the Golovin LiDAR data on 11/05/2013.

Tags: coastal, coastal and river, digital surface model (dsm), geomorphology, golovin, hillshade image, holocene, las index shapefile, lidar, lidar las file format, point cloud data, raster image, remote sensing, seward peninsula, shaded relief, solomon quadrangle, surface, topography
Organization: State of Alaska
Airborne electromagnetic and magnetic survey, Yukon Crossing to Fox profile, interior Alaska

Alaska Division of Geological & Geophysical Surveys, in conjunction with the University of Alaska Fairbanks, Institute of Northern Engineering, Water and Environmental Research Center, managed the collection of a single 128-kilometer line of frequency domain electromagnetic and magnetic data from Yukon Crossing to Fox, Interior Alaska. The data were collected to facilitate understanding of processes within a hydrology-permafrost-methane system in an area of discontinuous permafrost and thaw lakes in the sub-arctic region. The survey line covers selected areas pertinent to the scope of research. The survey line was flown on March 1st, 2016. Data were collected by CGG using the RESOLVE airborne geophysical survey system and measured 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/10.14509/29684.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, aggie creek, airborne geophysical survey, analytic signal, apparent resistivity contours, apparent resistivity data, apparent resistivity map, apparent resistivity survey, cascaden ridge, chatanika river, conductivity survey, differential depth, differential resistivity, eagle creek, electromagnetic anomalies, electromagnetic data, electromagnetic data inversion, electromagnetic survey, elliot highway, em1dfm inversion, em1dfm resistivity, engineering geology, exploration, fairbanks quadrangle, first vertical derivative, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, gridded data, hem survey, hfem survey, inversion, isom creek, line data, livengood quadrangle, magnetic contours, magnetic data, magnetic survey, magnetics, modeling, our creek, radiometric survey, radiometrics, remote sensing, resistivity, resistivity model, resistivity survey, resolve em system, richardson creek, slate creek, stacked multi-channel profiles, treasure creek, troublesome creek
Organization: State of Alaska
Line, grid, and vector data, plot files, and descriptive project report for the airborne geophysical survey of part of the western Fortymile mining district, east-central Alaska

This digital publication, GPR 2008-1, contains geophysical data and a digital elevation model that were produced from airborne geophysical surveys conducted in 2007 for part of the western Fortymile mining district, east-central Alaska. Aeromagnetic and electromagnetic data were acquired for 250 sq miles during the helicopter-based survey. Data provided in GPR 2008-1 include processed (1) linedata ASCII database, (2) gridded files of magnetic data, a calculated vertical magnetic gradient (first vertical derivative), apparent resistivity data, and a digital elevation model, (3) vector files of data contours and flight lines, and (4) the Contractor's descriptive project report. Data are described in more detail in the "GPR2008-1Readme.pdf" and "linedata/GPR2008-1-Linedata.txt" files included on the DVD.

Tags: aeromagnetic data, aeromagnetic map, airborne geophysical survey, alaska, apparent resistivity contours, apparent resistivity data, apparent resistivity map, dighem v em system, digital elevation model, eagle quadrangle, electromagnetic data, first vertical derivative, fortymile mining district, geophysics, hem survey, magnetic contours, state of, tanacross quadrangle
Organization: State of Alaska