AndreaBozzo/ceres-open-data-index huggingface dataset:
Chert geochemistry discriminant analysis and K-meas cluster analysis: Rampart Project area, Tanana B-1 Quadrangle, east-central Alaska

A pilot study using discriminant analysis on major oxide and minor element data from 67 chert samples in the Rampart area, southeastern Tanana and southwest Livengood Quadrangles, western Yukon-Tanana Upland, Alaska, generally indicates a unique geochemical signature for the cherts of a given unit.Chert samples from five known type locales were used as standards of comparison: 1)Livengood Dome Chert (Ordovician), 2)Amy Creek unit (Proterozoic to early Paleozoic), 3)Rampart Group (Mississippian to Triassic), 4)Troublesome Creek unit (Devonian), and 5)Permian-Triassic clastic unit (associated with the Triassic-dated gabbro). Samples from the above units were compared to chert from Tanana B-1 area-units of unknown or uncertain affinity.We have determined that discriminant analysis of chert geochemistry can assign chert profiles to specific units with only minor exceptions, and is useful in geologic mapping of the Tanana B-1 Quadrangle (Reifenstuhl and others, 1997).

Tags: amy dolomite, barium, bedrock geologic map, chemistry, chert, devonian, geochemical data, geochemical surveys, geochemistry, livengood dome chert, livengood quadrangle, major oxides, mesozoic, metasedimentary rocks, methods, paleozoic, permian, phosphorus, potassium, rampart group, rampart mining district, rampart-manley mining district, rare earth elements, rubidium, ruby terrane, silica, strontium, tanana quadrangle, titanium, trace elements, triassic, vanadium, wickersham unit, yttrium, yukon-tanana terrane, zirconium
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment M: Kongiganak to Bethel

Aerial photographs of the coastline from Kongiganak to Bethel were collected on August 12, 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. This file is a single-band, 32-bit float DSM (digital surface model) which represents surface elevations of buildings, vegetation, and uncovered ground surfaces in meters with 20 cm GSD. The No Data value is set to -32767. The file employs LZW compression.

Tags: bethel, coastal, coastal and river, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, hazards, kongiganak, marine geology, methods, raster image, surficial
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. 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, sagavanirktok quadrangle, shaded relief, state of, topographic map, trans-alaska pipeline
Organization: State of Alaska
Shoreline change at Alaska coastal communities, Kotzebue, Alaska

The Division of Geological & Geophysical Surveys has analyzed long-term shoreline change at 48 Alaska communities. Shoreline datasets were compiled from previously published U.S. Geological Survey assessments and created from historical and recent aerial images by the Alaska Division of Geological & Geophysical Surveys. Shorelines were analyzed to calculate shoreline change rates every 25 meters along coastlines and tidally influenced riverbanks using the Digital Shoreline Analysis System (DSAS; Himmelstoss and others, 2018). The geodatabase for each community includes shoreline positions, the alongshore baseline used to cast transects, and transects that include shoreline change rates and statistics. All files can be downloaded free of charge from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30552).

Tags: aerial, aerial photography, alaska, coastal, dggs, emergency preparedness, engineering, environmental, erosion, flood, floodplain, geology, hazards, inundation, kotzebue, marine geology, outreach, sea level changes, shelf, shoreface, storm surge, surface, tides, topography, water
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Wiseman 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, 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, wiseman quadrangle
Organization: State of Alaska
Photogrammetry-derived orthoimagery and elevation data for Pilot Point, Alaska, collected June 1-3, 2021

Photogrammetry-derived orthoimagery and elevation data for Pilot Point, Alaska, collected June 1-3, 2021, Raw Data File 2022-13, uses low-altitude aerial images, collected from an unmanned aerial vehicle (UAV) on June 1 and June 3, 2021, and Structure-from-Motion (SfM) photogrammetry to produce a digital surface model (DSM) and orthoimagery for the community of Pilot Point, Alaska. The orthoimage and elevation data are for assessing coastal hazards and changes. We used Trimble Business Center to process the Global Navigation Satellite System (GNSS) data used for positional control and NOAA VDatum to adjust elevation data. We used Agisoft Metashape to process photogrammetry data. These products are released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30905).

Tags: aerial, aerial geology, aerial photography, coastal, coastal and river, coastal and river hazards, coastal erosion, coastal plain, dggs, digital surface model (dsm), elevation, emergency preparedness, engineering, environmental, erosion, flood, floodplain, geologic, geologic hazards, geology, geomorphology, geophysics, geotechnical, hazards, marine geology, photogrammetry, pilot point, raster image, remote sensing, sea level changes, shoreface, surface, surface water, surficial, surficial geology, water
Organization: State of Alaska
Petrographic observations of rocks collected in the Bonnifield mining district, Fairbanks A-1, Fairbanks A-2, Healy D-1, and Healy D-2 quadrangles, Alaska

Mineral Resources Section personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a geologic field mapping survey in the eastern part of the Bonnifield mining district in the Fairbanks A-1 and A-2 and the Healy D-1 and D-2 quadrangles. The map area contains several significant polymetallic sulfide prospects and transects three metamorphic assemblages, which include the Healy Schist, Keevy Peak Formation, and the Totatlanika Schist. The fieldwork (June 16 through July 18, 2008) augments publically available information critical to building an understanding of Alaska's geology and is part of an integrated program of airborne geophysical surveys followed by geologic mapping. This raw data release provides petrographic thin section observations of 264 samples from the East Bonnifield Project rock collection. Project staff examined thin sections to better distinguish rock units, assist with evaluating the structural and stratigraphic relationships among the various lithologies, and to determine suitability for lithogeochemical and geochronological analysis. Observations in the data tables include lithologic classification, texture, mineral crystal structure, and mineral components. Users can access the complete report and digital data from the DGGS website: http://doi.org/10.14509/30171.

Tags: bedrock, bedrock geology, bonnifield mining district, chute creek, coal creek, dry creek, exploration, geologic, geology, glacier creek, glory creek, healy schist, igneous, igneous rocks, kansas creek, keevy peak formation, metamorphic, metamorphic minerals, metamorphic rocks, metasedimentary rocks, metavolcanic rocks, mineral composition, mineral resources, mineralogy, minerals, mystic creek, newman creek, petrogenesis, petrographic, petrography, petrology, red mountain, red mountain creek, rocks, rogers creek, sheep creek, slate creek, slide creek, smallwood creek, snow mountain gulch, threemile creek, totatlanika schist, waugaman mountain, wood river
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Big Delta 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, big delta quadrangle, digital surface model (dsm), gasline, geomorphology, lidar, mean vegetation elevation (dsm), proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline, vegetation metric
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Mount Hayes 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 highest-hit digital surface models (DSM) represent the earth's surface with all vegetation and human-made structures included.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, highest hit digital surface model (dsm), lidar, mount hayes quadrangle, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
Circle electromagnetic and magnetic airborne geophysical survey data compilation

This geophysical survey is located in north-central Alaska in the Circle mining district, about 120 kilometers northeast of Fairbanks, Alaska. Frequency domain electromagnetic and magnetic data were collected with the DIGHEM system from August to September 1993. A total of 2516.7 line kilometers were collected covering 921.5 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/10.14509/30167.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, apparent resistivity data, apparent resistivity map, apparent resistivity survey, bates creek, bedrock creek, birch creek, bonanza creek, bottom dollar creek, boulder creek, butte creek, circle hot springs, conductivity survey, cripple creek, crooked creek, deadwood, deadwood creek, dome creek, eagle creek, eagle summit, easley creek, electromagnetic data, electromagnetic survey, exploration, first vertical derivative, fish creek, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, gold dust creek, graveyard creek, greenhorn creek, gridded data, half dollar creek, harrison creek, harrison fork, holdem creek, hot springs creek, independence creek, ketchem creek, ketchem dome, line data, magnetic data, magnetic survey, magnetics, mammoth creek, mary louise fork, mastodon, mastodon creek, mastodon dome, mastodon fork, mastodon fork eagle creek, miller creek, miller fork, miller fork eagle creek, miller house, north fork harrison creek, pinnell trail, porcupine creek, porcupine dome, portage creek, ptarmigan creek, remote sensing, resistivity, resistivity survey, sawpit creek, slate creek, south fork harrison creek, squaw creek, switch creek, traverse creek, two-bit creek, yankee creek
Organization: State of Alaska
Southern NPRA electromagnetic and magnetic airborne geophysical survey data compilation

The Southern NPRA electromagnetic and magnetic airborne geophysical survey is located in northwest Alaska in the southern National Petroleum Reserve-Alaska, about 320 kilometers south of City of Utqiagvik. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system from July to August 2005. A total of 11,115 line kilometers were collected covering 3,947.9 square kilometers. Line spacing was 400 meters (m) and 200 m over the Drenchwater area. Data were collected with an average ground clearance of 35 m 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/10.14509/30441.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, apparent resistivity data, apparent resistivity map, apparent resistivity survey, blankenship creek, bogie creek, bupto creek, bushy creek, conductivity survey, crassico creek, cula creek, cutaway creek, drenchwater creek, ekakevik creek, ekakevik mountain, electromagnetic data, electromagnetic survey, etivluk river, exploration, fay creek, first vertical derivative, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, gridded data, hardway creek, jubilee creek, kiligwa river, kuna river, kutchaurak creek, lake betty, line data, lisburne ridge, lost temper creek, magnetic data, magnetic survey, magnetics, memorial creek, monument ridge, mount bupto, nigu hills, nigu river, nuka river, puvakrat mountain, query creek, rampart creek, recon creek, remote sensing, resistivity, resistivity survey, rhumba creek, rolling pin creek, safari creek, singayoak creek, sorepaw creek, story creek, strident creek, swayback creek, swayback lakes, taffy creek, tukuto creek, tukuto lake, twistem creek, wager creek
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment C: Nome to Elim

Aerial photographs of the coastline from Nome to Elim were collected on August 23, 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: bear creek, bonanza river, cape darby, cape nome, coastal, coastal and river, coastal erosion, daniels creek, dry creek, elim, engineering, engineering geology, environmental, fish river, flambeau river, geologic, geologic hazards, geological process, geomorphology, golovin, hazards, hillshade image, iron creek, kachauik river, kwiniuk river, methods, moses point fishing village, mudyutok river, nome, nome river, orthoimagery, port safety, portage creek, raster image, rock creek, snake river, solomon, solomon river, surface, surficial, surficial geology, white mountain, yuonglik river
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 dataset represents all classified laser returns from the LiDAR survey and their associated geospatial coordinates.

Tags: aerial geology, alaska, bettles 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
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment E: Stebbins to Kotlik

Aerial photographs of the coastline from Stebbins to Kotlik were collected on August 31, 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: coastal, coastal and river, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, hazards, kotlik, marine geology, methods, raster image, stebbins, surficial
Organization: State of Alaska
Data tables related to geology and gold mineralization in the Richardson district, east-central Alaska

This report describes the results of geologic mapping and sample analysis from the Richardson district, east-central Alaska.

Tags: age dates, ar-ar, big delta quadrangle, cipw norms, fluid inclusion, geobarometry, geochemical data, geochronology, geothermometry, major oxides, microprobe analysis, modal analysis, richardson mining district, trace elements
Organization: State of Alaska
Geochemical reanalysis of historical U.S. Geological Survey sediment samples from the Haines area, Juneau and Skagway quadrangles, southeast Alaska

The State of Alaska's Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska's statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For the geochemical part of the SCM Assessment, thousands of historical geochemical samples from DGGS, U.S. Geological Survey (USGS), and U.S. Bureau of Mines archives are being reanalyzed by DGGS using modern, quantitative, geochemical-analytical methods. The objective is to update the statewide geochemical database to more clearly identify areas in Alaska with SCM potential. For this report, DGGS funded reanalysis of 1,682 historical USGS sediment samples from the statewide Alaska Geochemical Database Version 2.0 (AGDB2; Granitto and others, 2013). Samples were chosen from an area covering Haines area, Juneau and Skagway quadrangles, southeast Alaska. USGS was responsible for sample retrieval from the Denver warehouse through the final quality assurance/quality control (QA/QC) of the geochemical analyses obtained through the USGS contract lab. The new geochemical data are published in this report as a coauthored DGGS report, and will be incorporated into the statewide geochemical databases of both agencies.

Tags: alaska, analyses, analyses and sampling, anchorage quadrangle, chemistry, critical minerals, economic geology, economic study, geochemical data, geochemical surveys, geochemistry, geology, juneau quadrangle, 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, sample location, sediment, skagway quadrangle, state of, strategic and critical minerals assessment project, strategic minerals, stream sediments, trace elements, trace geochemical, trace metals
Organization: State of Alaska