AndreaBozzo/ceres-open-data-index huggingface dataset:
Bedrock-geologic map, Alaska Highway corridor, Dot Lake to Tetlin Junction, Alaska

Preliminary Interpretive Report 2019-2, Bedrock-geologic map, Alaska Highway corridor, Dot Lake to Tetlin Junction, Alaska, shows the distribution of bedrock units exposed at or near the surface in the corridor along the Alaska Highway in parts of the Tanacross A-4, B-4, B-5, B-6, and C-6 quadrangles. It is the central of three bedrock-geologic maps along the Alaska Highway corridor. It is part of a multi-year project conducted by the Alaska Division of Geological & Geophysical Surveys (DGGS) between 2006 and 2013. The project focused on investigating and reporting the geology and geologic hazards of the corridor. Bedrock units were mapped and structural elements were measured in the field; where bedrock units are covered by surficial units and vegetation, units were interpreted using airborne-magnetic and electromagnetic surveys published by DGGS in 2006. Rock names were assigned based on field and petrographic observations, modal-mineral percentages, and interpretations of geochemical data. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/30037.

Tags: actinolite, allanite, amphibolite, andalusite, apatite, arenite, bear creek, bedrock, billy creek, calcite, calcium, cathedral bluffs, cathedral rapids, chalcopyrite, chief creek, chisana mountain, chlorite, contact, cretaceous, devonian, dggs, diopside, epidote, exploration, faults, feldspar, felsic, fish creek, fish lake, folding, fortymile mining district, four mile lake, fracture, garnet, gems, gems ncgmp09, geologic, geology, glaman lake, gneiss, goodpaster mining district, granite, granodiorite, graphite, greenschist, hematite, hornblende, hornfels, igneous, interpretation, jan lake, jarvis belt, kyanite, ladue river, lake george assemblage, limestone, little fish creek, magnetite, manganese, mansfield creek, marble, metamorphic, metamorphism, mica, mineralogy, minerals, mining, mississippian, moon lake, muscovite, orthogneiss, petrographic, plagioclase, plutonic, plutons, porcupine creek, porphyry, pyrite, quartz, resources, rhyodacite, rhyolite, robertson river, rocks, round lake, schist, sedimentary, sericite, shear, sheep creek, silica, sillimanite, skarn, staurolite, talc, tanacross, tanana river, tertiary, tetlin junction, tok, tok mining district, tok river, tourmaline, tower bluffs, ultramafic, volcanic rocks, west fork ladue river, wollastonite, yerrick creek, zircon
Organization: State of Alaska
Bedrock geologic map of the Salcha River-Pogo area, Big Delta Quadrangle, Alaska

Report of Investigations 2004-1b, Bedrock geologic map of the Salcha River-Pogo area, Big Delta Quadrangle, Alaska covers an approximately 435-square-mile area in the central Big Delta Quadrangle, Alaska. The bedrock geologic map was produced from fieldwork conducted during the months of June through August, 2000-2002, by mineral-resource personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) and the University of Alaska Fairbanks. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/3209.

Tags: 40ar/39ar, amphibolite, basalt, batholith, bear creek, bedrock, bedrock geologic map, bedrock geology, big granite creek, bonanza creek, camp creek, conglomerate, cretaceous, devonian, dggs, diorite, dolomite, economic geology, felsic, garnet, gems, gems ncgmp09, geochronology, geologic map, geology, glacier creek, gneiss, goodpaster river, goose creek, granite, granodiorite, graywacke, greenschist, greenstone, hornblende, igneous, indian creek, maiden creek, mascot creek, mesozoic, metamorphic, migmatite, mississippian, north fork salcha river, orthogneiss, paleozoic, pasco creek, pegmatite, pennsylvanian, permian, plutonic, plutons, quartz, quartzite, rocks, salcha river, schist, sedimentary, serpentinite, sevenmile creek, shaw creek, sonora creek, south fork salcha river, statemap project, tertiary, tourmaline, u-pb, ultramafic, volcanic
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. 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, lidar, mean vegetation elevation (dsm), proposed natural gas pipeline, raster image, remote sensing, sagavanirktok quadrangle, state of, trans-alaska pipeline, vegetation metric
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Gulkana 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: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, gulkana quadrangle, lidar, lidar las file format, point cloud data, proposed natural gas pipeline, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
Coastal hazard field investigations in response to the November 2011 Bering Sea storm, Norton Sound, Alaska

On November 8, 2011, an extra-tropical cyclone with a low pressure of 945 millibars developed over the Bering Sea and moved northeast across the western coast of Alaska. This large storm brought high winds (gusts of up to 85 mph) to the entire region and a storm surge of approximately 3 meters to parts of Norton Sound. The storm caused extensive flooding in the lower portion of Golovin on the afternoon of November 9, 2011. A team of Alaska Division of Geological & Geophysical Surveys (DGGS) scientists visited Golovin on November 15, 2011, to document peak water levels, runup elevations, and inundation extents caused by this event. These data were combined with photographs taken by local residents during the event and elevation data from the 2004 DCCED Community Map to generate inundation limit lines.

Tags: bering straits crsa coastal district, coastal, coastal erosion, flood, geologic hazards, holocene, ice push, methods, nome, nome quadrangle, norton bay quadrangle, norton sound, shoreface, solomon quadrangle, storm surge, tides, unalakleet quadrangle
Organization: State of Alaska
Tectonic controls on marine terrace origin and character in the Lituya Bay area, eastern Gulf of Alaska

Tectonic controls on marine terrace origin and character in the Lituya Bay area, eastern Gulf of Alaska, Report of Investigation 2022-4, presents radiocarbon data collected from deformed terraces along 65 km of the coast between Fairweather Glacier and Icy Point in the Lituya Bay area of the eastern Gulf of Alaska. From Fairweather Glacier to Lituya Bay one prominent terrace flanks the coastal mountain front, and isolated remnants of a lower, younger terrace occur landward of a wide prograded coastal plain. From Lituya Bay to Crillon River a sequence of five well-developed terraces bevel the coastal foothills. From Finger Glacier to Icy Point four terraces and the possible remnants of a fifth occur. The terraces form an arch with an axis of maximum uplift near La Perouse Glacier. The deformation is progressively greater in the older terraces and shoreline angle relief on the highest terrace is 100 m or more. The terraces are of Pleistocene and Holocene age. The oldest terrace studied is not well dated but the next oldest may have formed during the post-Wisconsin sea level rise. The three Holocene terraces probably formed about 3,500 (3,990-2,960 cal yr BP), 1,000, and 500 years ago. Ongoing uplift and arching of the coastal zone may mark renewal of mid-Pleistocene folding, but Holocene uplift has taken place as discrete events that were probably accompanied by earthquakes. At least five uplift events have taken place between Lituya Bay and Icy Point in the past 3,000 to 4,000 years, which imply an average recurrence interval of ~500 years. Because recurrence of events that uplifted the terraces is distinctly longer than the average earthquake recurrence interval for the nearby Fairweather fault, coastal uplift may occur independently. The Finger Glacier fault displaces the Holocene terraces and may be a developing link between the onshore and offshore segments of the Fairweather fault. Sample descriptions, locations, and types are included in the analytical data table. The data are available from the DGGS website: http://doi.org/10.14509/30903.

Tags: cape yakataga, cenotaph volcanics, coastal, coastal and river, coastal plain, debris flow, debris flow deposit, deepwater depositional system, dggs, eagle creek, earthquake, earthquake related slope failure, fairweather glacier, fault displacement, faulting, faults, finger glacier, gulf of alaska, holocene, lituya bay, marine, marine geology, miocene, pleistocene, portage creek, tectonics, terrace, tertiary, topsy formation, tsunami, uplift, yakataga formation
Organization: State of Alaska
Tsunami inundation maps of Seward and northern Resurrection Bay, Alaska

The purpose of this study is to evaluate tsunami hazard for the community of Seward and northern Resurrection Bay area, Alaska. This report will provide guidance to local emergency managers in tsunami hazard assessment. We used a numerical modeling method to estimate the extent of inundation by tsunami waves generated from earthquake and landslide sources. Our tsunami scenarios included a repeat of the tsunami of the 1964 Great Alaska Earthquake, as well as tsunami waves generated by two hypothetical Yakataga Gap earthquakes in northeastern Gulf of Alaska, hypothetical earthquakes in Prince William Sound and Kodiak asperities of the 1964 rupture, and local underwater landslides in Resurrection Bay. Results of numerical modeling combined with historical observations in the region are intended to help local emergency officials with evacuation planning and public education for reducing future tsunami risk.

Tags: coastal and river, earthquake, earthquake related slope failure, emergency preparedness, engineering, engineering geology, fault displacement, faulting, faults, flood, geologic hazards, geology, inundation, kenai peninsula, kenai peninsula borough coastal district, landslide, modeling, resurrection bay, seismic hazards, seward, slides, slope, slope instability, southcentral alaska, surface, tides, tsunami
Organization: State of Alaska
IDITAROD SURVEY AREA: Magnetic and Electromagnetic Line, Grid, and Vector Data and Maps, Innoko, Iditarod, and Ophir mining districts, Iditarod and Ophir quadrangles, western Alaska (DIGHEM [V] SURVEY)

This digital publication, GPR 2011-2, contains data produced from airborne geophysical surveys conducted in 2010 for the Iditarod survey area in the Innoko, Iditarod, and Ophir mining districts, Iditarod and Ophir quadrangles, western Alaska. Aeromagnetic and electromagnetic (EM) data were acquired by helicopter for about 852 sq miles. Fugro Airborne Survey's frequency-domain DIGHEM V system was used for the EM data. GPR 2011-2 includes (1) raw and processed linedata; (2) gridded, Google Earth, and Geotiff formats of the calculated linedata; (3) maps of the data; and (4) vector files of data contours and flight lines.

Tags: aeromagnetic data, aeromagnetic map, airborne geophysical survey, alaska, apparent resistivity data, apparent resistivity map, dighem v em system, digital elevation model, electromagnetic data, first vertical derivative, geophysics, hem survey, iditarod mining district, iditarod quadrangle, innoko mining district, mcgrath mining district, ophir quadrangle, state of
Organization: State of Alaska
40Ar/39Ar data from the Richardson mining district, Big Delta Quadrangle, Alaska

During the 2017 and 2018 field seasons, geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted geologic mapping and sampling in the Richardson mining district southeast of Fairbanks, including parts of the Big Delta B-4, B-5, B-6, and C-6 quadrangles. The project area has produced approximately 122,000 ounces of gold, mostly from placer mines, and it includes the Uncle Sam, Montecristo, Richardson, Tower, and Hilltop lode gold exploration properties. The goal of DGGS's work in this area is to conduct a mineral-resource assessment and to build an improved understanding of the area's geology and controls on gold mineralization to facilitate industry exploration targeting. The four 40Ar/39Ar ages reported here are all from samples at or near mid-Cretaceous intrusion-related gold prospects. Skarn hornblende from the Banner Creek area (18RN069) yielded an age of 104.0 +/- 1.6 Ma, which places its formation relatively early in the magmatic history of the district. Fine-grained, holocrystalline granodiorite in the immediate vicinity of the Democrat prospect yielded a biotite cooling age of 96.9 +/- 2.0 Ma (18RN568), slightly older than the white mica age reported for the nearby mineralized rhyolite dike (89.4 +/- 0.7 M). White mica from a sericite-pyrite altered, quartz-feldspar porphyry dike in the Rosa Pass area yielded an age of 87.0 +/- 1.5 Ma (17MBW526). Sericite-altered intrusive rock from drill core at the Lone Tree prospect yielded an age of 93.2 +/- 1.2 Ma (18ET057), somewhat younger than the 40Ar/39Ar age determined for presumably magmatic white mica from a dike at the nearby Naosi prospect on the Montecristo property (100.0 +/- 0.7 Ma). The complete report and digital data are available through the DGGS website: http://doi.org/10.14509/30530.

Tags: 40ar/39ar, age dates, analyses, analyses and sampling, analytical lab results, analytical results, ar-ar, banner creek, bedrock, bedrock geology, buckeye creek, chlorite, cretaceous, crystals, democrat prospect, disseminated, epidote, exhumation, exploration, fairbanks mining district, feldspar, fluorite, geochronology, geologic, geology, granite, granodiorite, hornblende, isotopes, k-feldspar, lab methods, methods, mica, mineralogy, minerals, mining, muscovite, petrography, plagioclase, plutonic, porphyry, potassium, pyrite, quartz, resources, rhyolite, richardson mining district, rocks, sample location, sericite, skarn, twentyfive mile creek
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. 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, beechey point quadrangle, gasline, geomorphology, lidar, lidar lake polygons, proposed natural gas pipeline, remote sensing, shaded relief, state of, topographic map, trans-alaska pipeline
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Tanana 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, tanana quadrangle, trans-alaska pipeline
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. 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), gasline, geomorphology, lidar, proposed natural gas pipeline, raster image, remote sensing, sagavanirktok quadrangle, state of, trans-alaska pipeline, vegetation digital surface model (dsm)
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. 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, healy quadrangle, holocene, lidar, lidar las file format, point cloud data, remote sensing, slope instability, state of, trans-alaska pipeline
Organization: State of Alaska
A Guide to the Late Quaternary History of Northern and Western Kenai Peninsula, Alaska

Between 27 and 11 kyr ago, during the last major (Naptowne) glaciation, the northwestern and western Kenai Peninsula and the Cook Inlet trough were covered by ice except for local nunataks and small refugia, like the Caribou Hills. Landforms related to four glacial stades are recognized and paleogeographic maps document ice limits, drainage systems, glacial-impounded lakes, and glaciomarine terraces. Numerous multidisciplinary studies of glacial, vegetation, and insect histories document Holocene climatic changes.

Tags: alluvial deposits, beluga formation, bootlegger cove formation, climate change, coastal erosion, cook inlet, elmendorf stade, erosion, geologic hazards, geology, geomorphology, glacial deposits, glacial drift, glacial geology, glaciation, gravel, holocene, homer, ice, ice contact deposits, ice-contact, kenai peninsula, kenai quadrangle, kenai spur highway, killey stade, lethe tephra, meltwater, moosehorn stade, outwash, pleistocene, quaternary, radiocarbon dating, seldovia quadrangle, seward highway, seward quadrangle, skilak stade, sterling formation, sterling highway, surficial geology, tephra, tephrachronology, terrace, tsunami, vegetation
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. Bare-earth digital elevation models (DEM) represent the earth's surface with all vegetation and human-made structures removed.

Tags: alaska, alaska highway corridor, alaska pipeline, bare-earth digital elevation model (dem), big delta quadrangle, gasline, geomorphology, lidar, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska