AndreaBozzo/ceres-open-data-index huggingface dataset:
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. 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, state of, trans-alaska pipeline, tyonek quadrangle, vegetation digital surface model (dsm)
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. Hillshade (shaded relief) images, produced from bare-earth DEMs provide a visual representation of topographic relief.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, hillshade image, lidar, mount hayes quadrangle, proposed natural gas pipeline, remote sensing, shaded relief, state of, topographic map, trans-alaska pipeline
Organization: State of Alaska
Derivative Geologic-Materials Map of the Anchorage C-8 NW Quadrangle, Alaska

This map is one of a series of four 1:25,000-scale quadrangle maps (Anchorage C-8 NW Quadrangle) intended to provide information on the geology and construction materials along the southern margin of the Talkeetna Mountains between Little Susitna River and Nancy Lake, Alaska. Additionally, the geologic map portrays faults, if present, as well as other lineaments that represent either faults or erosional features.

Tags: alaska, anchorage quadrangle, arkose ridge formation, castle mountain, castle mountain fault, construction materials, early jurassic, geology, holocene, late cretaceous, mesozoic, pleistocene, quaternary, southcentral alaska, state of, tertiary, tyonek formation
Organization: State of Alaska
Bedrock geologic map of the Circle mining district, Alaska

Report of Investigation 95-2B, Bedrock geologic map of the Circle mining district, Alaska, provides detailed (1:63,360-scale) interpreted bedrock mapping of portions of U.S. Geological Survey Circle B-2, B-3, B-4, C-2, C-3, and C-4 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. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/2515.

Tags: ar-ar, bates creek, bear creek, bedrock, bedrock creek, bedrock geologic map, bedrock geology, birch creek, bonanza creek, bottom dollar creek, boulder creek, buckley bar creek, butte creek, circle hot springs, cretaceous, cripple creek, crooked creek, deadwood, deadwood creek, dggs, dome creek, eagle creek, eagle summit, easley creek, faults, fish creek, gems, gems ncgmp09, geochronology, geologic map, geology, gold dust creek, granite, granodiorite, graveyard creek, greenhorn creek, half dollar creek, holdem creek, hornfels, hot springs creek, independence creek, k-ar, ketchem creek, ketchem dome, mammoth creek, marble, mastodon creek, mastodon dome, miller creek, mineral exploration, mineral resources, mineralogy, minerals, mining, paleozoic, pinnell mountain, pinnell trail, plutonic rocks, plutons, porcupine creek, porcupine dome, porphyry, portage creek, ptarmigan creek, quartzite, sawpit creek, schist, slate creek, switch creek, tertiary, tintina fault, traverse creek, two-bit creek, willow creek, yankee creek
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 dataset represents all classified laser returns from the lidar survey and their associated geospatial coordinates.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, lidar, lidar las file format, mount hayes quadrangle, point cloud data, proposed natural gas pipeline, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
Major-element oxide, trace element, and glass compositional analyses from Holocene to historical eruptions from Pavlof Volcano, Alaska

During the summers of 2017 and 2018, Alaska Volcano Observatory (AVO) geologists from the University of Alaska, Fairbanks (UAF), the U.S. Geological Survey (USGS), and the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted fieldwork at Pavlof Volcano (55.4173 N, -161.8937 W), on the Alaska Peninsula, Alaska. The fieldwork was conducted in support of geologic mapping and tephrostratigraphy, to improve the documentation of recent Pavlof eruptions, and to better assess hazards associated with Pavlof eruptions. As a result, samples of lava and various pyroclasts (mainly bombs and lapilli) were collected for whole rock geochemistry analyses. This report includes whole rock major- and trace-element data from lava and bomb samples from the 1996, 2013, 2014, and 2016 eruptions, along with samples of lava and lapilli fall deposits, presumed to be of Holocene age, collected from outcrops around Pavlof and Pavlof Sister volcanoes. We also include electron probe microanalyzer (EPMA) data from tephra glass samples from the 1986 (AT-2822), 1996 (AT-2823), 2007 (AT-2824), and 2013 (AT-2821) eruptions. These samples were initially analyzed at the USGS office in Menlo Park and were re-analyzed for this report in the Advanced Instrumentation Laboratory (AIL) at UAF for comparison. Tephra EPMA glass data from the 2016 eruption, analyzed in the AIL, is also included from sample AT-3680. The analytical data tables associated with this report are available in digital format as comma-separated value (CSV) files. Users can access the complete report and digital data from the DGGS website: http://doi.org/10.14509/30580.

Tags: alaska, alaska peninsula, analyses, ashfall, basalt, dggs, geochemistry, geologic, geology, glass, hazards, holocene, igneous, lahar, lava flow, major oxides, methods, pavlof, pavlof sister, pavlof volcano, petrology, provenance, quaternary, rhyolite, rocks, stratigraphy, surface, tephra, tephrostratigraphy, trace elements, volcanic, volcanic eruption, volcanic rocks, volcanoes, volcanology
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Nabesna 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, nabesna quadrangle, proposed natural gas pipeline, remote sensing, shaded relief, state of, topographic map, trans-alaska pipeline
Organization: State of Alaska
Regional tsunami hazard assessment for False Pass and Perryville, Alaska

We assess potential tsunami hazard for the coastal communities of False Pass on Unimak Island and Perryville on the Alaska Peninsula. The primary tsunami hazard for these communities is considered to be near-field, with the major threat originating from tsunamigenic earthquakes along the Alaska-Aleutian megathrust. We numerically model tsunamis generated by three different megathrust earthquakes, analyze tsunami wave dynamics, and develop approximate tsunami hazard maps for the communities. The hypothetical tsunami scenarios examined simulate Mw9.0 megathrust earthquakes with a slip distribution in the 5-54 km (3-33 mi) depth range along the Alaska-Aleutian megathrust. The maximum runup heights are 13 m (42 ft) in False Pass and 21 m (69 ft) in Perryville. Results presented here are intended to provide guidance to local emergency management agencies in initial tsunami inundation assessment, evacuation planning, and public education for mitigation of future tsunami hazards. The complete report and digital data are available from the DGGS website: http://doi.org/10.14509/30192.

Tags: alaska peninsula, aleutian islands, bathymetry, coastal, earthquake, engineering, engineering geology, false pass, faults, flood, geologic, geologic hazards, geology, geotechnical, hazards, perryville, subduction, subsidence, surface, tectonics, topography, tsunami, unimak island, uplift, water
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Philip Smith 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 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, gasline, geomorphology, lidar, lidar canopy cover, philip smith mountains quadrangle, 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, 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. Hillshade (shaded relief) images, produced from bare-earth DEMs provide a visual representation of topographic relief.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, hillshade image, lidar, proposed natural gas pipeline, remote sensing, shaded relief, state of, tanana quadrangle, topographic map, trans-alaska pipeline
Organization: State of Alaska
Airborne magnetic geophysical survey of the Holitna basin area, Alaska, data compilation

The Holitna airborne magnetic geophysical survey covers the Holitna basin, located in the Sleetemute and Lime Hills quadrangles surrounding the town of Stony River in southwest Alaska. Magnetic data were collected from September 8th to October 7th, 1997. A total of 13,658 line kilometers were collected covering 9,229.1 square kilometers. Line spacing was 800 meters (m). Data were collected using a fixed-wing aircraft with a mean ground clearance of 90 m. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/30459.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, basket creek, beaverhouse hill, big lake, black creek, cheeneetnuk river, cotton village, door creek, door mountains, elutuli creek, exploration, frequency domain electromagnetic data, gagaryah river, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, gridded data, hoholitna river, holitna river, hungry creek, inowak creek, itulilik creek, keefer creek, kulukbuk hills, kuskokwim river, lime hills, lime village, line data, magnetic data, magnetic survey, magnetics, moose creek, moose village, muskeg creek, muskrat creek, red mountain, remote sensing, shoeleather creek, sleetmute, stink river, stony river, swift river, tatlawiksuk river, tishimna lake, titnuk creek, trout lake, tundra lake, vreeland creek, why lake
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment K: Nightmute to Kipnuk

Aerial photographs of the coastline from Nightmute to Kipnuk were collected on August 11, 2015 and September 9, 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: coastal, coastal and river, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, hazards, kipnuk, marine geology, methods, nightmute, raster image, surficial
Organization: State of Alaska
Zircon U-Pb age data, Alaska Highway Corridor, Tanacross and Nabesna quadrangles, Alaska

Twenty-two igneous and metamorphic rock samples were collected in a 20-km-long swath centered on the Alaska Highway between Tetlin Junction, Alaska, and the Canada border. Igneous and metamorphic rock samples were submitted to the Apatite to Zircon, Inc. laboratory (A2Z), where zircon U-Pb age analysis, using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS), was performed by Paul O'Sullivan. The 15 felsic plutonic rock samples and one gabbro sample yield Cretaceous zircon U-Pb weighted-mean ages ranging from 95.7 Ma to 106.2 Ma. Zircons from a metadiorite yield a Triassic weighted-mean age of about 241.9 Ma. Metamorphic zircons from two samples with felsic igneous protoliths yield Mississippian weighted-mean ages of 351.7 Ma and 354.6 Ma. Detrital zircons from two metaconglomerates yield individual grain ages from 100 Ma to 1,811 Ma, but are predominantly between 300 Ma and 345 Ma. Detrital zircons from a quartzite yield peaks at about 2,648 Ma, 1,946 Ma, and 1,807 Ma. Samples were analyzed for a variety of suites of major and trace elements depending on the sample type. The analytical data tables associated with this report are being released in digital format.

Tags: age dates, alaska highway corridor, analyses and sampling, bedrock, bedrock geology, carboniferous, detrital zircon, devonian, geochronology, geology, igneous rocks, isotopes, metamorphic rocks, mississippian, nabesna quadrangle, tanacross quadrangle, triassic, u-pb
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. 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, lidar, lidar las file format, point cloud data, proposed natural gas pipeline, remote sensing, state of, trans-alaska pipeline, valdez quadrangle
Organization: State of Alaska
Rock-eval pyrolysis, vitrinite reflectance, and kerogen microscopy results from Miocene carbonaceous mudstones and coals in outcrop, McGrath Quadrangle, southwestern Alaska

The Cenozoic Holitna basin is a gravity-defined feature that sits astride the Denali-Farewell fault zone in southwestern Alaska. The basin corresponds to a gravity low in excess of -40 milligals (mGals). No outcrops exist within the footprint of the gravity low and no subsurface data are available; consequently, the stratigraphy and age of its fill are unknown. The Alaska Division of Geological & Geophysical Surveys (DGGS) investigated the shallow gas potential of the basin during the summers of 2000 and 2002 by studying Tertiary coal-bearing rocks exposed along the Denali-Farewell fault zone to the northeast of the basin in the southern McGrath Quadrangle as an outcrop analog to the subsurface stratigraphy of the basin. We visited exposures along Windy Fork Middle Fork River to collect samples for source-rock characterization, including Rock-Eval pyrolysis, vitrinite reflectance measurements, and visual kerogen analysis. Rock-Eval pyrolysis results from carbonaceous mudstone and coal samples along Windy Fork indicate the presence of Type II and Type III kerogen, which are expected to be excellent sources of oil and gas under favorable subsurface conditions. Available thermal maturity data for the samples indicate they are immature for oil and gas, but are in the late pre-oil phase of maturity. If a coal- and carbonaceous-mudstone-bearing succession similar to the rocks discussed in this report from the McGrath Quadrangle are present in the subsurface of the gravity-defined Holitna basin at favorable depths, they can be expected to have significant thermogenic oil and gas generative potential.

Tags: carboniferous, coal, energy, mcgrath quadrangle, miocene, pyrolysis, resources, rock-eval pyrolysis, vitrinite
Organization: State of Alaska
Shoreline change at Alaska coastal communities, Napakiak, 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, marine geology, napakiak, outreach, sea level changes, shelf, shoreface, storm surge, surface, tides, topography, water
Organization: State of Alaska