Filters: Tags: Brooks Range (X)
24 results (30ms)
Filters
Date Range
Extensions Types
Contacts
Categories Tag Types Tag Schemes |
This data release contains elemental concentration data from the reanalysis of 13,930 archived stream-sediment sample and associated stream sediment reference material and 968 archived rock samples and associated rock reference material. All archived material was from samples that were collected in Alaska. Samples were retrieved from the USGS Mineral Program's sample archive in Denver, CO. Sample processing consisted of splitting the appropriate aliquot for the requested analyses. Sample splitting was performed in the USGS Mineral Program's sample prep facilities. 13,800 samples were analyzed using a multi-element analytical method involving decomposition of the sample by sodium peroxide and elemental analysis by...
Categories: Data;
Tags: Alaska,
Alaska Range,
Aleutian Islands,
Aleutian Range,
Alexander Archipelago,
This report provides detailed mapping (1:63,360-scale) in the Dalton Highway area, from Atigun Gorge to Slope Mountain, in the west-central Philip Smith Mountains quadrangle. The map area extends from the northern flank of the Endicott Mountains into the Arctic Foothills province.
The Alaska Division of Geological & Geophysical Surveys, in collaboration with the University of Alaska Fairbanks, collected mafic rocks in the Ivishak River area of the northeastern Brooks Range during summer 2009 for geochemical sampling. The sampled rocks, including lava flows, sills, and limy volcaniclastic strata, crop out within the carbonate-platform succession of the Carboniferous Lisburne Group. Refer to Herriott and others (2011) for additional information regarding the geologic and geographic context of these samples, preliminary implications of the geochemical data presented here, and a summary of known mafic rock occurrences in the Arctic Alaska terrane. The analytical data tables associated with this...
This report provides detailed (1:63,360-scale) surficial-geologic mapping in the Dalton Highway area, from the Sagavanirktok to the Itkillik Rivers, in the west-central Philip Smith Mountains quadrangle. The map area extends from the northern flank of the Endicott Mountains into the Arctic Foothills province.
During the 2006 field season, the Alaska Division of Geological & Geophysical Surveys conducted remote mapping as part of the Kavik River STATEMAP project.This surficial-geologic mapping was conducted to provide additional detail to the STATEMAP comprehensive geologic mapping as well as to serve as a stand-alone map publication.
Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1 Quadrangle are the closest surface expressions of Prudhoe Bay source and reservoir rocks. This study yields critical petroleum-related...
This data set describes nuclear microsatellite genotypes derived from eight autosomal loci (BCA6, BCA9, BCA11, BCA5, CRG, OXY13, TSP1.20.09 and TSP1.20.46) and a 366 base pair portion of the mitochondrial control region. A total of 665 Greater White-fronted Geese were examined by genotyping and 518 by sequencing with samples coming from its circumpolar range representing multiple flyways (Midcontinent, Pacific, Greenland, Palearctic). The sex of most samples was determined in the field by morphology or cloacal examination. Version History: First release: June 2018 Revised: July 2018 (ver. 2.0)
Categories: Data,
Data Release - Revised;
Tags: Alaska,
Alleles,
Anadyr,
Anderson River,
Animals/vertebrates,
These data are nutrient concentrations of seven key forage-plant species in the ranges of three caribou herds, in northern Alaska. During the growing seasons of 2011-2014, we collected forage samples from 21 plots within the ranges of three caribou herds: Central Arctic Herd (2011-2013), Teshekpuk (2011-2013), Western Arctic (2013-2014). We also analyzed stable isotopes of carbon (13C), nitrogen (15N) and sulfur (34S) in key plants. Further, we included of soil chemistry measures within the sampling range.
Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1 Quadrangle are the closest surface expressions of Prudhoe Bay source and reservoir rocks. This study yields critical petroleum-related...
This dataset is comprised of a vector topographic base map illustrating the Chandler Lake B-1 and C-1 1:63,360 quadrangles.
This geologic map and report present 1:63,360-scale geologic mapping of the south-central Sagavanirktok Quadrangle in northern Alaska. This area encompasses approximately 600 square miles in the northern foothills of the Brooks Range, and includes stratigraphic and structural elements important to understanding the oil and gas potential of Alaska's North Slope.
This data package includes three child items with data from montane-nesting bird surveys in the Arctic Network of National Parks in Alaska. Child Item One: "Data and Photographs from the Inventory of Montane-nesting Birds in the Arctic Network of National Parks, Alaska - Cape Krusenstern, Gates of the Arctic, Kobuk Valley, and Noatak". The data include (1) characteristics of bird survey sites, (2) vegetation classification at survey sites, (3) shorebird and predator detection surveys, (4) all bird species detection surveys, (5) bird breeding observations, (6) taxonomic details of detected birds, and 7) point count habitat photo index. Additionally, habitat photographs are included. Child Item Two: "Data and Photographs...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alaska,
Alpine/Tundra,
Animals/Vertebrates,
Avian abundance,
Baird Mountains,
This dataset is comprised of a vector topographic dataset illustrating the Dalton Highway area, from Atigun Gorge to Slope Mountain, in the west-central Philip Smith Mountains 1:250,000 quadrangle. The dataset was obtained from the USGS Alaskan 15-minute quadrangle series maps: Phillip Smith Mountains B-4, B-5, C-4, C-5, D-4, and D-5.
We examined the spatial distributions of Alaskan freshwater fishes using 2 frameworks, ecoregions and hydroregions (catchments). Ecoregions are defined by climate, terrain, vegetation, and soils; their utility in explaining distributions of aquatic organisms is based upon terrestrial-aquatic linkages. Analysis of the probable dispersal of aquatic organisms along past and current hydroregions provides an alternative and likely complementary path to understanding distributions of aquatic organisms. We use published distribution records for freshwater fishes of Alaska to construct a matrix of presence/absence records for each fish species in ecoregions and hydroregions of Alaska. We assessed faunal similarities among...
Categories: Data,
Publication;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Alaska Range,
Brooks Range,
M1-Fish
Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1 Quadrangle are the closest surface expressions of Prudhoe Bay source and reservoir rocks. This study yields critical petroleum-related...
This is a child item of the USGS Data Release: https://doi.org/10.5066/P9V4IKNZ This package contains seven tables of avian and habitat survey data from four parks (Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, Noatak National Preserve) of the Arctic National Park Network (ARCN), Alaska. Tables include: 1) characteristics of bird survey sites, 2) vegetation classification at survey sites, 3) shorebird and predator detection surveys, 4) all bird species detection surveys, 5) bird breeding observations, 6) taxonomic details of detected birds, and 7) point count habitat photos. Additionally, geospatial data corresponding to subsections, survey plots,...
Categories: Data;
Tags: Alaska,
Alpine/Tundra,
Animals/Vertebrates,
Avian abundance,
Baird Mountains,
This is a child item of the USGS Data Release: https://doi.org/10.5066/P9V4IKNZ This data package contains geospatial layers used for selecting bird survey locations in the Arctic Network of National Parks. 1)"ARCN_park_boundary" is a summary of park, preserve, and monument boundaries of Arctic Network lands, except those within Bering Land Bridge National Monument. 2)"ARCN_sample_plots" represents the 69, 10 X 10 km sample blocks surveyed and inventoried from 2001-2003 during US Geological Survey's National Park Service (NPS)-sponsored Inventory and Monitoring project. 3)"ARCN_sample_points" is a summary of the 1,652 locations at which bird surveys were conducted from 2001-2003 during US Geological Survey's NPS-sponsored...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Alaska,
Alpine/Tundra,
Animals/Vertebrates,
Avian abundance,
Baird Mountains,
Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This geologic map was produced by merging a bedrock geologic map and a surficial geologic map of the Eagle A-2 Quadrangle. This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1...
The Alaska Geochemical Database Version 4.0 (AGDB4) contains geochemical data compilations in which each geologic material sample has one best value determination for each analyzed species, greatly improving efficiency of use. The relational database includes historical geochemical data archived in the USGS National Geochemical Database (NGDB), the Atomic Energy Commission National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance databases, and the Alaska Division of Geological and Geophysical Surveys (DGGS) Geochemistry database. Data from the U.S. Bureau of Mines and the U.S. Bureau of Land Management are included as well. The data tables describe historical and new quantitative...
Geologic map of the Cobblestone Creek - May Creek area, east-central foothills, Brooks Range, Alaska
The Cobblestone Creek-May Creek area of the foothills of the Endicott Mountains is one of a series of areas selected for detailed mapping to document important structural and stratigraphic relationships at the mountain front of the east-central Brooks Range. The Cobblestone Creek-May Creek area is important in delineating the stratigraphic and structural relationships in this area because, unlike the adjacent valleys of the Itkillik and Nanushuk rivers, Cobblestone and May Creeks were not glaciated during the Pleistocene, and thus bedrock exposures are generally more continuous.
|
![]() |