|
|
Geophysical measurements were collected by the U.S. Geological Survey (USGS) at five sites in Interior Alaska in September 2021 for the purposes of imaging permafrost structure and quantifying variations in subsurface moisture content in relation to thaw features. Borehole nuclear magnetic resonance (NMR) data were collected at two sites in order to determine liquid water content at depth in shallow boreholes. NMR data were collected in a 2.25 m-deep borehole at the North Star golf course adjacent to one of the ERT profiles, and in another two 1.625 m-deep boreholes adjacent to Big Trail Lake where previous NMR measurements were made in 2019 and 2020.
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Active layer thickness,
Alaska,
Bonanza Creek,
Borehole nuclear magnetic resonance,
Disturbance, All tags...
Electrical resistivity tomography,
Fairbanks North Star Borough,
GGGSC,
Geology, Geophysics, and Geochemistry Science Center,
Land Change Science Program,
LandCarbon Program,
U.S. Geological Survey,
USGS,
electrical resistivity imaging,
environment,
field monitoring stations,
geoscientificInformation,
hydrologic processes,
permafrost,
soil moisture,
soil temperature, Fewer tags
|
This data release compiles the electron microprobe spot analyses of U, Th, and Pb concentrations in uraninite (U oxide) particles, and corresponding calculated age determinations, measured in samples of ore from two uranium-copper breccia pipe ore bodies, the Canyon (Pinyon Plain) and Hack II deposits. The U-rich samples that were analyzed typify the deposits hosted by solution-collapse breccia pipes in the Grand Canyon region of northwestern Arizona. Applying procedures outlined by Bowles (1990), the U, Pb, and Th measurements from each spot analysis were used to calculate a model age for the formation of each uraninite particle. The U, Pb, and Th analyses and calculated age determinations are provided as additional...
Categories: Data;
Tags: <1GB,
Arizona,
Canyon mine,
Coconino County,
GGGSC, All tags...
Geology, Geophysics, and Geochemistry Science Center,
Grand Canyon,
Hack II mine,
MRP,
Mineral Resources Program,
Mohave County,
Tusayan,
U.S. Geological Survey,
USA,
USGS,
USGS Science Data Catalog (SDC),
United States,
University of Arizona Department of Mining and Geological Engineering,
University of Arizona Lunar and Planetary Lab,
breccia pipe,
copper,
economic geology,
electron microprobe,
energy resources,
geology,
geoscientificInformation,
metallic mineral resources,
mine,
mineral resources,
mineralogy,
northwest Arizona,
radiometric dating,
uranium, Fewer tags
|
This is a geochemical data set from the reanalysis of 44 rock samples collected between 1966 and 1970, and 107 sediment samples collected in 1966 and 1967. These samples were collected by the U.S. Geological Survey for a study investigating the mineral resources of the Idaho Primitive Area (Cater et al., 1973). The samples are from the Lower Middle Fork of the Salmon River, including the tributaries of Big Creek, Camas Creek, Brush Creek, Wilson Creek, Waterfall Creek, Ship Island Creek, Reese Creek, Stoddard Creek, and Papoose Creek. The overall objective of this study is to characterize the regional impact of legacy mining for the Frank Church River of No Return Wilderness Area. Mary P. Rossillon (1981) explored...
Categories: Data;
Tags: Annie Creek,
Atomic absorption analysis,
Atomic emission spectroscopy,
Beaver Creek,
Big Creek, All tags...
Big Ramey Creek,
Biotite,
Biotite-feldspar,
Biotite-muscovite,
Botha Creek,
Brush Creek,
Cabin Creek,
Calc-silicate rock,
Camas Creek,
Camp Creek,
Canyon Creek,
Cave Creek,
Challis intrusive,
Challis volcanic group,
Chemical analysis,
Chlorite-biotite,
Cliff Creek,
Coin Creek,
Copper Creek,
Coxey Creek,
Crooked Creek,
Diorite,
Eagan Creek,
Fawn Creek,
GGGSC,
Geochemistry,
Geochemistry,
Geology,
Geology, Geophysics, and Geochemistry Science Center,
Glacial deposit,
Gneiss,
Granite,
Granodiorite,
Hand Creek,
Holy Terror Creek,
Hornblende-biotite,
Idaho,
Idaho Primitive Area,
Jackass Creek,
Lake Creek,
Lapilli tuff,
Latite,
Lehmi group,
Lewis Creek,
Little Marble Creek,
Little Ramey Creek,
Logan Creek,
Lower Middle Fork Salmon,
MRP,
Mass spectroscopy,
Metasedimentary rock,
Middle Fork Salmon River,
Middle Fork terraces,
Migmatite,
Mineral Resources Program,
Monumental Creek,
Moore Creek,
Mule Creek,
Neoproterozoic intrusive,
Paint Creek,
Papoose Creek,
Parker Mountain,
Phyllite,
Porphyry,
Quartzite,
Quartzose,
Rainbow Creek,
Reese Creek,
Rhyolite,
Rush Creek,
Schistose,
Seafoam,
Sedimentology,
Ship Island Creek,
Smith Creek,
Snowslide Creek,
Stoddard Creek,
Sunnyside tuff,
Syenite,
Telephone Creek,
Threemile Creek,
Thunder Mountain,
Timm Creek,
Trap Creek,
USGS Science Data Catalog (SDC),
United States,
Waterfall Creek,
Wildhorse Creek,
Wilson Creek,
Windermere supergroup,
Woodtick Creek,
Yellowjacket,
Yellowjacket Creek, Fewer tags
|
This U.S. Geological Survey (USGS) data release provides whole rock major, minor, and trace element geochemical data from the fluorine-rich Mount Emmons-Redwell porphyry molybdenum (Climax-type) deposit (Mt. Emmons-Redwell deposit), located approximately 5.6 km (3.5 mi) northwest of Crested Butte, Colorado. The Mt. Emmons-Redwell deposit partly underlies Redwell Basin on the northwest flank of Mount Emmons in the west-central region of the Colorado Mineral Belt. Mineralization of the Mt. Emmons-Redwell deposit occurs at depth as vein, veinlet, stockwork, and fracture-hosted Climax-type mineralization [308 Mt at 0.32% Mo (Galey, 1978; Guarnera and Anderson, 2007)], and is associated with the Mt. Emmons igneous complex....
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: <1GB,
Climax-type deposit,
Colorado,
Colorado Mineral Belt,
Crested Butte, All tags...
Elk Mountains,
Geology, Geophysics, and Geochemistry Science Center (GGGSC),
Gunnison County,
Mineral Resources Program (MRP),
Mount Emmons,
Mt. Emmons-Redwell deposit,
Oh-be-joyful Creek,
Redwell Basin,
Redwell Creek,
USGS Science Data Catalog (SDC),
United States,
aluminum,
analytical chemistry,
antimony,
arsenic,
atomic emission spectroscopy (AES),
barium,
beryllium,
bismuth,
boron,
cadmium,
calcium,
cerium,
cesium,
chemical analysis,
chromium,
cobalt,
copper,
dysprosium,
economic geology,
erbium,
europium,
exploration geochemistry,
fluorine,
gadolinium,
gallium,
geochemical data,
geochemistry,
geoscientificInformation,
germanium,
hafnium,
holmium,
igneous rocks,
indium,
inductively coupled plasma-optical emission-mass spectroscopy (ICP-OES-MS),
iron,
lanthanum,
lead,
lithium,
lutetium,
magnesium,
manganese,
mass spectroscopy,
mineral deposits,
mineral resources,
molybdenum,
neodymium,
nickel,
niobium,
phosphorus,
plutonic rocks,
porphyry deposit,
potassium,
promethium,
rock chemistry,
rubidium,
samarium,
scandium,
sedimentary rocks,
selenium,
silicon,
silver,
sodium,
strontium,
sulfur,
tantalum,
tellurium,
terbium,
thallium,
thorium,
thulium,
tin,
titanium,
tungsten,
uranium,
vanadium,
wavelength dispersive X-ray fluorescence spectrometry (WDXRF),
x-ray fluorescence,
ytterbium,
yttrium,
zinc,
zirconium, Fewer tags
|
This data release provides digital flight line data for a high-resolution airborne magnetic survey over parts of northwestern Minnesota near the town of Mentor. The airborne survey was funded by the Earth Mapping Resources Initiative and was designed to meet complementary needs related to geologic mapping and characterization of mineral resource potential. A total of 40,139-line km of magnetic data were acquired over an irregular-shaped area of 9140 km2. Data were collected from a fixed-wing aircraft flown at mean terrain clearance of 120 meters (m) above topography along N-S flight lines spaced at 250 m intervals. Tie lines were flown in an E-W direction every 2500 m. Data were collected by EDCON-PRJ and NV5 Geospatial,...
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Becker County,
Clay County,
Clearwater River,
Earth Mapping Resources Initiative,
EarthMRI, All tags...
GGGSC,
Geology, Geophysics, and Geochemistry Science Center,
MRP,
Marsh River,
Marshall County,
Mentor Complex,
Mineral Resources Program,
Minnesota,
Norman County,
Pennington County,
Polk County,
Red Lake County,
Red Lake River,
Silver River,
Thief River,
Thief River Falls,
U.S. Geological Survey,
USA,
USGS,
United States,
United States of America,
Wild Rice River,
aeromagnetic surveying,
airborne geophysical survey,
economy,
geophysics,
geoscientificInformation,
geospatial datasets,
horizontal magnetic gradiometry,
magnetic field (earth),
northwestern Minnesota,
vertical magnetic gradient, Fewer tags
|
View more...
|
