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U-Pb age determinations of uraninite by electron microprobe analyses of ore samples from two solution-collapse breccia pipe uranium deposits, Grand Canyon region, northwest Arizona, USA 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 Geochemical reanalysis of rock and sediment samples from the Lower Middle Fork of the Salmon River collected as part of the Idaho Primitive Area Studies in the 1960’s through 1980’s 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 Whole rock major, minor, and trace element geochemistry of the upper part of the Mount Emmons-Redwell porphyry molybdenum (Climax-type) deposit, Redwell Basin, Crested Butte, Colorado 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 Airborne magnetic survey, northwestern Minnesota, 2021 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 Airborne magnetic and radiometric survey of the Wet Mountains and surrounding region, Custer and Fremont Counties, south-central Colorado, 2021 This data release provides digital flight-line and gridded data for a high-resolution airborne magnetic and radiometric survey over the region surrounding the Wet Mountains of southern Colorado, including parts of Custer and Fremont Counties. Data for this survey were collected by Sander Geophysics Limited International (SGL) under contract with the USGS. The survey was flown in June and July of 2021 using a helicopter equipped with a magnetometer mounted in a stinger extending from the nose of the aircraft and a gamma-ray spectrometer stowed onboard. The helicopter pilots followed pre-planned flight paths in a grid-like pattern, with east-west lines spaced 150 meters apart and north-south lines spaced 1,000 meters... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: "Mineral Resources"], AASG, Antelope Creek, Arkansas River, Association of State Geologists, All tags... Canon City, Colorado, Custer County, Earth Mapping Resources Initiative, EarthMRI, Economic Geology, Fremont County, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Grape Creek, MRP, Mineral Resources, Mineral Resources Program, National Cooperative Geologic Mapping Program, North Hardscrabble Creek, Oak Creek, Rosita Hills, Royal Gorge, Sedimentology, Sliver Cliff, Structural Geology, Tallahassee Creek, Texas Creek, U.S. Geological Survey, USA, USGS, USGS Science Data Catalog (SDC), United States, United States of America, Westcliffe, Wet Mountain Valley, Wet Mountains, ["Geophysics", aeromagnetic surveying, aeroradiometric surveying, airborne geophysical survey, economy, geophysics, geoscientificInformation, geospatial datasets, magnetic field (earth), potassium, south-central Colorado, thorium, uranium, Fewer tags Owasco Lake, New York spatial water-quality data, June 26 and October 8, 2019 This child item data set provides high-resolution, nearshore, spatial water-quality data collected from Owasco Lake, New York, on June 26 and October 8, 2019. All data are reported as raw measured values. Continuous water-quality monitors were mounted to a boat at approximately 0.5-meters below the water surface and used to measure nitrate, chlorophyll fluorescence (fChl), fluorescent dissolved organic matter (fDOM), dissolved oxygen, specific conductance, phycocyanin fluorescence (fPC), turbidity, pH, and temperature. Categories: Data; Tags: Contaminants, HABS, Finger Lakes, New York, Owasco Lake, Surface-Water Quality Monitoring, All tags... United States, Water Quality, algae, algal blooms, chlorophyll fluorescence (fChl), continuously-measured, cyanobacteria, dissolved oxygen, fluorescent dissolved organic matter (fDOM), freshwater (surface), hazards, limnology, nitrate, nutrient content (water), oxygen content (water), phycocyanin fluorescence (fPC), spatial, specific conductance, surface water quality, synoptic, turbidity, water pH, water temperature, Fewer tags Coastal Salinity Index for Monitoring Drought To address the data and information gap for characterizing coastal drought, a coastal salinity index (CSI) was developed using salinity data (Conrads 2016; Conrads and Darby, 2017). The CSI uses an approach similar to the Standardized Precipitation Index (SPI), a readily available drought index that is widely used for monitoring meteorological droughts (McKee and others, 1993). The CSI substitutes total monthly precipitation with monthly mean salinity data to determine the probability of recording a given salinity value in a particular month. The initial investigation demonstrated that the index could be used to delineate short- and long-term drought (saline) and wet (high freshwater inflow) conditions; however,... Categories: Data; Tags: Everglades National Park, USGS Science Data Catalog (SDC), brackish, ecology, estuary, All tags... field monitoring stations, mesohaline, oligohaline, salinity, water quality, Fewer tags Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Crop Land Data Layer 2014 This tabular data set represents the percent of land cover classes from the 2014 Crop land Data Layer compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is the "2014 Crop Land Data Layer" produced by the United States Department of Agriculture (USDA) National Agricultural Statistics Service (NASS, 2015). Reach catchment information characterizes data at the local scale. Reach catchments accumulated upstream through the river network characterizes... Categories: Data; Types: Citation; Tags: CDL, Catchment, Conterminous United States, Crop Land Data Layer, CropScape, All tags... Inlandwaters, NAWQA, NHDPlus, SPARROW, agriculture, crop cover, crop estimates, cropland, land cover, Fewer tags Distribution Models Predicting Groundwater Influenced Ecosystems in the Northeastern United States Globally, groundwater dependent ecosystems (GDEs) are increasingly vulnerable to groundwater extraction and land use practices. Groundwater supports these ecosystems by providing inflow, which can maintain water levels, water temperature, and chemistry necessary to sustain the biodiversity that they support. Many aquatic systems receive groundwater as a portion of base flow, and in some systems (e.g., springs, seeps, fens) the connection with groundwater is significant and important to the system’s integrity and persistence. Groundwater management decisions for human use may not consider ecological effects of those actions on GDEs, which rely on groundwater to maintain ecological function. This disconnect between... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Ecology, Hydrology, Land Use Change, New England, Remote Sensing, All tags... USGS Science Data Catalog (SDC), Water Resources, Wildlife Biology, groundwater, groundwater influenced ecosystems, imageryBaseMapsEarthCover, modeling, northeastern United States, northeastern states, prediction, Fewer tags Fish Surveys within 500-meters of Alasmidonta heterodon in the Connecticut and Delaware Watersheds from 1999 - 2019 The dwarf wedgemussel (Alasmidonta heterodon) is a federally endangered freshwater mussel that once ranged from New Brunswick to North Carolina, but now only exists in isolated populations throughout its diminished range. This study aimed to understand links between fish abundance and dwarf wedgemussel abundance and occurrence in the Connecticut and Delaware watersheds. Specifically, my study objectives were to 1) characterize fish assemblages near dwarf wedgemussel locations and unoccupied locations, 2) determine if dwarf wedgemussel occurrence and abundance are related to abundance of the known host fish species, tessellated darter and other potential host fish species per St. John White et. al. (2017). Two fish... Categories: Data; Tags: Connecticut, Massachusetts, New England, New Hampshire, New Jersey, All tags... New York, USGS-EMA-LOW-SB SMC: Freshwater mussels, biota, dwarf wedgemussel, environment, field sampling, fish, fish surveys, tesselated darter, unionid, Fewer tags Total neutron scattering of methane in Niobrara Formation samples at the wet-gas maturity level Petroleum within unconventional source-rock reservoirs is hosted in organic matter and mineral pore space as well as in voids and microfractures. Recent work has shown that for source-rock reservoirs in the dry gas window, significant portions of methane (CH4), the main component of petroleum at elevated maturities, can be stored within fine organic matter porosity. However, within reservoirs at lower thermal maturities (e.g., peak oil or wet-gas conditions), the distribution and behavior of CH4 and the higher alkanes that comprise gas condensates across pore sizes is unclear, especially for fine pores with diameters <50 nm. Understanding CH4 within these settings provides insight for petroleum generation, movement,... Categories: Data; Tags: Colorado, Contrast Matching, Denver-Julesburg Basin, Energy Resources, Gas Condensate, All tags... Geochemistry, Natural Gas, Neutron Scattering, Shale, USGS Science Data Catalog (SDC), Fewer tags Nearshore bathymetry of the Columbia River littoral cell, Washington and Oregon, 2014 This portion of the USGS data release presents bathymetry data collected during surveys performed in the Columbia River littoral cell, Washington and Oregon in 2014 (USGS Field Activity Number 2014-631-FA). Bathymetry data were collected using four personal watercraft (PWCs) equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The sonar systems consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9 degree beam angle. Raw acoustic backscatter returns were digitized by the echosounder with a vertical resolution of 1.25 cm. Depths from the echosounders were computed using sound velocity profiles measured using a YSI CastAway CTD during... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bathymetry and Elevation, CMHRP, Clatsop County, Coastal and Marine Hazards and Resources Program, Columbia River, All tags... Echo Sounders, GPS (Global Positioning System), GPS measurement, Global Positioning System (GPS) observations, Grays Harbor County, PCMSC, Pacific Coastal and Marine Science Center, Pacific County, Pacific Ocean, U.S. Geological Survey, USGS, Water Depth, bathymetry, bathymetry measurement, elevation, single-beam echo sounder, Fewer tags Captures and Trapping Effort for Deer Mice (Peromyscus sonoriensis) at Point Reyes National Seashore, California, USA from 2021 to 2022 These data represent trapping effort and captures of deer mice at Point Reyes National Seashore, Marin County, California. Deer mice were captured and marked with ear tags to allow identification of individuals. The location of captures can be used in a spatially explicit capture recapture model to estimate density of mice and how mouse density varies by site and habitat type. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: California, Ecology, Marin County, Point Reyes National Seashore, USGS Science Data Catalog (SDC), All tags... Wildlife Biology, biota, ecology, mammals, modeling, population and community ecology, restoration, Fewer tags Data on dietary preference by brown treesnakes on Guam These data address experimental evaluations of dietary preference by captive brown treesnakes on Guam. Snakes were collected from the wild in areas with birds present and in areas without birds present 2018–2019. Snakes were then run through preference trials during which they were offered first live lures (mouse and finch) in snake traps on opposite sides of the arena. On the second night, snakes were offered dead carrion (baits) of each prey type (mouse, chicken chick) equal to 30% of their mass. Choices were monitored overnight using game cameras and then transcribed the following day. Individuals were classified as BIRD or NOBIRD snakes based on whether they had birds in their gut contents at the time of capture.... Categories: Data; Tags: Ecology, Guam, Guam National Wildlife Refuge, Preference, USGS Science Data Catalog (SDC), All tags... environment, Fewer tags Hawaii Volcanoes National Park Plant Trait, Percent Cover, and Environmental Data 2014 This data release includes data and metadata on 1) the coverage and composition of plants 2) species specific plant traits 3) sampling locations and 4) environmental data. All sites were within Hawaii Volcanoes National Park on Hawaii Island. Plant cover data were obtained from National Park Service Inventory and Monitoring Program. Plant trait data was collected for these plots in 2014. This study aims to evaluate how traits of native and exotic plant species change along environmental gradients and what this suggests for plant competition and invasion. Categories: Data; Tags: Ecology, Hawaii, Hawaii Volcanoes National Park, USGS Science Data Catalog (SDC), botany, All tags... bryophyte, ecology, forest resources, forest restoration, invasive species, plant ecology, seedling recruitment, tropical forest dynamics, Fewer tags Polyethylene Particle Detection (counts) during Environmental Sampler Comparison We designed two new samplers for monitoring airborne particulates, including fungal and fern spores and plant pollen, that rely on natural wind currents (Passive Environmental Sampler) or a battery operated fan (Active Environmental Sampler). Both samplers are modeled after commercial devices such as the Rotorod® and the Burkard samplers, but are more economical and require less maintenance than commercial devices. We conducted wind tunnel comparisons of our two new samplers to Rotorod® samplers using synthetic polyethylene spheres (12 - 160 µm in diameter) to compare numbers and size range of particulates that are captured by the samplers. This dataset contains raw numbers of polyethylene spheres that were captured... Categories: Data; Tags: Environmental DNA, Environmental Sampler, Hawaiii, Spore Traps, environment Viable Ceratocystis Propagules in Frass These data include Ceratocystis culture viability results from ambrosia beetle (Coleopetera: Scolytinae) frass. Frass is defined as fine particles of macerated wood or boring dust, beetle parts, and feces. Frass was collected from individual ambrosia beetle galleries in Ceratocystis-infected ʻōhiʻa (Metrosideros polymorpha) trees on Hawaiʻi Island, a phenomenon referred to as Rapid ʻŌhiʻa Death (ROD). We recorded the height at which these beetles produced frass, how long we collected frass from galleries, and the total number of culturing tests from individual galleries. Categories: Data; Tags: Ambrosia Beetle, Frass, Hawaii, Hawaii Island, Rapid ʻŌhiʻa Death, All tags... biota, Fewer tags Modeled potential presence of Ceratocystis luhuohia across Hawaiian Islands Hawaiʹi’s most widespread native tree, ʹōhiʹa lehua (Metrosideros polymorpha), has been dying across large areas of Hawaiʹi Island mainly due to two fungal pathogens (Ceratocystis lukuohia and Ceratocystis huliohia) that cause a disease collectively known as Rapid ʹŌhiʹa Death (ROD). Here we examine patterns of positive detections of C. lukuohia as it has been linked to the larger mortality events across Hawaiʹi Island. Our analysis compares the environmental range of C. lukuohia and its spread over time through the known climatic range and distribution of ʹōhiʹa. This data set is a georeferenced raster file, containing the projected potential presence of C.lukuohia across the main Hawaiian Islands using climatic... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Ceratocystis lukuohia, Hawaii, Metrosideros polymorpha, Ohia, Rapid Ohia death, All tags... biota, Fewer tags Ohia Dieback Study - Hawaii Island Canopy Status Assessment Table, 1977 - 2015 We analyzed very-high-resolution imagery to assess status of Metrosideros polymorpha forests across an 83,603 hectare study area that experienced extensive canopy dieback in the 1970s on the eastern side of the island of Hawaii. Using GIS we generated 1170 virtual vegetation plots with a 100 m radius; 541 plots in areas mapped in 1977 with trees dead or mostly defoliated (dieback), and 629 plots in adjacent wet forest habitat, previously mapped as non-dieback condition. In each plot we estimated the percent of M. polymorpha trees dead or mostly defoliated, and percent of trees with healthy crowns. These results were combined with habitat data to produce a spatial model depicting probability of canopy dieback within... Categories: Data; Tags: Hawaii, Metrosideros polymorpha, biota, canopy dieback, field inventory and monitoring, All tags... ohia, rain forests, regeneration, vegetation, Fewer tags Ohia Dieback Study - Dieback Model Results Table Several previously published reports and geographic information system (GIS) data layers were used to code information on site attributes for each assessment plot using the spatial join tool in ArcMap. This information was used for an analysis of dieback and non-dieback habitat characteristics. The results of this analysis are presented in this table which depicts the probability of heavy to severe canopy dieback occurring at some time at a particular 30 x 30 m pixel location within the study area. Categories: Data; Tags: Hawaii, Metrosideros polymorpha, analytical modeling, biota, canopy dieback, All tags... ohia, rain forests, regeneration, vegetation, Fewer tags « 1 2 3 4 5 6 ... »