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Pb isotope measurements of road dusts and background geologic materials in the Viburnum Trend resource extraction area of southeast Missouri (2011) Abstract The isotopic composition of Pb in fugitive dust suspended by a vehicle from 13 unsurfaced roads in Missouri was measured to identify the source of Pb within an established long-term mining area. A three end member model using 207Pb/206Pb and concentration as tracers resulted in fugitive dust samples plotting in the mixing field of well characterized heterogeneous end members. End members selected for this investigation include the 207Pb/206Pb for 1) a Pb-mixture representing mine tailings, 2) aerosol Pb impacted soils within close proximity to the Buick secondary recycling smelter, and 3) an average of soils, rock cores and drill cuttings representing the background characteristics. Aqua regia total concentrations... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Iron, Reynolds, Dent, Washington, and Crawford Counties, Iron, Reynolds, Dent, Washington, and Crawford Counties, Pb apportionment, Pb apportionment, Pb isotopic ratios, All tags... Pb isotopic ratios, Road Dust, Road Dust, Sequential extraction, Sequential extraction, USGS Science Data Catalog (SDC), Unsurfaced roads, Unsurfaced roads, Viburnum Trend Mining District, Viburnum Trend Mining District, Fewer tags Detailed geologic mapping geodatabase for the Blue Ridge Parkway in Virginia with station point photographs The US Geological Survey, in cooperation with the National Park Service, mapped 35 7.5-minute quadrangles, within a 2-mile-wide+ corridor centered on the Parkway, from BLRI (Blue Ridge Parkway) Mile Post (MP) 0 near Afton, Virginia southward to MP 218 at Cumberland Knob, approximately 1.3 km south of the Virginia – North Carolina State Line. Detailed bedrock geologic mapping for this project was conducted at 1:24,000-scale by systematically traversing roads, trails, creeks, and ridges within and adjacent to the 2-mile-wide+ corridor along the 216.9-mile length of the BLRI in Virginia. Geologic data at more than 23,000 station points were collected during this project (September 2009 – February 2014), with approximately... Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Adney Gap, Air Bellows Gap, Alligator Back Formation, Antietam Formation, Ashe Formation, All tags... Ashville, Bald Mountain, Balsam Gap, Beacon Heights, Bear Den, Bear Mountain Gap, Bearwallow Gap, Bedrock, Beech Gap, Beetree Gap, Benge Gap, Big Island, Big Witch Gap, Biltmore Estate, Blackhorse Gap, Blowing Rock, Blue Ridge Music Center Visitor Center, Blue Ridge Park Visitor Center and Park Headquarters, Blue Ridge Parkway, Bluff Mountain, Bottom Creek Metagranitoid Suite, Buck Creek Gap, Buena Vista, Bull Gap, Carbonate, Cherokee, Cherokee Indian Reservation, Chestoa View, Chilhowee Group, Cold Mountain, Conococheague Formation, Crabtree Falls, Crabtree Faults, Craggy Gardens Visitor Center, Craven Gap, Crossnore, Crossnore Plutonic Suite, Cumberland Knob, Daniel Boone's Trace, Deep Gap, Devils Backbone Overlook, Devils Courthouse, Diabase, Doughton Park, E.B. Jeffress Park, Elbrook Formation, Elk Pasture Gap, Ervin, Ervin, Fallingwater Cascades, Fancy Gap, Flat Rock, Folds, Formation, Fox Hunters Paradise, Geology, George Washington National Forest, Gillespie Gap, Glendale Springs, Gneiss, Graggy Dome, Grandfather Mountain, Grandfather Mountain State Park, Granite, Graveyard Fields, Great Valley Overlook, Green Knob, Greenstone Trail, Groundhog Mountain, Hampton Formation, Harpers Formation, Hawksbill Mountain, Hominy Creek, Humpback Mountain, Humpback Rocks Visitor Center, Indian Gap, Irish Gap, James River, James River Visitor Center and Canal, Jefferson National Forest, Julian Price Memorial Park, Jumpinoff Rock, Lake Powhaten, Laurel Springs, Lineville River, Linville, Linville Falls, Linville Falls Visitor Center, Little Switzerland, Looking Glass Rock Overlook, Lynchburg Group, Mabry Hill, Martinsburg Formation, McKinney Gap, Meadows of Dan, Mesoproterozoic gneisses of the Fries Thrust Sheet, Metabasalt, Metagranitoid, Moses H. Cone Memorial Park and Visitor Center, Mount Jefferson State Park, Mount Mitchell, Mount Mitchell State Park, Mount Pisgah, Museum of North Carolina Minerals Visitor Center, N&W Railroad Overlook, Nantahala National Forest, Normal Fault, North Carolina, North Carolina Arboretum, Northwest Trading Post, Oconalufte Visitor Center, Onion Mountain Overlook, Orchard Gap, Oteen, Otter Creek, Overmountain Victory Nation Historic Trail, Peach Bottom Mountain, Peaks of Otter Metagranitoid, Peaks of Otter Visitor Center, Petites Gap, Pilot Gneiss, Pineola, Pipers Gap, Pisgah National Forest, Poor Mountain, Powell Gap, Price Lake, Puckett Cabin, Purgatory Overlook, Rakes Millpond, Ravens Roost, Reverse Fault, Richland Balsam, Roanoke Mountain, Roanoke River, Roanoke River Gorge, Roanoke Valley Overlook, Rocky Knob, Rocky Knob Visitor Center, Sandy Creek Gneiss, Shady Dolomite, Sharp Top, Sherando Lake, Skyland, Southern End, Staunton River, Stone Mountain State Park, Structure, Sugarloaf Mountain, Swannanoa River, Swift Run Formation, Table Rock Mountain, Terrapin Mountain, The Lump, The Saddle, Thrust Fault, Tunnel Gap, Twenty Minute Cliff, Tye River, Tye River Gap, USGS Science Data Catalog (SDC), Unicoi Formation, Virginia, Virginia Explore Park and Visitor Center, Volunteer Gap, Wagon Road Gap, Watauga River, Waterrock Knob Visitor Center, Wayneboro Formation, Waynesboro, Wayneville, Weverton Formation, Whites Gap Overlook, Wigwarm Falls, Woodlaw, Wrights Creek, Yankee Horse Ridge, Z.B. Vance Birthplace, Fewer tags U-series isotope data used to date a 130,000-year-old archaeological site in southern California, U.S.A. This dataset includes tables with physical information and isotopic data that are used to calculate uranium-series ages (230Th/U method) and initial 234U/238U activity ratios on a suite of mastodon bones from the Cerutti Mastodon site near San Diego, CA area. Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Paradise Hills, San Diego, San Diego County, USGS Science Data Catalog (SDC), All tags... archaeology, fossils, geochronology, isotopic analysis, radiometric dating, Fewer tags U.S. Geological Survey - Gap Analysis Project Species Range Maps CONUS_2001 GAP species range data are coarse representations of the total areal extent a species occupies, in other words the geographic limits within which a species can be found (Morrison and Hall 2002). These data provide the geographic extent within which the USGS Gap Analysis Project delineates areas of suitable habitat for terrestrial vertebrate species in their species' habitat maps. The range maps are created by attributing a vector file derived from the 12-digit Hydrologic Unit Dataset (USDA NRCS 2009). Modifications to that dataset are described here. Attribution of the season range for each species was based on the literature and online sources (See Cross Reference section of the metadata). Attribution for each... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Biodiversity and Ecosystems Theme, NDGA, National Geospatial Data Asset, USGS Science Data Catalog (SDC), United States, All tags... biodiversity, biota, conservation, gap analysis, species distribution, wildlife biology, Fewer tags Vertical snowpack CO2 profile measurements from 2010-2016 in a subalpine forest in southern Wyoming Hourly carbon dioxide (CO2) measurements from four locations of snowpack profiles with vertical spacing of 20 cm over seven winters (2010-2016) at the Glacier Lakes Ecosystem Experiments Site (GLEES) in southern Wyoming. All supporting data on snowpack properties (mostly modeled) are included to calculate hourly snowpack CO2 fluxes from raw data. In addition, turbulence from the adjacent AmeriFlux eddy covariance scaffold are included for statistical analyses. For comparison purposes, manual CO2 measurements collected at the site from 1998-1999 and 2004-2010 are also included. In addition to data, all scripts are provided to calculate fluxes and determine statistical effects of year, replicate and turbulence on... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geochemistry, Medicine Bow National Forest, USGS Science Data Catalog (SDC), Volcanology, Wyoming, All tags... carbon dioxide, ecosystem functions, forests, snow density, snow depth, snow energy balance, snowpack average temperature, soil respiration, Fewer tags