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Geochemistry Of Background Sediment Samples At Technical Area 39 Los Alamos National Laboratory
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Book Synopsis Geochemistry of Background Sediment Samples at Technical Area 39, Los Alamos National Laboratory by :
Download or read book Geochemistry of Background Sediment Samples at Technical Area 39, Los Alamos National Laboratory written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents results of chemical analyses of 24 analytes in 16 background sediment samples collected from Ancho Canyon and Indio Canyon at Technical Area (TA) 39, Los Alamos National Laboratory. Preliminary upper tolerance limits (UTLS) for sediments are calculated from this data set but, because of the small sample size, these UTLs exceed the maximum values in the data set by up to 50'ZO and will require revision as more background sediment data are obtained.
Book Synopsis Geochemistry of Sediment Samples at TA-54, Los Alamos National Laboratory by :
Download or read book Geochemistry of Sediment Samples at TA-54, Los Alamos National Laboratory written by and published by . This book was released on 1999 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: A statistical evaluation of sediment data from Technical Area 54, Los Alamos National Laboratory, was used to examine the relation of concentrations of a series of inorganic and radionuclide analytes to general geographic setting and sediment texture. Significant differences exist between results from the north and south sides of Mesita del Buey, with analyte concentrations being generally higher to the north. These differences probably result primarily from variations in background levels in the source materials for the sediments, perhaps reflecting finer particle sizes and/or better developed soils on the north side of the mesa.
Book Synopsis Natural Background Geochemistry and Statistical Analysis of Sediments, Los Alamos National Laboratory by : Eric V. McDonald
Download or read book Natural Background Geochemistry and Statistical Analysis of Sediments, Los Alamos National Laboratory written by Eric V. McDonald and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Natural background concentrations were determined for inorganic and radionuclide constituents of sediments as part of Environmental Restoration Project Canyons investigations at Los Alamos National Laboratory (LANL). Twent-four sediment samples were collected from uncontaminated locations within Los Alamos, Pueblo, and Guaje Canyons. Results from these samples are compared with results of inorganic chemical concentrations from sixteen samples collected from Indio and Ancho Canyons that were analyzed as part of an earlier study of background sediment concentrations"--Abstract.
Book Synopsis Plans and Practices for Groundwater Protection at the Los Alamos National Laboratory by : National Research Council
Download or read book Plans and Practices for Groundwater Protection at the Los Alamos National Laboratory written by National Research Council and published by National Academies Press. This book was released on 2006-11-21 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discharges of wastes from activities associated with the federal government's Los Alamos site in northern New Mexico began during the Manhattan Project in 1943. Now designated the Los Alamos National Laboratory (LANL), the site is operated under contract by the Department of Energy (DOE). Through past and ongoing investigations, radioactive and chemical contaminants have been detected in parts of the complex system of groundwater beneath the site. Since effective protection of groundwater is important for LANL's continuing operations, DOE's Office of Environmental Management requested technical advice and recommendations regarding several aspects of LANL's groundwater protection program. This interim report summarizes the committee's information-gathering activities and identifies issues within the scope of its task that have risen to the committee's attention without offering any findings or recommendations. The final report is expected to be released in May 2007 and it is the hope that results of the final study will provide guidance and impetus for dialogue and agreement among DOE, LANL, and other stakeholders on a focused, cost-effective program for protecting the groundwater in and around the site.
Book Synopsis Geology and Geochemistry of Samples from Los Angeles National Laboratory HDR Well EE-2, Fenton Hill, New Mexico by : R. Laney
Download or read book Geology and Geochemistry of Samples from Los Angeles National Laboratory HDR Well EE-2, Fenton Hill, New Mexico written by R. Laney and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Los Alamos Scientific Laboratory Approach to Hydrogeochemical and Stream Sediment Reconnaissance for Uranium in the United States by :
Download or read book Los Alamos Scientific Laboratory Approach to Hydrogeochemical and Stream Sediment Reconnaissance for Uranium in the United States written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Los Alamos Scientific Laboratory of the United States is conducting a geochemical survey for uranium in the Rocky Mountain states of New Mexico, Colorado, Wyoming, and Montana and in Alaska. This survey is part of a national hydrogeochemical and stream sediment reconnaissance in which four Department of Energy laboratories will study the uranium resources of the United States to provide data for the National Uranium Resource Evaluation program. The reconnaissance will identify areas having higher than background concentrations of uranium in ground waters, surface waters, and water-transported sediments. Water and sediment samples are collected at a nominal density of one sample location per 10 km2 except for lake areas of Alaska where the density is one sample location per 23 km2. Water samples are analyzed for uranium by fluorometry which has a 0.02 parts per billion lower limit of detection. Concentrations of 12 additional elements in water are determined by plasma-source emission spectrography. All sediments are analyzed for uranium by delayed-neutron counting with a 20 parts per billion lower limit of detection, which is well below the range of uranium concentrations in natural sediment samples. Elemental concentrations in sediments are also determined by neutron activation analysis for 31 elements by x-ray fluorescence for 9 elements, and by arc-source emission spectrography for 2 elements. The multielement analyses provide valuable data for studies concerning pathfinder elements, environmental pollution, elemental distributions, dispersion halos, and economic ore deposits other than uranium. To date, all of four Rocky Mountain states and about 80% of Alaska have been sampled. About 220,000 samples have been collected from an area of nearly 2,500,000 km2.
Download or read book Exploration Geochemistry written by and published by . This book was released on 1989 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Los Alamos National Laboratory became actively involved in geochemical exploration in 1975 by conducting a reconnaissance-scale exploration program for uranium as part of the National Uranium Resource Evaluation program. Initially, only uranium and thorium were analyzed. By 1979 Los Alamos was analyzing a multielement suite. The data were presented in histograms and as black and white concentration plots for uranium and thorium only. Data for the remaining elements were presented as hard copy data listings in an appendix to the report. In 1983 Los Alamos began using exploration geochemistry for the purpose of finding economic mineral deposits to help stimulate the economies of underdeveloped countries. Stream-sediment samples were collected on the Caribbean island of St. Lucia and a geochemical atlas of that island was produced. The data were statistically smoothed and presented as computer-generated color plots of each element of the multielement suite. Studies for the US Bureau of Land Management in 1984 consisted of development of techniques for the integration of several large data sets, which could then be used for computer-assisted mineral resource assessments. A supervised classification technique was developed which compares the attributes of grid cells containing mines or mineral occurrences with attributes of unclassified cells not known to contain mines or occurrences. Color maps indicate how closely unclassified cells match in attributes the cells with mines or occurrences. 20 refs., 1 fig., 1 tab.
Book Synopsis Geology and Geochemistry of Samples from Los Alamos National Laboratory HDR Well EE-2, Fenton Hill, New Mexico by :
Download or read book Geology and Geochemistry of Samples from Los Alamos National Laboratory HDR Well EE-2, Fenton Hill, New Mexico written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Petrologic, geochemical, and structural analyses of cores and cuttings obtained from 3000 to 4389-m true vertical depth in drill hole EE-2 indicate that this deeper part of the Precambrian section at Fenton Hill, New Mexico is composed primarily of a very heterogeneous and structurally anisotropic metamorphic complex, locally intruded by dikes and sills of granodioritic and monzogranitic composition. In this borehole none of these igneous bodies approach in size the 335-m-thick biotite-granodiorite body encountered at 2591-m depth beneath Fenton Hill in the other two drill holes. Contacts between the igneous and metamorphic rocks range from sharp and discordant to gradational. Analysis of cuttings indicates that clay-rich alteration zones are relatively common in the openhole portion of EE-2. These zones average about 20 m in thickness. Fracture sets in the Precambrian basement rock intersected by the EE-2 well bore mostly trend northeast and are steeply dipping to vertical; however, one of the sets dips gently to the northwest. Slickensided fault planes are present in a core (No. 5) taken from a true vertical depth of 4195 m. Available core orientation data and geologic inference suggest that the faults dip steeply and trend between N.42° and 59°E.
Book Synopsis Geology and Geochemistry of Samples from Los Alamos National Laboratory HDR Well EE-2, Fenton Hill, New Mexico by : R. Laney
Download or read book Geology and Geochemistry of Samples from Los Alamos National Laboratory HDR Well EE-2, Fenton Hill, New Mexico written by R. Laney and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Petrologic, geochemical, and structural analyses of cores and cuttings obtained from 3000 to 4389-m true vertical depth in drill hole EE-2 indicate that this deeper part of the Precambrian section at Fenton Hill, New Mexico is composed primarily of a very heterogeneous and structurally anisotropic metamorphic complex, locally intruded by dikes and sills of granodioritic and monzogranitic composition. In this borehole none of these igneous bodies approach in size the 335-m-thick biotite-granodiorite body encountered at 2591-m depth beneath Fenton Hill in the other two drill holes. Contacts between the igneous and metamorphic rocks range from sharp and discordant to gradational. Analysis of cuttings indicates that clay-rich alteration zones are relatively common in the openhole portion of EE-2. These zones average about 20 m in thickness. Fracture sets in the Precambrian basement rock intersected by the EE-2 well bore mostly trend northeast and are steeply dipping to vertical; however, one of the sets dips gently to the northwest. Slickensided fault planes are present in a core (No. 5) taken from a true vertical depth of 4195 m. Available core orientation data and geologic inference suggest that the faults dip steeply and trend between N.42° and 59°E.
Book Synopsis Field Conference by : New Mexico Geological Society
Download or read book Field Conference written by New Mexico Geological Society and published by . This book was released on 1996 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Background Radioactivity in River and Reservoir Sediments Near Los Alamos, New Mexico by :
Download or read book Background Radioactivity in River and Reservoir Sediments Near Los Alamos, New Mexico written by and published by . This book was released on 2002 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of its continuing Environmental Surveillance Program, regional river and lake-bottom sediments have been collected annually by Los Alamos National Laboratory (the Laboratory) since 1974 and 1979, respectively. These background samples are collected from three drainage basins at ten different river stations and five reservoirs located throughout northern New Mexico and southern Colorado. Radiochemical analyses for these sediments include tritium, strontium-90, cesium-137, total uranium, plutonium-238, plutonium-239,-240, americium-241, gross alpha, gross beta, and gross gamma radioactivity. Detection-limit radioactivity originates as worldwide fallout from aboveground nuclear weapons testing and satellite reentry into Earth's atmosphere. Spatial and temporal variations in individual analyte levels originate from atmospheric point-source introductions and natural rate differences in airborne deposition and soil erosion. Background radioactivity values on sediments reflect this variability, and grouped river and reservoir sediment samples show a range of statistical distributions that appear to be analyte dependent. Traditionally, both river and reservoir analyte data were blended together to establish background levels. In this report, however, we group background sediment data according to two criteria. These include sediment source (either river or reservoir sediments) and station location relative to the Laboratory (either upstream or downstream). These grouped data are statistically evaluated through 1997, and background radioactivity values are established for individual analytes in upstream river and reservoir sediments. This information may be used to establish the existence and areal extent of trace-level environmental contamination resulting from historical Laboratory research activities since the early 1940s.
Book Synopsis Site Geology and Hydrology of Technical Area 16, Area P by : Fred Brown
Download or read book Site Geology and Hydrology of Technical Area 16, Area P written by Fred Brown and published by . This book was released on 1988 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis The Jemez Mountains Region by : New Mexico Geological Society. Field Conference
Download or read book The Jemez Mountains Region written by New Mexico Geological Society. Field Conference and published by . This book was released on 1996 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Office of Environmental Management Technical Reports by :
Download or read book The Office of Environmental Management Technical Reports written by and published by . This book was released on 1997 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Global Geochemical Database for Environmental and Resource Management by : IGCP Project 259
Download or read book A Global Geochemical Database for Environmental and Resource Management written by IGCP Project 259 and published by . This book was released on 1995 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book stems from the multi-stage International Geochemical Mapping (IGM), an International Geological Correlation Programme (IGCP) project, to set up a global geochemical database on the distribution and quantities present of all 92 chemical elements in the surface of the earth. A comprehensive review and evaluation of methods for regional and national geochemical mapping and providing a recognized, global quantitative base on which local investigations can be built for particular environmental and economic problems concerning various aspects of land use.
Book Synopsis Mars Science Laboratory by : John Grotzinger
Download or read book Mars Science Laboratory written by John Grotzinger and published by Springer. This book was released on 2012-12-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mars Science Laboratory is the latest and most advanced NASA roving vehicle to explore the surface of Mars. The Curiosity rover has landed in Gale crater and will explore this region assessing conditions on the surface that might be hospitable to life and paving the way for later even more sophisticated exploration of the surface. This book describes the mission, its exploration and scientific objectives, studies leading to the design of the mission and the instruments that accomplish the objectives of the mission. This book is aimed at all those engaged in Martian studies as well as those interested in the origin of life in other environments. It will be a valuable reference for anyone who uses data from the Mars Science Laboratory. Previously published in Space Science Reviews journal, Vol. 170/1-4, 2012.
