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  • 1
    Keywords: Sedimentology. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (668 pages)
    Edition: 1st ed.
    ISBN: 9789401798495
    Series Statement: Developments in Paleoenvironmental Research Series ; v.17
    DDC: 551.60901
    Language: English
    Note: Intro -- Foreword -- Acknowledgements -- Contents -- Contributors -- About the Editors -- Explanation of Abbreviations and Acronyms -- Chapter-1 -- Micro-XRF Studies of Sediment Cores: A Perspective on Capability and Application in the Environmental Sciences -- Introduction -- The Development of XRF Core Scanners-A Boon to the Environmental Sciences -- The Core Scanner Community -- Scope of the Volume -- Marine Sediment Applications -- Lacustrine, Fluvial and Terrestrial Applications -- Environmental Geochemistry and Forensics Applications -- Core Scanner Technology Optimisation -- References -- Part I -- Marine Studies -- Chapter-2 -- Twenty Years of XRF Core Scanning Marine Sediments: What Do Geochemical Proxies Tell Us? -- Introduction -- History of XRF Core Scanning of Marine Sediments -- Early Non-chemical Methods of Determining Climate Changes -- Discovery of X-ray Fluorescence -- Early Geochemical Studies of Marine Sediments -- The Development of XRF Core Scanners -- Review of Marine Science Applications -- Core Description and Characterisation -- Studies of Climatically-Driven Cycles in Sediment Deposition that are Reflected in Element (e.g. Ca or Fe) Fluctuations Over Time -- Sedimentological Applications, Where Primary Features or Events May be Recognised by Their Exotic Composition or Localised and/or Organised Bed Characteristics -- Studies of Sediment Provenance Based on Chemical Differences in Source Areas -- Cluster Analysis and Facies Interpretation of Sedimentary Environments -- Studies of Diagenesis and Secondary Modification -- Core Correlation and Orbitally-Tuning High-Resolution Core Log Records -- Environmental Impact Studies -- Methods of Data Analysis -- Factors Affecting Data Quality -- Core Type -- Sample Preparation -- Effects of Sample Heterogeneities -- Response Depth. , Plotting Core-Scanner Data-the Importance of Normalisation and Log-Ratios -- The Geochemical Proxies -- Fe, Ti and Magnetic Susceptibility -- Concluding Remarks -- References -- Chapter-3 -- Optimization of Itrax Core Scanner Measurement Conditions for Sediments from Submarine Mud Volcanoes -- Introduction -- Materials and Methods -- Results and Discussion -- Factors that Influence ITRAXTM Core Scanner Data Acquisition -- Comparison of Al and Si Results Obtained with Cr- and Mo-tubes -- Comparative Study of Core 419G Using Different Exposure Times -- Effects of Aging on Core 419G -- Geochemical Profiles from the Mud Volcano Maya -- Conclusions -- References -- Chapter-4 -- Use of Calibrated ITRAX XRF Data in Determining Turbidite Geochemistry and Provenance in Agadir Basin, Northwest African Passive Margin -- Introduction -- Geological Setting -- Methodology and Data -- Visual and Sedimentological Logging -- ITRAX μXRF Core Scanning -- ICP-OES Analysis -- Grain-Size Analysis -- Results -- Turbidite Geochemistry -- Volcaniclastic Turbidites (Beds A2, A8 and A14) -- Organic-Rich Siliciclastic Turbidites (Beds A1, A3, A5, A7, A11, A12 and A13) -- Calcareous Turbidites (Bed A10) -- Discussion -- Turbidite Correlation -- Turbidite Provenance -- Conclusions -- Appendix 1 -- Appendix 2 -- References -- Chapter-5 -- Identification, Correlation and Origin of Multistage Landslide Events in Volcaniclastic Turbidites in the Moroccan Turbidite System -- Introduction -- Geological Setting -- Methodology and Data -- Visual Sediment Logging -- WD-XRF Analyses -- Itrax μXRF Core Scanning -- Volcanic Glass Geochemistry -- Grain-Size Analysis -- Results -- Visual Logging -- Grain-Size Profiles -- Correlation of Itrax XRF Profiles -- Comparison of Bulk Subunit Compositions Using Calibrated Itrax μXRF Data -- Grain Specific Geochemistry Within Subunits -- Discussion. , Presence and Correlation of Subunits -- Itrax Comparison of Bulk Subunit Heterogeneities -- Variations in Glass (Grain-Scale) Geochemistry -- Implications for Volcanic Island Landslides and Tsunamigenesis -- Conclusions -- Appendix -- References -- Chapter-6 -- An Empirical Assessment of Variable Water Content and Grain-Size on X-Ray Fluorescence Core-Scanning Measurements of Deep Sea Sediments -- Introduction -- Materials and Methods -- Sediment Material -- XRF-Core Scanning -- Conventional WD-XRF -- Grain-Size -- Multi-Sensor Core Logger Data -- Water Content -- Results -- Correlation of Itrax-Scan Data with Conventional WD-XRF -- Correlation of Water Content Adjusted Itrax-Scan Data with Conventional WD-XRF -- Discussion -- Water Effects -- Grain-Size and Surface Roughness -- Conclusions -- References -- Part II -- Lake and River Studies -- Chapter-7 -- Micro-XRF Core Scanning in Palaeolimnology: Recent Developments -- Introduction -- Interpretation of XRF Scanning Data from Lake Sediments -- Influence of Lake Sediment Composition on Element Detection and Interpretation -- Catchment Erosion Proxies -- Proxies for In-Lake Processes -- Sediment Characterisation -- Applications of µXRF Scanning -- Flood Histories -- Identifying the Location of Tephra Layers -- Varved Sequences -- Climate Variability Inferred from µXRF Scanning of Lake Sediments -- Long Records of Climate Change -- Last Glacial-Interglacial Transition and Holocene -- Records of Human Activity -- Summary and Conclusions -- References -- Chapter-8 -- Micro-XRF Applications in Fluvial Sedimentary Environments of Britain and Ireland: Progress and Prospects -- Introduction -- Attributes and Potential of Fluvial Sediment Archives for Micro-XRF Analysis -- Attributes -- Potential -- Materials and Methods -- Case Studies -- Flood Reconstruction Using Itrax XRF Profiles -- Introduction. , Geochemical Grain Size Proxies: Zr/Rb and Zr/Ti -- The Upper Severn Catchment -- Sediment Grain-Sizes and Geochemistry -- Flood Record Derived from Micro-XRF Analysis -- Contaminant Profiling and Provenance Using Itrax XRF -- Introduction -- The Tidally Influenced Lower Dyfi -- Geochemical Profiles -- Sediment Provenance -- Itrax Inferred Patterns of Sand Floodplain Development -- Introduction -- Floodplain of the Lower Boyne Valley, Ireland -- Floodplain Composition -- Role of XRF Data for Floodplain Partitioning -- Discussion: Progress and Prospects -- Progress -- Prospects -- Conclusion -- References -- Chapter-9 -- Estimation of Biogenic Silica Concentrations Using Scanning XRF: Insights from Studies of Lake Malawi Sediments -- Introduction -- Methods -- Discussion -- Summary and Conclusions -- References -- Chapter-10 -- Optimization of Itrax Core Scanner Protocols for the Micro X-Ray Fluorescence Analysis of Finely Laminated Sediment: A Case Study of Lacustrine Varved Sediment from the High Arctic -- Introduction -- Analytical Attributes -- Spatial Resolution: Optical and Radiographic Image Acquisition -- Time Acquisition: Micro X-Ray Fluorescence Analysis -- Effects of Concentration and Detectability of Chemical Elements on the Reproducibility of μ-XRF Analyses -- Visual Estimation of Reproducibility -- Statistical Estimation of Reproducibility -- Effects of Sample Topographical Irregularities on μ-XRF Results at High Resolution -- Methodological Synthesis for Maximizing Data Robustness of the Itrax Core Scanner for Analysis of Thin Laminations -- Case Study: High-Resolution µ-XRF Analysis for Estimation of Grain-Size Variability and Varve Counts in Fine Clastic Varved Sediment from Cape Bounty Lake, Canadian High Arctic -- Estimation of Grain-Size Variability: Development of Paleohydrological Indicators. , Recommendations and Steps to Estimate Grain Size from µ-XRF Data for use as Paleohydrological Indica -- Estimate of Varve Counts -- Future Direction: Development of Climate Proxies -- Summary -- References -- Chapter-11 -- Investigating the Use of Scanning X-Ray Fluorescence to Locate Cryptotephra in Minerogenic Lacustrine Sediment: Experimental Results -- Introduction -- Methods -- Experimental Design -- Application: Sverigedalsvatn Core SVP-207 -- Results -- Background Elemental Variations -- Synthetic Cores Spiked with Rhyolitic Tephra (R1 and R2) -- Synthetic Cores Spiked with Basaltic Tephra (B1 and B2) -- Sverigedalsvatn Core SVP-207 -- Discussion -- Elemental Signal of Tephra in Synthetic Cores -- Elemental Signal of Tephra in Sverigedalsvatn Core SVP-207 -- Application and Limitations of Scanning XRF to Locate Cryptotephra in Sediment Profiles -- Conclusions -- References -- Chapter-12 -- Combined µ-XRF and Microfacies Techniques for Lake Sediment Analyses -- Introduction -- Study Site and Sediments -- Materials and Methods -- Sample Collection and Preparation -- Micro X-ray Fluorescence (µ-XRF) Spectrometry -- Inductively Coupled-Plasma Mass Spectrometry (ICP-MS) -- Results -- Repeatability of the µ-XRF Measurements -- Scanner Resolution -- Sediment Microfacies in µ-XRF Data -- Intra-lamina Variability -- Varve Counting in µ-XRF Records -- µ-XRF and ICP-MS Comparison -- Discussion -- Conclusions -- References -- Chapter-13 -- Experiences with XRF-Scanning of Long Sediment Records -- Introduction -- Site Characterization -- Laguna Potrok Aike -- Lake El'gygytgyn -- Material -- Sediment Cores -- Lithology -- Methods -- Results and Discussion -- Laguna Potrok Aike -- Lake El'gygytgyn -- Conclusions -- References -- Chapter-14. , Approaches to Water Content Correction and Calibration for µXRF Core Scanning: Comparing X-ray Scattering with Simple Regression of Elemental Concentrations.
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  • 2
    Keywords: Geography ; Earth Sciences ; Sedimentology ; Biotechnology ; Environmental engineering. ; Geotechnical engineering. ; Röntgenfluoreszenzspektroskopie ; Bohrkern ; Paläoklimatologie ; Paläoklima ; Sediment ; Methode ; Bohrkernuntersuchung ; Röntgenfluoreszenzspektroskopie ; Geochemie ; Sedimentologie ; Sedimentpetrographie ; Warve ; Röntgenfluoreszenzspektroskopie ; Bohrkern ; Paläoklimatologie ; Paläoklima ; Sediment ; Methode ; Bohrkernuntersuchung ; Röntgenfluoreszenzspektroskopie ; Geochemie ; Sedimentologie ; Sedimentpetrographie ; Warve
    Description / Table of Contents: This volume presents papers on the use of micro-XRF core scanners in palaeoenvironmental research. It contains a broad ranging view of instrument capability and points to future developments that will help contribute to higher precision elemental data and faster core analysis. Readers will find a diverse range of research by leading experts that have used micro-XRF core scanners in a wide range of scientific applications. The book includes specific application papers reporting on the use of XRF core scanners in a variety of marine, lacustrine, and pollution studies. In addition, coverage also examines practical aspects of core scanner usage, data optimisation, and data calibration and interpretation. In a little over a decade, micro-XRF sediment core scanners have made a substantive contribution to palaeoenvironmental research. Their impact is based on their ability to rapidly, non-destructively, and automatically scan sediment cores. Not only do they rapidly provide important proxy data without damaging samples, but they can obtain environmental data at decadal, annual, and even sub-annual scales. This volume will help both experienced and new users of these non-destructive core scanners take full advantage of one of the most powerful geochemical screening tools in the environmental scientist's toolbox
    Type of Medium: Online Resource
    Pages: Online-Ressource (XXIX, 656 p. 239 illus., 152 illus. in color, online resource)
    ISBN: 9789401798495
    Series Statement: Developments in Paleoenvironmental Research 17
    RVK:
    Language: English
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  • 3
    Keywords: Aufsatzsammlung ; Sediment ; Bohrkern ; Röntgenfluoreszenzspektroskopie
    Type of Medium: Book
    Pages: XXIX, 656 S. , Ill., graph. Darst., Kt.
    ISBN: 9789401798488
    Series Statement: Developments in paleoenvironmental research 17
    RVK:
    Language: English
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Environmental science & technology 29 (1995), S. 1288-1296 
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Environmental science & technology 29 (1995), S. 1288-1296 
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 6 (1982), S. 0 
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The concentrations of 26 elements have been investigated in seven BCS certified reference samples using three varieties of neutron activation analysis. The ANRT granite GS-N was used as the comparator reference material while the USGS basalt BHVO-1 and the GIT-IWG basalt BE-N were analysed concurrently to assess the analytical accuracy.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 5 (1981), S. 0 
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Instrumental and radiochemical neutron activation analysis, using chromatographic group separations prior to neutron irradiation, were used to determine eight rare earths and twelve other trace elements in the two British Chemical Standards feldspars BCS 375 (Soda) and BCS 376 (Potash).
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 17 (1993), S. 0 
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The fluorine content in twenty-nine reference samples of geological interest has been determined using a well tried and tested method which has been previously reported. The analytical method uses fast neutron activation involving the reaction 19F(n,a)16N and gamma spectrometry. Interferences have been found to be negligible for the experimental conditions used. The method involves minimal sample preparation, is rapid and can easily measure concentrations down to 5 parts per million in a 5 g sample.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Rare earth data for nine well-known geochemical reference samples were obtained using a rapid and efficient cation exchange chromatographic separation procedure. It involves the use of a mixed-acid eluent (HCI and HNO3) on a 15 x 1 cm column of Bio-Rad AG50–X8 (200–400 mesh) to remove matrix and many trace elements from rock solutions. The rare earth elements are removed from the column using 60 ml 7M HNO3. The pre-concentration procedure described is routinely used in this laboratory for the determination of the rare earth elements by mass spectrometry-isotope dilution, and has been satisfactorily used for their determination using inductively-coupled plasma-source atomic emission spectrometry.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 13 (1989), S. 0 
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The fluorine concentration in seventy-one reference samples of geological interest has been determined using fast-neutron activation analysis. The reaction involved [19F(n, α) 16N] uses accelerator-derived neutrons produced by bombarding a Be target with 3 MeV deuterons. The gamma radiation associated with the decay of 16N (t1/2 = 7.13 s) is counted and for the irradiation conditions used there are no serious interferences. The advantages of this technique over other schemes of fluorine determination are its simple procedure for sample preparation, speed, high sensitivity and non-destructiveness. A comparison of the data obtained with those in the literature is highly favourable.
    Type of Medium: Electronic Resource
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