The Avaatech XRF core scanner; technical description and applications to NE Atlantic sediments

Author(s): Richter, Thomas O.; van der Gaast, Sjerry; Koster, Bob; Vaars, Aad; Gieles, Rineke; de Stigter, Henko C.; de Haas, Henk; van Weering, Tjeerd C. E.
Author Affiliation(s): Primary:
Royal Netherlands Institute for Sea Research, Department of Marine Chemistry and Geology, Den Burg, Netherlands
Other:
Avaatech Analytical X-Ray Technology, Netherlands
Volume Title: New techniques in sediment core analysis
Volume Author(s): Rothwell, R. Guy, editor
Source: New techniques in sediment core analysis, edited by R. Guy Rothwell. Geological Society Special Publications, Vol.267, p.39-50. Publisher: Geological Society of London, London, United Kingdom. ISSN: 0305-8719. ISBN: 1-86239-210-2 CODEN: GSLSBW
Note: In English. 28 refs.; illus., incl. 4 tables
Summary: X-ray fluorescence (XRF) core scanning provides rapid high-resolution (down to 1 mm) records of chemical composition on split sediment cores. The measurements are non-destructive and require very limited sample preparation. The new Avaatech XRF Core Scanner, operational since 2002, covers the atomic mass range from Al to U. Instrument parameters, especially tube voltage, can be adjusted to provide optimum settings for selected elements or sets thereof. Owing to the nature of the surface of split sediment cores, particularly effects resulting from sample inhomogeneity and surface roughness, results are semiquantitative, yet provide reliable records of the relative variability in elemental composition downcore. Selected case studies from diverse sedimentary settings in the NE Atlantic Ocean illustrate a range of applications of XRF logging data. These include preliminary stratigraphic interpretations (glacial-interglacial cycles), provenance studies of the terrigenous sediment fraction, lithological characterization, early diagenetic processes and distinction between carbonate phases (aragonite v. calcite).
Year of Publication: 2006
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 20 Geophysics, Applied; Aragonite; Atlantic Ocean; Carbonates; Chemical composition; Cores; Geochemistry; High-resolution methods; Instruments; Leg 162; Marine sediments; Mineral composition; North Atlantic; Northeast Atlantic; Ocean Drilling Program; Petroleum; Petroleum exploration; Sample preparation; Sediments; Spectra; Techniques; Well-logging; X-ray fluorescence spectra
Coordinates: N552838 N772026 W0062700 W0240457
Record ID: 2007038737
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.