Fine-silt luminescence dating and mineral composition of sediments from the Arctic Ocean ...

New geochronometers are needed for sediments of the Arctic Ocean spanning at least the last half million years, largely because oxygen-isotope stratigraphy is relatively ineffective in this ocean, and because other dating techniques require significant assumptions about sedimentation rates. Multi-al...

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Bibliographic Details
Main Author: Berger, Glenn W
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2007
Subjects:
Box corer
Giant gravity corer
Kasten corer
Gravity corer Kiel type
Giant box corer
Giant piston corer
ARK-IV/3
ARK-VIII/3
Polarstern
Arctic Ocean
Online Access:https://dx.doi.org/10.1594/pangaea.669644
https://doi.pangaea.de/10.1594/PANGAEA.669644
Description
Summary:New geochronometers are needed for sediments of the Arctic Ocean spanning at least the last half million years, largely because oxygen-isotope stratigraphy is relatively ineffective in this ocean, and because other dating techniques require significant assumptions about sedimentation rates. Multi-aliquot luminescence sediment-dating procedures were applied to polymineral, fine-silt samples from 9 core-top and 37 deeper samples from 20 cores representing 19 sites across the Arctic Ocean. Most samples have independent age assignments and other known properties (e.g., % coarse fraction, % carbonate, U-Th isotopes). Thick-source alpha-particle counting indicates that for most regions the contribution of measured unsupported 230Th and 231Pa to calculated dose rates is ... : Supplement to: Berger, Glenn W (2006): Trans-arctic-ocean tests of fine-silt luminescence sediment dating provide a basis for an additional geochronometer for this region. Quaternary Science Reviews, 25(19-20), 2529-2551 ...

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