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

• Main Author: Berger, Glenn W
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 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; Arctic Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.669644; https://doi.pangaea.de/10.1594/PANGAEA.669644

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