230Th excess, U isotopes, elemental data together with microfossil data and their stable isotopes ...

• Main Authors: Geibert, Walter, Matthiessen, Jens, Stimac, Ingrid, Wollenburg, Jutta Erika, Stein, Ruediger
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2020
• Subjects: 230Th excess; Arctic Ocean; freshwater; Arctic; Foraminifera*; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.914629; https://doi.pangaea.de/10.1594/PANGAEA.914629

This dataset comprises previously published and new data on the composition of sediment cores from the Arctic Ocean. New data are supplied for cores PS51/038-4, PS72/396-5 and PS72/396-3: For PS51/038-4 and PS72/396-5, we provide data on 230Th excess, 238U, 234U/238U together with bulk Ca, Mn and S concentrations. For PS72/396-3, we provide data on planktonic foraminifera, their oxygen and carbon isotopic composition, allochtonous forminifera fractions and the abundance of Cibicides lobatulus subsp. grossa. Thorium and uranium isotopes were measured on a sector-field ICP-MS (Element2) via isotope dilution; elemental concentrations on an ICP-OES iCAP; foraminfera abundances after freeze-drying and sieving of a mean sample size of 87 g; and stable isotopes on a Finnigan MAT 251 isotope ratio gas mass spectrometer directly coupled to a Kiel I automatic carbonate preparation device; all at the Alfred Wegener Institute. 230Thex was calculated by subtracting the activity of 234U from 230Th.Existing data comprise ...