Elemental ratios from sediment core MD01-2444 on the Portuguese Margin, Marine Isotope Stage 3 ...

• Main Authors: Tzedakis, Polychronis C, Margari, Vasiliki, Skinner, Luke C, Menviel, Laurie, Capron, Emilie, Rhodes, Rachael H, Mleneck-Vautravers, Maryline J, Ezat, Mohamed M, Martrat, Belén, Grimalt, Joan O, Hodell, David A
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Heinrich Stadials; Interstadials; MIS 3; Portuguese Margin; DEPTH, sediment/rock; Age model; Zirconium/Strontium ratio; Calcium/Titanium ratio; Calypso Corer; Age model, GICC05; Age model, WD2014; X-ray fluorescence core scanner XRF, Avaatech; MD123; Marion Dufresne 1995; Greenland; ice core; NGRIP
• Online Access: https://dx.doi.org/10.1594/pangaea.919844; https://doi.pangaea.de/10.1594/PANGAEA.919844

XRF Analysis: Archive halves of sections from Core MD01-2444 were analysed using an Avaatech XRF core scanner at the University of Cambridge. The core surface was carefully scraped cleaned and covered with a 4-mm thin SPEXCertiPrep Ultralene foil to avoid contamination and minimize desiccation. Each section was measured using a current of 0.2mA at three different voltages: 10 kV, 30 kV using a thin lead filter, and 50 kV using a copper filter. XRF data were collected every 2.5 mm. The length and width of the irradiated surface was 2.5 and 12 mm, respectively, with a count time of 40s. The record was generated by D.A. Hodell and S. Crowhurst. Age model: The age model was developed by aligning the abrupt transitions of d18O record of G. bulloides in core MD01-2444 to warming and cooling events in the NGRIP d18Oice record, presented on: (i) the GICC05 timescale [Svensson, A. et al. A 60,000 year Greenland stratigraphic ice core chronology. Clim. Past 4, 47–57 (2008)]; and (ii) the WD2014: modified timescale, ...