Monosaccharide anhydrides (MA) records of Lake El'gygytgyn sediments (MIS 5e, 6, 7e, 8,11c, 12c) ...

• Main Authors: Dietze, Elisabeth, Karger, Cornelia, Mangelsdorf, Kai
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: ICDP 5011-1; PG1351; Event label; Marine isotope stage; Sample ID; DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Age, minimum/young; Age, maximum/old; Levoglucosan/mannosan ratio; Levoglucosan/mannosan+galactosan ratio; Levoglucosan per unit sediment mass; Mannosan per unit sediment mass; Galactosan per unit sediment mass; Composite Core; Calculated; Ultra high performance liquid chromatography-high resolution mass spectrometry U-HPLC-HRMS; ICDP_Elgygytgyn-Drilling-Project; RU-Land_1998_Elgygytgyn; Sampling on land; AWI Arctic Land Expedition; Lake Elgygytgyn - Climate History of the Arctic since 3.6 Million Years ELGYGYTGYN; Polar Terrestrial Environmental Systems @ AWI AWI_Envi; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.915603; https://doi.pangaea.de/10.1594/PANGAEA.915603

We freeze-dried and homogenized 44 samples of c. 0.7-1.8 g dry sediment from core PG1351 covering late glacials and interglacials of MIS 8 to MIS 5e, integrating sediment of 1 cm core depth. Temporal resolution of these samples ranges from 140 to 960 years per sample. For the period between 430 and 405 kyrs ago (end of MIS 12 to MIS 11c), 13 samples of 0.5-1.3 g of dry sediment from ICDP core 5011-1 were taken for MA analyses, integrating sediment of 2 cm core depth. Eight of these 13 samples are from the same core depths as were previously analysed for pollen (Melles et al., 2012). Temporal resolution of these samples varies between 200 and 970 years per sample comparable to core PG1351. Across all samples, temporal resolution is 333 ± 273 years per sample, giving centennial- to millennial scale averages.We extracted the polar lipids of all MA samples using a Dionex Accelerated Solvent Extraction system (ASE 350, ThermoFisher Scientific) at 100°C, 103 bar pressure and two extraction cycles (20 min static ...