Sea-ice biomarkers, benthic and planktonic foraminiferal abundance, and total organic carbon in Holocene sediments from outer Petermann Fjord, Greenland ...

• Main Authors: Detlef, Henrieka, Reilly, Brendan T, Jennings, Anne E, Mørk Jensen, Mads, O'Regan, Matt, Glasius, Marianne, Olsen, Jesper, Jakobsson, Martin, Pearce, Christof
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Arctic; Biomarkers; Foraminiferal abundance; IP25; Nares Strait; Sea ice; DEPTH, sediment/rock; AGE; 2,6,10,14-Tetramethyl-7-3-methylpent-4-enylpentadecane per unit sediment mass; 2,6,10,14-Tetramethyl-7-3-methylpent-4-enylpentadecane, flux per year; 2,10,14-Trimethyl-6-enyl-7-3-methylpent-1-enylpentadecene per unit sediment mass; 2,10,14-Trimethyl-6-enyl-7-3-methylpent-1-enylpentadecene, flux per year; 24-Methylcholesta-5,22E-dien-3beta-ol per unit sediment mass; 24-Methylcholesta-5,22E-dien-3beta-ol, flux per year; 24-Methylcholest-5-en-3beta-ol per unit sediment mass; 24-Methylcholest-5-en-3beta-ol, flux per year; Cholesta-5-en-3beta-ol per unit sediment mass; Cholesta-5-en-3beta-ol, flux per year; 24-Ethylcholest-5-en-3beta-ol per unit sediment mass; 24-Ethylcholest-5-en-3beta-ol, flux per year; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol per unit sediment mass; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, flux per year; Marine index; Carbon, organic, total; Carbon, organic, total, flux per year; δ13C, organic carbon; Foraminifera, benthic; Foraminifera, benthic, flux per year; Foraminifera, planktic; Foraminifera, planktic, flux per year; Piston corer; Trigger corer; Gravity corer; Gas chromatography - Mass spectrometry GC-MS; Calculated; Element analyser isotope ratio mass spectrometer EA-IRMS; Counting >63 µm fraction; OD1507; Oden; Greenland; Hall Basin; Nares; Petermann Fjord; Foraminifera*; Nares strait
• Online Access: https://dx.doi.org/10.1594/pangaea.929918; https://doi.pangaea.de/10.1594/PANGAEA.929918

Composite sediment core OD1507-03TC-41GC-03PC was collected at an average water depth of 976 m in outer Petermann Fjord during The Petermann 2015 Expedition to Petermann Fjord and adjacent Hall Basin in Nares Strait, northern Greenland. Previous results showed that the splice covers large parts of the Holocene, from the present to 6,900 cal yrs BP (Reilly et al. 2019). The core was sampled approximately every 5 cm for sea-ice related biomarker and total organic carbon (TOC) analyses and approximately every 10 cm for foraminiferal abundance counts. Where enough material was available, the depth of foraminiferal samples match the depth of biomarker samples. Sea-ice related biomarkers (IP25, HBI II, Brassicasterol, Cholesterol, Dinosterol, Campesterol, and β-sitosterol) where extracted using saponification (5% potassium hydroxide (KOH) in methanol (MeOH):H2O (9:1, v/v); 70°C, 1 h) followed by extraction of the non-saponifiable lipids into hexane (3 x 2 mL). After sample purification the different biomarkers ...