Down-core geochemical data from Disko 2 lake sediment core (West Greenland) collected in April 2013 ...

• Main Authors: Stevenson, Mark A, McGowan, Suzanne, Pearson, Emma J, Swann, George E A, Leng, Melanie J, Jones, Vivienne J, Bailey, Joseph J, Huang, Xianyu, Whiteford, Erika
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Arctic; carbon isotope analysis; Disko Island; Greenland; Lake sediment; Organic Geochemistry; DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Dry mass per area; Lead-210; Lead-210, error; Lead-210, supported; Lead-210, supported, error; Lead-210, unsupported; Lead-210, unsupported, error; Lead-210, unsupported, cumulative; Lead-210, unsupported, cumulative, error; Caesium-137; Caesium-137, error; Americium-241; Americium-241, error; Age; Age, standard error; Accumulation rate per year; Sedimentation rate per year; Sedimentation rate, error; Accumulation rate, dry mass; Accumulation rate, carbon, per year; Carbon, organic, total; δ13C, organic carbon; Carbon/Nitrogen ratio; beta-Carotene, per unit mass total organic carbon; Carbon Preference Index 2, n-Alkanes C23+C25+C27 +C25+C27+C29/2*C24+C26+C28; Terrigenous/aquatic ratio; Index of waxy n-alkanes to total hydrocarbons C27+C29+C31/C23+C25+C29+C31; n-alkane C27/sum n-alkanes; Carbon Preference Index, n-Alkanoic acids; n-Alkanoic acid C30/sum n-Alkanoic acid ratio; n-Alkanol C16/sum n-Alkanols; n-Alkanol C24/sum n-Alkanols; 24-Methylcholesta-5,22E-dien-3beta-ol/sum sterols; n-Alkanoic acid C280, δ13C; HON-Kajak sediment corer; Calculated; Reverse Coaxial Radiation Detector, ORTEC, HPGe GWL; CRS model Constant Rate of Supply; Element analyser CHN ECS4010, Costech coupled to a VG Triple Trap and a VG Optima dual-inlet mass spectrometer MS; High performance liquid chromatography HPLC, Agilent 1200; Calculation according to Marzi et al. 1993; Appleby
• Online Access: https://dx.doi.org/10.1594/pangaea.927276; https://doi.pangaea.de/10.1594/PANGAEA.927276

Lake sediment samples were taken in April 2013 from the ice by drilling through lake ice and recovering an undisturbed core using a HON-Kajak sediment corer. Samples were analysed for pigments (University of Nottingham), carbon isotopes and C/N ratios (BGS, Keyworth), lipid biomarkers (Newcastle University) and compound-specific carbon isotopes (CUG, Wuhan). The purpose of the analyses was to develop an environmental reconstruction of carbon cycling for an upland lake (named Disko 2) to encompass the Little Ice Age to recent warming climate periods. Analyses were completed as part of Mark A. Stevenson's PhD research while based at the University of Nottingham, UK (Stevenson, 2017, http://eprints.nottingham.ac.uk/46579).²¹⁰Pb, ²²⁶Ra, ¹³⁷Cs and ²⁴¹Am concentrations were measured by direct gamma assay in the Environmental Radiometric Facility at University College London (Dr Handong Yang), using an ORTEC HPGe GWL series well-type coaxial low background intrinsic germanium detector. Radiometric dating techniques ... : ± errors derived from counting statisitcs. The absolute efficiencies of the detector were determined using calibrated sources and sediment samples of known activity. See Appleby et al, 1986 (doi:10.1007/0-306-47669-X), Appleby et al, 1992 (doi:10.1016/0168-583X(92)95328-O) and Appleby, 2001 (doi:10.1007/BF00026640). ...