Stieg, Amelie; Weiner, Mikaela; Marent, Andreas; Biskaborn, Boris K; Herzschuh, Ulrike; Baisheva, Izabella; Pestryakova, Luidmila A; Meyer, Hanno: Decadal diatom oxygen isotope record of the Mid-Holocene (6140-6347 cal BP) of the sediment core segment EN20001_6 from Lake Khamra, Yakutia, Siberia [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.973010 (dataset in review)
Abstract:
The dataset compiles diatom oxygen isotope data of 22 samples from the sediment core segment EN20001_6, Lake Khamra. The record has a decadal resolution and spans approximately 210 years (6140-6347 cal BP) within the Mid-Holocene. Contamination assessment, conducted on purified lake sediment samples, was performed by Energy-Dispersive X-ray Spectroscopy (EDS) measurements, carried out by a JEOL M-IT500HR analytical scanning electron microscope (SEM) with an integrated EDS-system supplied with a Peltier-element-cooled detector (SDD) at AWI Potsdam. The standardless procedure was used according to Chapligin et al. (2012), performing six repetitions with an acceleration voltage of 20.0 kV, magnification of 300 and a measuring time of 30 seconds. All detectable elements are given as oxides, with weight percentages (in %) and summed up to the total sum (total %) of each sample. The diatom oxygen isotope data was generated in the ISOLAB Facility at AWI Potsdam with a semi-automated laserfluorination line (Chapligin et al., 2010) in combination with a SERCON HS2022 mass spectrometer. All δ18Odiatom values are given in per mill (‰) vs. Vienna Standard Mean Ocean Water (VSMOW). The dataset includes the mean of measured δ18Odiatom values (Diatom δ18O mean), its standard deviation (Diatom δ18O std dev) and number of replicates (Repl), as well as the calculated contamination (Contamination in %) and the δ18Odiatom corrected for contamination (Diatom δ18O corr). Details of the contamination correction and isotope analytics are given in Stieg et al. (in process).
Keyword(s):
Related to:
Baisheva, Izabella; Biskaborn, Boris K; Stoof-Leichsenring, Kathleen Rosmarie; Andreev, Andrei A; Heim, Birgit; Meucci, Stefano; Ushnitskaya, Lena A; Zakharov, Evgenii S; Dietze, Elisabeth; Glückler, Ramesh; Pestryakova, Luidmila A; Herzschuh, Ulrike (2024): Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data. Frontiers in Earth Science, 12, 1354284, https://doi.org/10.3389/feart.2024.1354284
Baisheva, Izabella; Biskaborn, Boris K; Stoof-Leichsenring, Kathleen Rosmarie; Andreev, Andrei A; Meucci, Stefano; Lu, Yang; Heim, Birgit; Kahl, Jan; Ushnitskaya, Lena A; Davydova, Paraskovya V; Zakharov, Evgenii S; Pestryakova, Luidmila A; Dietze, Elisabeth; Herzschuh, Ulrike (2024): Biogeochemical and palynological data from Lake Khamra, SW Yakutia [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.963238
Chapligin, Bernhard; Meyer, Hanno; Bryan, A; Snyder, Jeffrey A; Kemnitz, Helga (2012): Assessment of purification and contamination correction methods for analysing the oxygen isotope composition from biogenic silica. Chemical Geology, 300-301, 185-199, https://doi.org/10.1016/j.chemgeo.2012.01.004
Chapligin, Bernhard; Meyer, Hanno; Friedrichsen, H; Marent, A; Sohns, E; Hubberten, Hans-Wolfgang (2010): A high‐performance, safer and semi‐automated approach for the δ 18 O analysis of diatom silica and new methods for removing exchangeable oxygen. Rapid Communications in Mass Spectrometry, 24(17), 2655-2664, https://doi.org/10.1002/rcm.4689
Additional metadata:
SENSOR: Metadata for mass spectrometer Sercon 20-22 mass spectrometer at current Version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, hdl:10013/sensor.4880f572-3c55-4e3e-a2e7-485d9bfa06b2
Further details:
SENSOR: Metadata for laboratory ISOLAB Facility - Stable Isotope Laboratory Potsdam at current Version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, hdl:10013/sensor.ddc92f54-4c63-492d-81c7-696260694001
Project(s):
Coverage:
Latitude: 59.990950 * Longitude: 112.983450
Date/Time Start: 2020-03-10T00:00:00 * Date/Time End: 2020-03-14T00:00:00
Minimum DEPTH, sediment/rock: 6.93 m * Maximum DEPTH, sediment/rock: 7.14 m
Event(s):
EN20001_PC (EN20001, Lake Khamra) * Latitude: 59.990950 * Longitude: 112.983450 * Date/Time Start: 2020-03-10T00:00:00 * Date/Time End: 2020-03-14T00:00:00 * Elevation: 340.0 m * Recovery: 10.8 m * Location: Lake Khamra, SW Yakutia, Russia * Campaign: RU-Land_2020_Khamra (Khamra 2020) * Basis: AWI Arctic Land Expedition * Method/Device: Piston corer, UWITEC (PCUWI) * Comment: Tripod piston coring system, UWITEC (HGCUWI); Core length: 10.8 m. Core diameter: 6cm
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Stieg, Amelie | Segment of core EN20001_PC; segment range: 0-89 cm; working half; 0-22 cm (composite depth: 6.93-7.14 m) was subsampled gapless in 1 cm increments, in total 22 subamples | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Stieg, Amelie | Geocode | |
| 3 | Age, dated | Age dated | ka BP | Stieg, Amelie | ||
| 4 | Aluminium oxide | Al2O3 | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 5 | Silicon dioxide | SiO2 | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 6 | Sodium oxide | Na2O | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 7 | Magnesium oxide | MgO | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 8 | Potassium oxide | K2O | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 9 | Calcium oxide | CaO | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 10 | Iron oxide, FeO | FeO | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 11 | Total | Total | % | Stieg, Amelie | ||
| 12 | Diatoms, δ18O | Diatoms δ18O | ‰ SMOW | Stieg, Amelie | Isotope-ratio mass spectrometry (IRMS), Sercon, HS2022 | |
| 13 | Diatoms, δ18O, standard deviation | Diatoms δ18O std dev | ± | Stieg, Amelie | ||
| 14 | Replicates | Repl | # | Stieg, Amelie | ||
| 15 | Contamination | Contamination | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 16 | Diatoms, δ18O, corrected | Diatoms δ18O corr | ‰ SMOW | Stieg, Amelie |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
326 data points