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Spielhagen, Robert F; Mackensen, Andreas (2021): Radiocarbon datings from sediment core PS93/031-5 (NW Fram Strait). PANGAEA, https://doi.org/10.1594/PANGAEA.930416, In: Spielhagen, RF; Mackensen, A (2021): Coarse fraction, radiocarbon datings, and planktic stable isotope data from sediment core PS93/031-5 (NW Fram Strait). PANGAEA, https://doi.org/10.1594/PANGAEA.930425

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Abstract:
Sediment core PS93/031-5 was obtained during RV POLARSTERN expedition PS93.1 in the northwestern Fram Strait on the Northeast Greenland continental margin from 2,135 m water depth.
Sediment slices of approx. 5 mm thickness were taken from sediment core PS93/031-5 every 0.5 cm (~30 g dry sediment per sample). Sediments were freeze-dried, weighed, and washed with deionized water through a 63 µm mesh. The remaining coarse fraction was dried at 50°C.
Radiocarbon datings were performed on 9 samples of sediment core PS93/031-5 at the AMS-14C facility of the Leibniz Laboratory for Age Determination and Isotope Research of Kiel University from August 2018 to April 2019 on ~2,000 specimens of N. pachyderma (morphotype 1-2) per sample (identification following the morphotype concept of Eynaud, 2011).
According to the radiocarbon datings (no reservoir correction applied) the sediment core covers the Late Quaternary time interval from 4,023 to 18,135 years before present (1950 CE). No sediments are present from the interval 11,170-15,950 years before present (hiatus at 25 cm core depth). When a conversion to calibrated years is performed with the program Calib 8.2 (http://calib.org/calib/), using the IntCal20 data set and applying a reservoir correction of 550 years, the core covers the interval of 3,750-23,230 years before present, with the hiatus covering the interval 12,660-18,550 years.
Keyword(s):
coarse fraction; Fram Strait; isotopes; Neogloboquadrina pachyderma; Quaternary
Related to:
Eynaud, Frédérique (2011): Planktonic foraminifera in the Arctic: a paleoceanographic view. IOP Conference Series: Earth and Environmental Science, 14, 1-12, https://doi.org/10.1088/1755-1315/14/1/012005
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03G0833C: System Laptev-Sea: Transdrift
Federal Ministry of Education and Research (BMBF), grant/award no. 03G0833D: System Laptev-Sea: Transdrift / Laptev-Sea Transdrift
German Science Foundation (DFG), grant/award no. DFG SP 526/5-1: Environmental and Climate History Off NorthEast Greenland
Coverage:
Latitude: 79.349500 * Longitude: -3.523830
Date/Time Start: 2015-07-09T16:50:00 * Date/Time End: 2015-07-09T16:50:00
Minimum DEPTH, sediment/rock: 0.0025 m * Maximum DEPTH, sediment/rock: 0.3725 m
Event(s):
PS93/031-5 * Latitude: 79.349500 * Longitude: -3.523830 * Date/Time: 2015-07-09T16:50:00 * Elevation: -2134.5 m * Location: North Greenland Sea * Campaign: PS93.1 (ARK-XXIX/2.1) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, sediment/rockDepthmSpielhagen, Robert FGeocode
2Depth, top/minDepth topmSpielhagen, Robert F
3Depth, bottom/maxDepth botmSpielhagen, Robert F
4Age, dated materialDated materialSpielhagen, Robert F
5Age, datedAge datedkaSpielhagen, Robert FAge, 14C AMSno reservoir correction
6Age, datedAge datedkaSpielhagen, Robert FAge, 14C milieu/reservoir corrected (-550 yr)
7Age, dated standard deviationAge dated std dev±Spielhagen, Robert FAge, 14C AMS
8Laboratory code/labelLab labelSpielhagen, Robert F
9Calendar ageCal ageka BPSpielhagen, Robert FAge, 14C calibrated, CALIB 8.2 and IntCal20median
10Calendar age, minimum/youngCal age minka BPSpielhagen, Robert Fcalculated, 2 sigma
11Calendar age, maximum/oldCal age maxka BPSpielhagen, Robert Fcalculated, 2 sigma
12Reservoir effect/correctionRes effectaSpielhagen, Robert F
Size:
99 data points

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