Physical properties and age model of sediment core SWERUS-L2-29-GC1 from the Lomonosov Ridge, Arctic Ocean

Gabriel West, Matt O'Regan

The dataset contains physical properties, age model, selected palaeo- and rock magnetic data, and X-ray fluorescence (XRF) counts from a sediment core collected from the Lomonosov Ridge off the East Siberian continental margin, Arctic Ocean.

The proposed age model places the base of the core at late marine oxygen isotope stage 6 (~140 ka), and thus helps constrain the timing of ice sheet growth at this part of the Siberian Arctic shelf.

The core was collected during the SWERUS-C3 expedition to the Arctic Ocean with the Swedish icebreaker Oden in 2014.

Citation

Gabriel West, Matt O'Regan (2021) Physical properties and age model of sediment core SWERUS-L2-29-GC1 from the Lomonosov Ridge, Arctic Ocean. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/oden-swerus-2014-sediment-l2-29-gc1-physprop-1

References

West G, Alexanderson H, Jakobsson M, O'Regan M (2021) Optically stimulated luminescence dating supports pre-Eemian age for glacial ice on the Lomonosov Ridge off the East Siberian continental shelf. Quaternary Science Reviews, 267, 107082. https://doi.org/10.1016/j.quascirev.2021.107082

Data description

The dataset is included in one spreadsheet (xlsx) file with four data sheets. Content of the four data sheets:

1. Physical properties of core SWERUS-L2-29-GC1

• Core
• Section number
• Interval (cm)
• Core depth (m)
• Porosity (%vol)
• Bulk density (g/cc)
• Magnetic susceptibility (SI × 10⁻⁵)

2. Age model

• Core
• Core depth (m)
• Mean age (ka)
• Lower age 95.4% (ka)
• Upper age 95.4% (ka)

3. Selected palaeomagnetic and rock magnetic data

• Core
• Core depth (m)
• ChRM inclination (°)
• ChRM declination (°)
• NRM intensity (A/m)
• MAD (°)
• ARM/IRM (-)

4. XRF elemental counts

• Core
• Core depth (m)
• Manganese (counts)
• Zirconium / Rubidium

See article by West G, Alexanderson H, Jakobsson M, O'Regan M (in press) for details about the measurements.

Comments

Details about the core SWERUS-L2-29-GC1: 824 meters water depth, latitude 81.299356° N, longitude 141.78255° E, collection date 14 September 2014.

More information about the SWERUS-C3 expedition is available from the Swedish Polar Research Secretariat. See also SWERUS-C3 program website, managed by the Department of Geological Sciences, Stockholm University.