Marine sediment core data from the Lomonosov Ridge off Greenland, Arctic Ocean
Matt O'Regan
Sedimentological data from six marine sediment cores collected from the Lomonosov Ridge, Arctic Ocean. The sediment cores were collected on two separate icebreaker led expeditions to the Arctic Ocean in 2012 (LOMROG-12) and 2016 (AO16). The data is used to investigate the occurrence of sub-polar planktic foraminifera on the Lomonosov Ridge north of Greenland during interglacials periods of the last 500 thousand years. The data set includes physical property measurements, geochemical measurements, sediment grain size, and relative abundances of foraminifera.
MarineSediment coresArctic OceanLomonosov RidgePleistoceneChronologyLithostratigraphyPlanktonic foraminiferaTurborotalita quinquelobaBiostratigraphy
Download dataName
Version
Citation
References
O'Regan, M., Coxall, H. K., Cronin, T. M., Gyllencreutz, R., Jakobsson, M., Kaboth, S., Löwemark, L., Wiers, S., and West, G. (2019): Stratigraphic Occurrences of Sub-Polar Planktic Foraminifera in Pleistocene Sediments on the Lomonosov Ridge, Arctic Ocean. Frontiers in Earth Science, 7, 71. https://doi.org/10.3389/feart.2019.00071
Data description
1. Relative foraminifera abundance counts in the >125 μm size fraction, and the occurrence of *Turborotalita quinqueloba* in the 63-125 μm. Relative abundance is defined as: Abundant (≥50% of sample), Common (>100 specimens), Few (50-100 specimens), Rare (< 50 specimens), Barren (0 specimens). Intervals where *T. quinqueloba* occurs are marked by an 'X'. 2. Grain size measurements acquired at a 1-2 cm downcore resolution using a Malvern Mastersizer 3000 laser diffraction particle analyser. Data is averaged from 5 replicate measurements at each sample position. Data includes: % volume of sand, silt and clay, as well as the fine, medium and coarse silt volumes. 3. Physical properties measured using a GeoTek Multi-Sensor Core Logger: Bulk Density (g/cc) and Bartington loop sensor Magnetic Susceptibility (SI × 10⁻⁵). 4. ITRAX XRF scanner data at a 2 mm downcore resolution.
Spreadsheet tabs:
LOMROG12_PC07_Foraminifera; AO16_5PC_Foraminifera; LOMORG12-6PC_Grainsize; LOMORG12-7PC_Grainsize; LOMORG12-12PC_Grainsize; MSCL Data; LOMROG12-3PC_ITRAX_XRF; LOMROG12-6PC_ITRAX_XRF; LOMROG12-7PC_ITRAX_XRF; LOMROG12-12PC_ITRAX_XRF; AO16-12PC_ITRAX_XRF; AO16-5PC_ITRAX_XRF
Comments
The six sediment cores are:<br /> LOMROG12-3PC, 1607 m water depth, 87.7247°N, -54.4253°E;<br /> LOMROG12-6PC, 2923 m water depth, 88.2511°N, -46.3972°E;<br /> LOMROG12-7PC, 2953 m water depth, 88.1976°N, -55.6845°E;<br /> LOMROG12-12PC, 1366 m water depth, 88.1085°N, 134.6451°E;<br /> AO16-5PC, 1253 m water depth, 89.0780°N, -130.5470°E;<br /> AO16-12PC, 1269 m water depth, 87.8577°N, 136.9875°E
Project
Material for this study was collected by the Swedish icebreaker Oden on the Danish-Swedish Lomonosov Ridge off Greenland III in 2012 (LOMROG12), and the Canadian-Swedish Arctic Ocean 2016 expedition (AO16).
Publisher
Bolin Centre Database
First name
Matt
Last name or organisation
O'Regan
Email address
Address
Department of Geological Sciences, Stockholm University
Postal code
SE-106 91
City
Stockholm
Country
Sweden
GCMD science keyword
Earth science > Oceans > Marine sediments
GCMD location
Ocean > Arctic Ocean
Dataset language
English