Jonkers, Lukas (2024): XRD and planktonic foraminifera abundance and isotope data for core LO09-18 spanning MIS3 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971425
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Abstract:
Multiproxy data from core LO09-18 from the Reykjanes Ridge. Calcite content and quartz/plagioclase measured using XRD. The quartz/plagioclase ratio of North Atlantic sediments reflects the varying contribution of continental derived quartz versus that of basaltic plagioclase and can be used as a proxy for the contribution of ice-rafted detritus. Details about the measurements and interpretation can be found in https://doi.org/10.1016/S0025-3227(02)00592-3 and https://doi.org/10.1016/S0012-821X(03)00675-7.
Stable carbon and oxygen isotope ratios were measured on at least three aliquots of seven shells of N. pachyderma >150 µm using a Finnigan MAT 253 coupled to a Kiel IV device. Reproducibility of an external standard (NBS19) amounted to 0.05 ‰ and 0.03 ‰ (1 s.d.) for δ18O and δ13C, respectively.
Foraminiferal census counts of core LO09-18 were performed on the >150 µm fraction. The assemblage data were used to derive summer sea surface temperatures using weighted averaging partial least squared regression (WA-PLS) (https://doi.org/10.1007/BF00028046) and the training set of https://doi.org/10.1016/j.quascirev.2004.07.014. The modern temperature values for 10 m water depth during summer (July, August, September) for the calibration dataset were taken from the World Ocean Atlas version 2 (WOA, 1998).
Two age models are presented. The first is based on radiocarbon ages of Neogloborquadrina pachyderma. The second is a refinement of this age model and is also based on tuning the IRD (quartz/plagioclase) time series to the oxygen isotope time series of NGRIP.
Keyword(s):
Related to:
Jonkers, Lukas; Moros, Matthias; Prins, Maarten Arnoud; Dokken, Trond; Andersson Dahl, Carin; Dijkstra, Noortje; Perner, Kerstin; Brummer, Geert-Jan A (2010): A reconstruction of sea surface warming in the northern North Atlantic during MIS 3 ice-rafting events. Quaternary Science Reviews, 29(15-16), 1791-1800, https://doi.org/10.1016/j.quascirev.2010.03.014
Moros, Matthias; Kuijpers, Antoon; Snowball, Ian; Lassen, Stephan; Bäckström, Denise L; Gingele, Franz; McManus, Jerry F (2002): Were glacial iceberg surges in the North Atlantic triggered by climatic warming? Marine Geology, 192(4), 393-417, https://doi.org/10.1016/S0025-3227(02)00592-3
Moros, Matthias; McManus, Jerry F; Rasmussen, T; Kuijpers, Antoon; Dokken, Trond; Snowball, Ian; Nielsen, Tove; Jansen, Eystein (2004): Quartz content and the quartz-to-plagioclase ratio determined by X-ray diffraction: a proxy for ice rafting in the northern North Atlantic? Earth and Planetary Science Letters, 218(3-4), 389-401, https://doi.org/10.1016/S0012-821X(03)00675-7
Coverage:
Latitude: 58.967333 * Longitude: -30.681667
Date/Time Start: 1993-09-10T00:00:00 * Date/Time End: 1993-09-10T00:00:00
Minimum DEPTH, sediment/rock: 2.995 m * Maximum DEPTH, sediment/rock: 5.545 m
Event(s):
LO09/18-2 * Latitude: 58.967333 * Longitude: -30.681667 * Date/Time: 1993-09-10T00:00:00 * Elevation: -1771.0 m * Recovery: 5.5 m * Campaign: LO09 * Basis: Professor Logachev * Method/Device: Gravity corer (Kiel type) (SL)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Jonkers, Lukas | Geocode | |
| 2 | AGE | Age | ka BP | Jonkers, Lukas | Age, calculated calendar years | Geocode |
| 3 | Calcite | Cal | % | Jonkers, Lukas | X-ray diffraction (XRD) | |
| 4 | Quartz/Plagioclase ratio | Qz/Pl | Jonkers, Lukas | X-ray diffraction (XRD) | ||
| 5 | Neogloboquadrina pachyderma, δ13C | N. pachyderma δ13C | ‰ PDB | Jonkers, Lukas | Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV | |
| 6 | Neogloboquadrina pachyderma, δ18O | N. pachyderma δ18O | ‰ PDB | Jonkers, Lukas | Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV | |
| 7 | Neogloboquadrina pachyderma | N. pachyderma | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 8 | Neogloboquadrina incompta | N. incompta | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 9 | Globigerina bulloides | G. bulloides | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 10 | Globoconella inflata | G. inflata | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 11 | Globigerinita uvula | G. uvula | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 12 | Globigerinita glutinata | G. glutinata | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 13 | Turborotalita quinqueloba sinistral | T. quinqueloba s | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 14 | Turborotalita quinqueloba dextral | T. quinqueloba d | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 15 | Globorotalia scitula | G. scitula | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 16 | Foraminifera, planktic indeterminata | Foram plankt indet | # | Jonkers, Lukas | Counting >150 µm fraction | |
| 17 | Age | Age | ka b2k | Jonkers, Lukas | Age model, ice core correlation | NGRIP age (IRD-tuned) |
| 18 | Sea surface temperature, summer | SST sum | °C | Jonkers, Lukas | Calculated from planktonic foraminifera assemblages using WA-PLS | |
| 19 | Sea surface temperature, summer, standard deviation | SST sum std dev | ± | Jonkers, Lukas | Calculated from planktonic foraminifera assemblages using WA-PLS |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1137 data points