Moros, Matthias; Endler, Rudolf; Lackschewitz, Klas Sven; Wallrabe-Adams, Hans-Joachim; Mienert, Jürgen; Lemke, Wolfram (1997): (Table 2) Age determination of sediment cores LO09/21-2 and SO82_4-2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.868816, Supplement to: Moros, M et al. (1997): Physical properties of Reykjanes Ridge sediments and their linkage to high-resolution Greenland Ice Sheet Project 2 ice core data. Paleoceanography, 12(5), 687-695, https://doi.org/10.1029/97PA02030
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Abstract:
Five gravity cores taken from the Reykjanes Ridge have been used to establish a link between sediment physical properties and atmospheric records documented by d18O variations in Greenland ice cores over the last 45,000 calendar years. Marine Gamma Ray Attenuation Porosity Evaluator density and magnetic susceptibility variations could be linked with the ice core Dansgaard-Oeschger and Bond cycles. This is supported by ice-rafted detritus (IRD), grain size, the quartz/feldspar ratio, and carbonate, isotopic, and foraminiferal records. The covariation of the sediment physical properties and d18O in Greenland ice indicates a coupling of atmospheric temperature and paleocirculation variations. Gradual reduced bottom currents (Iceland-Scotland Overflow Water) and enhanced iceberg discharges have been reconstructed for cold atmospheric periods relative to interstadial times. In the study area the magnetic susceptibility signal is not related to the ice-rafted detritus input but most probably reflects the variations of the Iceland-Scotland Overflow Water intensity transporting titanomagnetite into the Reykjanes Ridge region.
Further details:
Bard, Edouard; Arnold, Maurice; Fairbanks, Richard G; Hamelin, Bruno (1993): Thorium-230/uranium-234 and carbon-14 ages obtained by mass spectrometry on corals. Radiocarbon, 35(1), 191-199, https://doi.org/10.1017/S0033822200013886
Coverage:
Median Latitude: 59.018917 * Median Longitude: -30.615917 * South-bound Latitude: 58.942000 * West-bound Longitude: -30.753167 * North-bound Latitude: 59.095833 * East-bound Longitude: -30.478667
Date/Time Start: 1992-10-20T00:00:00 * Date/Time End: 1993-09-11T00:00:00
Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 4.50 m
Event(s):
LO09/21-2 * Latitude: 58.942000 * Longitude: -30.753167 * Date/Time: 1993-09-11T00:00:00 * Elevation: -1437.0 m * Recovery: 5.68 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 | Event label | Event | Moros, Matthias | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Moros, Matthias | Geocode | |
| 3 | Age, dated material | Dated material | Moros, Matthias | |||
| 4 | Age, dated | Age dated | ka | Moros, Matthias | Age, 14C AMS | |
| 5 | Age, dated standard deviation | Age dated std dev | ± | Moros, Matthias | Age, 14C AMS | |
| 6 | Calendar age | Cal age | ka BP | Moros, Matthias | Age, 14C calibrated | |
| 7 | Age, comment | Comm | Moros, Matthias | |||
| 8 | Laboratory code/label | Lab label | Moros, Matthias |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
84 data points
Data
| 1 Event | 2 Depth sed [m] | 3 Dated material | 4 Age dated [ka] | 5 Age dated std dev [±] | 6 Cal age [ka BP] | 7 Comm | 8 Lab label |
|---|---|---|---|---|---|---|---|
| LO09/21-2 | 1.70 | Neogloboquadrina pachyderma s. | 16.02 | 0.19 | 19.025 | Calender years = 1.24 * (14C age) - 840 [Bard et al., 1993] | AAR-1935 |
| LO09/21-2 | 2.40 | Neogloboquadrina pachyderma s. | 19.59 | 0.17 | 23.178 | Calender years = -5.85 * 10**-6 (14C age) + 1.39 * (14C age) - 1807 [E. Bard, pers. com.] | AAR-1936 |
| LO09/21-2 | 3.80 | Neogloboquadrina pachyderma s. | 27.50 | 0.42 | 31.994 | Calender years = -5.85 * 10**-6 (14C age) + 1.39 * (14C age) - 1807 [E. Bard, pers. com.] | AAR-1804 |
| LO09/21-2 | 4.50 | Neogloboquadrina pachyderma s. | 31.75 | 0.48 | 36.428 | Calender years = -5.85 * 10**-6 (14C age) + 1.39 * (14C age) - 1807 [E. Bard, pers. com.] | AAR-1937 |
| SO82_4-2 | 0.01 | Globigerina bulloides | 5.84 | 0.07 | 6.402 | Calender years = 1.24 * (14C age) - 840 [Bard et al., 1993] | AAR-1559 |
| SO82_4-2 | 0.93 | Globigerina bulloides | 10.46 | 0.09 | 12.130 | Calender years = 1.24 * (14C age) - 840 [Bard et al., 1993] | AAR-1894 |
| SO82_4-2 | 1.01 | Neogloboquadrina pachyderma s. | 11.32 | 0.14 | 13.197 | Calender years = 1.24 * (14C age) - 840 [Bard et al., 1993] | AAR-1680 |
| SO82_4-2 | 1.31 | Neogloboquadrina pachyderma s. | 13.27 | 0.19 | 15.615 | Calender years = 1.24 * (14C age) - 840 [Bard et al., 1993] | AAR-1681 |
| SO82_4-2 | 1.56 | Neogloboquadrina pachyderma s. | 15.90 | 0.15 | 18.876 | Calender years = 1.24 * (14C age) - 840 [Bard et al., 1993] | AAR-1682 |
| SO82_4-2 | 2.16 | Neogloboquadrina pachyderma s. | 18.47 | 0.19 | 21.871 | Calender years = -5.85 * 10**-6 (14C age) + 1.39 * (14C age) - 1807 [E. Bard, pers. com.] | AAR-1683 |
| SO82_4-2 | 2.84 | Neogloboquadrina pachyderma s. | 22.65 | 0.54 | 26.675 | Calender years = -5.85 * 10**-6 (14C age) + 1.39 * (14C age) - 1807 [E. Bard, pers. com.] | AAR-1560 |
| SO82_4-2 | 3.58 | Globigerina bulloides | 27.60 | 0.30 | 32.101 | Calender years = -5.85 * 10**-6 (14C age) + 1.39 * (14C age) - 1807 [E. Bard, pers. com.] | AAR-1895 |
| SO82_4-2 | 4.11 | Neogloboquadrina pachyderma s. | 32.92 | 0.75 | 37.612 | Calender years = -5.85 * 10**-6 (14C age) + 1.39 * (14C age) - 1807 [E. Bard, pers. com.] | AAR-1684 |
| SO82_4-2 | 4.49 | Neogloboquadrina pachyderma s. | 34.15 | 0.62 | 38.839 | Calender years = -5.85 * 10**-6 (14C age) + 1.39 * (14C age) - 1807 [E. Bard, pers. com.] | AAR-1896 |