Kroon, Dick; Austin, William EN; Chapman, Mark R; Ganssen, Gerald M (1997): (Table 1) Age determination of sediment core 56-10-36 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.868691, Supplement to: Kroon, D et al. (1997): Deglacial surface circulation changes in the northeastern Atlantic: Temperature and salinity records off NW Scotland on a century scale. Paleoceanography, 12(6), 755-763, https://doi.org/10.1029/97PA02289
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Abstract:
Sea surface temperature and salinity estimates reconstructed from a core collected on the Barra Fan, northwest Scotland (56°43'N, 09°19'W; water depth 1320 m), show a series of rapid oscillations during the last deglacial period that are very similar to those observed in the d18O records from Greenland ice cores. These records indicate that the transport of heat and salt toward the Nordic Seas was highest during the Bølling period. This ?superconveyor? weakened after the Bølling, probably as a consequence of increased meltwater flux reducing the oceanic salt content, as suggested by the Barbados sea-level record. Evidence for a phase of ice rafting during the Allerød is presented for the first time from this latitude in the northeast Atlantic. The Younger Dryas stadial, resolved here at a century/decadal scale, is characterized by very rapid oscillations in temperature and salinity, indicating that warm, relatively saline waters repeatedly displaced cool polar waters at this latitude. These observations attest to the inherent instability of the deglacial climate system.
Coverage:
Latitude: 56.717000 * Longitude: -9.267000
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 4.600 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Kroon, Dick | Geocode | |
| 2 | Laboratory code/label | Lab label | Kroon, Dick | |||
| 3 | Age, dated material | Dated material | Kroon, Dick | |||
| 4 | Age, dated | Age dated | ka | Kroon, Dick | Age, 14C AMS | |
| 5 | Age, dated standard deviation | Age dated std dev | ± | Kroon, Dick | Age, 14C AMS | 1 sigma |
| 6 | Foraminifera, planktic δ13C | Foram plankt δ13C | ‰ PDB | Kroon, Dick | Mass spectrometer VG Prism | ± 0.1 per mil, monospecific samples of N. pachyderma s and G. bulloides, size fraction 250-350 µm |
| 7 | Age model | Age model | ka | Kroon, Dick | tie point GISP2 or AMS T ka ash | |
| 8 | Calendar age | Cal age | ka BP | Kroon, Dick | Age, 14C calibrated | |
| 9 | Age, comment | Comm | Kroon, Dick |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
39 data points
Data
| 1 Depth sed [m] | 2 Lab label | 3 Dated material | 4 Age dated [ka] | 5 Age dated std dev [±] | 6 Foram plankt δ13C [‰ PDB] | 7 Age model [ka] | 8 Cal age [ka BP] | 9 Comm |
|---|---|---|---|---|---|---|---|---|
| 4.315 | AA13898 | G.bulloides | 13.020 | 0.115 | 1.1 | |||
| 3.550 | AA13900 | G.bulloides | 12.055 | 0.100 | -0.9 | |||
| 0.755 | AA13899 | N.pachyderma (sinistral.) | 10.585 | 0.085 | ||||
| 0.725 | AA13902 | G.bulloides | 10.040 | 0.080 | -0.6 | |||
| 4.600 | 14.800 | 14.90 | ||||||
| 4.230 | 14.550 | 14.66 | ||||||
| 3.830 | 14.000 | 14.04 | ||||||
| 3.560 | 13.400 | 13.62 | ||||||
| 3.310 | 12.900 | 13.31 | ||||||
| 0.755 | 11.380 | 11.06 | ||||||
| 0.005 | 0.000 | 0.00 | ||||||
| 2.780 | 11.293 | 12.67 | 1 Thol. 2 | |||||
| 1.245 | 10.939 | 11.98 | Vedde |