Came, Rosemarie E; Oppo, Delia W; McManus, Jerry F (2007): (Table DR1) Accelerator mass spectrometry radiocarbon dates and calendar ages of sediments from ODP Hole 162-984C [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.721799, Supplement to: Came, RE et al. (2007): Amplitude and timing of temperature and salinity variability in the subpolar North Atlantic over the past 10 k.y. Geology, 35(4), 315-318, https://doi.org/10.1130/G23455A.1
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Abstract:
Paired planktic foraminiferal d18O and Mg/Ca data reveal trends of increasing temperatures (~3 °C) and salinities in the subpolar North Atlantic over the course of the Holocene, which were punctuated by abrupt events. The trends likely reflect an insolation-forced northward retreat of the boundary between polar and North Atlantic subsurface waters. The superimposed variability does not appear to be periodic, but tends to recur within a broad millennial band. The records provide convincing evidence of open-ocean cooling (nearly 2°C) and freshening during the 8.2 ka event, and suggest similar conditions at 9.3 ka. However, the two largest temperature oscillations in our record (~2°C) occurred during the past 4 k.y., suggesting a recent increase in temperature variability relative to the mid-Holocene, perhaps in response to neoglaciation, which began at about this time.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 61.425300 * Longitude: -24.082500
Date/Time Start: 1995-07-28T08:20:00 * Date/Time End: 1995-07-29T01:45:00
Minimum DEPTH, sediment/rock: 0.010 m * Maximum DEPTH, sediment/rock: 2.835 m
Event(s):
162-984C * Latitude: 61.425300 * Longitude: -24.082500 * Date/Time Start: 1995-07-28T08:20:00 * Date/Time End: 1995-07-29T01:45:00 * Elevation: -1649.0 m * Penetration: 290.4 m * Recovery: 296 m * Location: South Atlantic Ocean * Campaign: Leg162 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 31 core; 290.4 m cored; 0 m drilled; 101.9 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Depth, top/min | Depth top | m | Came, Rosemarie E | ||
| 3 | Depth, bottom/max | Depth bot | m | Came, Rosemarie E | ||
| 4 | Sample code/label | Sample label | Came, Rosemarie E | DSDP/ODP/IODP sample designation | ||
| 5 | Sample, optional label/labor no | Lab no | Came, Rosemarie E | |||
| 6 | Species | Species | Came, Rosemarie E | |||
| 7 | Age, dated | Age dated | ka | Came, Rosemarie E | Accelerator mass spectrometry (AMS) | |
| 8 | Age, dated standard deviation | Age dated std dev | ± | Came, Rosemarie E | Calculated | |
| 9 | Sigma | Sigma | Came, Rosemarie E | Calculated | 1 or 2 | |
| 10 | Calendar age | Cal age | ka BP | Came, Rosemarie E | Calculated | minimal |
| 11 | Calendar age | Cal age | ka BP | Came, Rosemarie E | Calculated | maximal |
| 12 | Calendar age | Cal age | ka BP | Came, Rosemarie E | Calculated |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
231 data points