Poore, Richard Z; Osterman, Lisa Ellen; Curry, William B; Phillips, R Lawrence (1999): (Table 1) Age determination of Arctic Ocean sediment cores [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.817626, Supplement to: Poore, RZ et al. (1999): Late Pleistocene and Holocene meltwater events in the western Arctic Ocean. Geology, 27(8), 759-762, https://doi.org/10.1130/0091-7613(1999)027%3C0759:LPAHME%3E2.3.CO;2
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Abstract:
Accelerator mass spectrometer 14C dated stable isotope data from Neogloboquadrina pachyerma in cores raised from the Mendeleyev Ridge and slope provide evidence for significant influx of meltwater to the western Arctic Ocean during the early part of marine oxygen isotope stage 1 (OIS 1) and during several intervals within OIS 3. The strongest OIS 3 meltwater event occurred before ca. 45 ka (conventional radiocarbon age) and was probably related to the deglaciation at the beginning of OIS 3. Major meltwater input to the western Arctic Ocean during the last deglaciation coincides closely with the maximum rate of global sea-level rise as determined from the Barbados sea-level record, demonstrating a strong link between the global record and changes in the central Arctic Ocean. OIS 2, which includes the last glacial maximum, is very condensed or absent in the cores. Abundance and d13C values for N. pachyderma in the middle part of OIS 3 are similar to modern values, indicating high productivity and seasonal ice-free areas along the Arctic margin at that time. These records indicate that the Arctic Ocean was a source of heat and moisture to the northern polar atmosphere during parts of OIS 3.
Coverage:
Median Latitude: 81.350223 * Median Longitude: 178.671333 * South-bound Latitude: 80.338830 * West-bound Longitude: 175.758330 * North-bound Latitude: 82.446670 * East-bound Longitude: -178.711830
Minimum DEPTH, sediment/rock: 0.0250 m * Maximum DEPTH, sediment/rock: 0.3450 m
Event(s):
94B16 * Latitude: 80.338830 * Longitude: -178.711830 * Elevation: -1533.0 m * Location: Arctic Ocean * Method/Device: Box corer (BC)
94B17 * Latitude: 81.265170 * Longitude: 178.967500 * Elevation: -2217.0 m * Location: Arctic Ocean * Method/Device: Box corer (BC)
94B19 * Latitude: 82.446670 * Longitude: 175.758330 * Elevation: -2400.0 m * Location: Arctic Ocean * Method/Device: Box corer (BC)
Comment:
Measured on Neogloboquadrina pachyderma, size fraction >125 µm.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Depth, top/min | Depth top | m | Poore, Richard Z | ||
| 4 | Depth, bottom/max | Depth bot | m | Poore, Richard Z | ||
| 5 | Age, dated | Age dated | ka | Poore, Richard Z | Age, 14C milieu/reservoir corrected (-440 yr) | |
| 6 | Age, dated standard deviation | Age dated std dev | ± | Poore, Richard Z | Age, 14C milieu/reservoir corrected (-440 yr) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
124 data points