Hill, Heather W; Flower, Benjamin P; Quinn, Terrence Michael; Hollander, David J; Guilderson, Thomas P (2006): (Table 1) Age determination of sediment core MD02-2551 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.834984, Supplement to: Hill, HW et al. (2006): Laurentide Ice Sheet meltwater and abrupt climate change during the last glaciation. Paleoceanography, 21(1), PA1006, https://doi.org/10.1029/2005PA001186
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Abstract:
A leading hypothesis to explain abrupt climate change during the last glacial cycle calls on fluctuations in the margin of the North American Laurentide Ice Sheet (LIS), which may have routed fresh water between the Gulf of Mexico (GOM) and the North Atlantic, affecting North Atlantic Deep Water variability and regional climate. Paired measurements of d18O and Mg/Ca of foraminiferal calcite from GOM sediments reveal five episodes of LIS meltwater input from 28 to 45 thousand years ago (ka) that do not match the millennial-scale Dansgaard-Oeschger warmings recorded in Greenland ice. We suggest that summer melting of the LIS may occur during Antarctic warming and likely contributed to sea level variability during marine isotope stage 3.
Coverage:
Latitude: 26.946300 * Longitude: -91.345800
Date/Time Start: 2002-07-08T20:39:00 * Date/Time End: 2002-07-08T20:39:00
Minimum DEPTH, sediment/rock: 19.68 m * Maximum DEPTH, sediment/rock: 29.88 m
Event(s):
MD02-2551 (MD022551) * Latitude: 26.946300 * Longitude: -91.345800 * Date/Time: 2002-07-08T20:39:00 * Elevation: -2255.0 m * Recovery: 31.79 m * Location: Orca Basin * Campaign: MD127 (IMAGES IX - PAGE) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Corer (CALYPSO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Laboratory code/label | Lab label | Hill, Heather W | CAMS (Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Age, dated | Age dated | ka | Hill, Heather W | Age, 14C AMS | |
| 4 | Age, dated standard error | Age std e | ± | Hill, Heather W | Age, 14C AMS | |
| 5 | Calendar age | Cal age | ka BP | Hill, Heather W | Age, 14C calibrated | |
| 6 | Age, comment | Comm | Hill, Heather W |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
90 data points