Poore, Richard Z; Dowsett, Harry J; Verardo, Stacey; Quinn, Terrence Michael (2003): (Table 1) AMS 14C dates from sediment cores RC12-10 and GYRE97-6PV-20 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.841542, Supplement to: Poore, RZ et al. (2003): Millennial- to century-scale variability in Gulf of Mexico Holocene climate records. Paleoceanography, 18(2), 1048, https://doi.org/10.1029/2002PA000868
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Proxy records from two piston cores in the Gulf of Mexico (GOM) provide a detailed (50-100 year resolution) record of climate variability over the last 14,000 years. Long-term (millennial-scale) trends and changes are related to the transition from glacial to interglacial conditions and movement of the average position of the Intertropical Convergence Zone (ITCZ) related to orbital forcing. The d18O of the surface-dwelling planktic foraminifer Globigerinoides ruber show negative excursions between 14 and 10.2 ka (radiocarbon years) that reflect influx of meltwater into the western GOM during melting of the Laurentide Ice Sheet. The relative abundance of the planktic foraminifer Globigerinoides sacculifer is related to transport of Caribbean water into the GOM. Maximum transport of Caribbean surface waters and moisture into the GOM associated with a northward migration of the average position of the ITCZ occurs between about 6.5 and 4.5 ka. In addition, abundance variations of G. sacculifer show century-scale variability throughout most of the Holocene. The GOM record is consistent with records from other areas, suggesting that century-scale variability is a pervasive feature of Holocene climate. The frequency of several cycles in the climate records is similar to cycles identified in proxy records of solar variability, indicating that at least some of the century-scale climate variability during the Holocene is due to external (solar) forcing.
Coverage:
Median Latitude: 24.810000 * Median Longitude: -93.725000 * South-bound Latitude: 23.400000 * West-bound Longitude: -95.530000 * North-bound Latitude: 26.220000 * East-bound Longitude: -91.920000
Date/Time Start: 1968-01-20T00:00:00 * Date/Time End: 1968-01-20T00:00:00
Minimum DEPTH, sediment/rock: 0.010 m * Maximum DEPTH, sediment/rock: 2.550 m
Event(s):
GYRE97-6PC-20 * Latitude: 26.220000 * Longitude: -91.920000 * Elevation: -2040.0 m * Location: Gulf of Mexico * Method/Device: Piston corer (PC)
RC12-10 * Latitude: 23.400000 * Longitude: -95.530000 * Date/Time: 1968-01-20T00:00:00 * Elevation: -3054.0 m * Recovery: 10.81 m * Campaign: RC12 * Basis: Robert Conrad * Method/Device: Piston corer (PC)
Comment:
Measuerd on mixed planktonic foraminifera.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Age, dated | Age dated | ka | Poore, Richard Z | Age, 14C AMS | |
| 4 | Age, dated standard deviation | Age dated std dev | ± | Poore, Richard Z | Age, 14C AMS | |
| 5 | Calendar age | Cal age | ka BP | Poore, Richard Z | Age, 14C milieu/reservoir corrected (-400 yr) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
45 data points