Wade, Bridget S; Kroon, Dick (2002): Stable oxygen isotope ratios of foraminifera from late middle Eocene sediments of ODP Site 171-1052 from Blake Plateau, West Atlantic Ocean (Appendix) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.678251, Supplement to: Wade, BS; Kroon, D (2002): Middle Eocene regional climate instability: Evidence from the western North Atlantic. Geology, 30(11), 1011-1014, https://doi.org/10.1130/0091-7613(2002)030%3C1011:MERCIE%3E2.0.CO;2
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Abstract:
High-resolution (~3 k.y.) delta18O records from middle Eocene mixed-layer dwelling planktonic foraminifera from the western North Atlantic show pronounced (>1‰) variability. The magnitude of change is greater than that seen in open-ocean Pleistocene records, but could not have been caused by ice-volume and/or sea-level fluctuations. Instead, the oxygen isotope shifts resulted primarily from large oscillations in sea-surface temperatures and indicate that the regional paleoceanography of the middle Eocene western North Atlantic was not consistently warm or stable. The large shifts in sea-surface temperatures could reflect variations in the position of the Gulf Stream relative to Blake Nose or variations in upwelling intensity.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 29.951333 * Longitude: -76.626778
Date/Time Start: 1997-01-30T00:00:00 * Date/Time End: 1997-01-30T00:00:00
Minimum DEPTH, sediment/rock: 72.75 m * Maximum DEPTH, sediment/rock: 128.15 m
Event(s):
171-1052 * Latitude: 29.951333 * Longitude: -76.626778 * Date/Time: 1997-01-30T00:00:00 * Elevation: -1343.8 m * Penetration: 1145.3 m * Recovery: 771.6 m * Location: Blake Nose, North Atlantic Ocean * Campaign: Leg171B * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 111 cores; 1005.1 m cored; 140 m drilled; 76.8% recovery
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2744 data points
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