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Keigwin, Lloyd D; Bender, Michael L; Kennett, James P (1979): (Table 1) Stable oxygen isotope ratios of benthic foraminifera from Pacific Ocean deep-sea sediments. PANGAEA, https://doi.org/10.1594/PANGAEA.772154, Supplement to: Keigwin, LD et al. (1979): Thermal structure of the deep Pacific Ocean in the early Pliocene. Science, 205(4413), 1386-1388, https://doi.org/10.1126/science.205.4413.1386

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Abstract:
The thermal structure of the Pacific Ocean between water depths of about 1 and 4.5 kilometers is estimated from the oxygen isotopic ratio of benthonic foraminifera from deep-drilled and piston cores of early Pliocene age (about 3 to 5 million years ago). The ratio of oxygen-18 to oxygen-16 in the early Pliocene at each site varies by an average of only ± 0.12 per mil (1 standard deviation). A plot of the oxygen isotopic ratio against modern bottom-water temperature is adequately fit by a line having a slope of - 0.26 per mil per degree Celsius (the equilibrium temperature dependence of calcite-water fractionation), suggesting that the temperature gradient of the Pacific Ocean during the early Pliocene was similar to that of today.
Project(s):
Coverage:
Median Latitude: -12.037430 * Median Longitude: -168.141600 * South-bound Latitude: -40.508000 * West-bound Longitude: 141.938300 * North-bound Latitude: 36.868500 * East-bound Longitude: -82.888200
Date/Time Start: 1969-08-15T00:00:00 * Date/Time End: 1973-09-19T00:00:00
Minimum DEPTH, sediment/rock: 16.90 m * Maximum DEPTH, sediment/rock: 20.60 m
Event(s):
16-158 * Latitude: 6.622700 * Longitude: -85.236000 * Date/Time: 1971-02-18T00:00:00 * Elevation: -1953.0 m * Penetration: 323 m * Recovery: 247.2 m * Location: North Pacific/RIDGE * Campaign: Leg16 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 36 cores; 323 m cored; 0 m drilled; 76.5 % recovery
21-206 * Latitude: -32.012500 * Longitude: 165.452500 * Date/Time: 1971-11-30T00:00:00 * Elevation: -3196.0 m * Penetration: 416 m * Recovery: 243.5 m * Location: South Pacific/Tasman Sea/BASIN * Campaign: Leg21 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 45 cores; 400 m cored; 0 m drilled; 60.9 % recovery
21-207A * Latitude: -36.962500 * Longitude: 165.434300 * Date/Time: 1971-12-12T00:00:00 * Elevation: -1389.0 m * Penetration: 513 m * Recovery: 212.3 m * Location: South Pacific/Tasman Sea/CONT RISE * Campaign: Leg21 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 45 cores; 405 m cored; 45 m drilled; 52.4 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Sample code/labelSample labelKeigwin, Lloyd DODP sample designation
3DEPTH, sediment/rockDepthmGeocode
4Globocassidulina subglobosa, δ18OG. subglobosa δ18O‰ PDBKeigwin, Lloyd D
5Uvigerina sp., δ18OUvigerina sp. δ18O‰ PDBKeigwin, Lloyd D
6Oridorsalis sp., δ18OOrdiorsalis δ18O‰ PDBKeigwin, Lloyd D
Size:
222 data points

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