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 [dataset]. 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):
Deep Sea Drilling Project (DSDP)
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):
7-62A * Latitude: 1.870000 * Longitude: 141.938300 * Date/Time: 1969-08-15T00:00:00 * Elevation: -2607.0 m * Penetration: 364 m * Recovery: 303.3 m * Location: North Pacific/RIDGE * Campaign: Leg7 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 38 cores; 337 m cored; 0 m drilled; 90 % recovery
9-84 * Latitude: 5.748700 * Longitude: -82.888200 * Date/Time: 1970-01-23T00:00:00 * Elevation: -3096.0 m * Penetration: 253.9 m * Recovery: 213.3 m * Location: North Pacific * Campaign: Leg9 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 30 cores; 253.8 m cored; 0 m drilled; 84 % recovery
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
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Keigwin, Lloyd D | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 4 | Globocassidulina subglobosa, δ18O | G. subglobosa δ18O | ‰ PDB | Keigwin, Lloyd D | ||
| 5 | Uvigerina sp., δ18O | Uvigerina sp. δ18O | ‰ PDB | Keigwin, Lloyd D | ||
| 6 | Oridorsalis sp., δ18O | Ordiorsalis δ18O | ‰ PDB | Keigwin, Lloyd D |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
222 data points