Douglas, Robert G; Savin, Samuel M (1978): Stable carbon and oxygen isotope composition of Recent, Tertiary and Cretaceous foraminifera (Table III) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.688694, Supplement to: Douglas, RG; Savin, SM (1978): Oxygen isotopic evidence for the depth stratification of Tertiary and Cretaceous planktic foraminifera. Marine Micropaleontology, 3(2), 175-196, https://doi.org/10.1016/0377-8398(78)90004-X
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Abstract:
Oxygen isotope analyses of Tertiary and Cretaceous planktic foraminifera indicate that species have been stratified with respect to depth in the water column at least since Albian time. There is a relationship between morphology and depth habitat. Species with globigerine morphology have consistently occupied shallower depths than have species with globorotalid morphology. Biserially arranged species occupied both shallow and deep levels in the water column. On the average, it appears that ancient species with shallow habitats have been more susceptible to dissolution and have been preserved less well than species dwelling in deeper habitats. This relationship is similar to that observed for Recent planktic foraminifera. Comparison of carbon isotope ratios of adult and juvenile forms indicates that either the source of the carbon found in the shell or the carbon isotopic fractionations which occur during calcite secretion change during the development of individual foraminifera. The carbon isotopic ratios do not provide a reliable means for reconstructing the depth habitats of ancient species. Temperature-depth profiles for tropical Tertiary oceans have been reconstructed from the isotopic temperatures of planktic and benthic foraminifera. The vertical thermal structure of Oligocene oceans resembled that of modern oceans most closely. Those of Paleocene and Maastrichtian times differed most from that of modern oceans.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 16.407215 * Median Longitude: -150.165469 * South-bound Latitude: -28.033300 * West-bound Longitude: 141.938300 * North-bound Latitude: 32.448300 * East-bound Longitude: -56.480000
Date/Time Start: 1963-01-12T00:00:00 * Date/Time End: 1973-09-03T00:00:00
Minimum ORDINAL NUMBER: 1 * Maximum ORDINAL NUMBER: 125
Event(s):
6-47B * Latitude: 32.448300 * Longitude: 157.711700 * Date/Time: 1969-06-28T00:00:00 * Elevation: -2689.0 m * Penetration: 129.2 m * Recovery: 101.1 m * Location: North Pacific/PLATEAU * Campaign: Leg6 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 14 cores; 120.1 m cored; 0 m drilled; 84.2 % recovery
6-48B * Latitude: 32.408300 * Longitude: 158.021700 * Date/Time: 1969-06-30T00:00:00 * Elevation: -2619.0 m * Penetration: 72.9 m * Recovery: 210.7 m * Location: North Pacific/PLATEAU * Campaign: Leg6 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 3 cores; 21 m cored; 0 m drilled; 98.6 % recovery
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
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | ORDINAL NUMBER | Ord No | Geocode | |||
| 5 | Sample code/label | Sample label | Douglas, Robert G | DSDP/ODP/IODP sample designation | ||
| 6 | Epoch | Epoch | Douglas, Robert G | |||
| 7 | Biozone | Biozone | Douglas, Robert G | |||
| 8 | Age model | Age model | ka | Douglas, Robert G | ||
| 9 | Species | Species | Douglas, Robert G | planktic foraminifer unless otherwise noted | ||
| 10 | Foraminifera, planktic δ18O | Foram plankt δ18O | ‰ PDB | Douglas, Robert G | ||
| 11 | Foraminifera, planktic δ13C | Foram plankt δ13C | ‰ PDB | Douglas, Robert G | ||
| 12 | Foraminifera, benthic δ18O | Foram benth δ18O | ‰ PDB | Douglas, Robert G | ||
| 13 | Foraminifera, benthic δ13C | Foram benth δ13C | ‰ PDB | Douglas, Robert G | ||
| 14 | δ18O, carbonate | δ18O carb | ‰ PDB | Douglas, Robert G | nannofossil residue | |
| 15 | δ13C, carbonate | δ13C carb | ‰ PDB | Douglas, Robert G | nannofossil residue | |
| 16 | δ18O, standard deviation | δ18O std dev | ± | Douglas, Robert G | ||
| 17 | Temperature, calculated | T cal | °C | Douglas, Robert G | Calculated from stable oxygen isotopes | calculated assuming the following d18O values for waters in which the foraminifera grew: Recent planktic, +0.30per mil ; Recent benthic -0.20?; middle Miocene through Pliocene planktic, 0.00?; middle Miocene through Pliocene benthic, -0.50?; older planktic, -0.50?; older benthic, -1.00? |
| 18 | Temperature, difference | delta T | °C | Douglas, Robert G | is the difference between the isotopic temperature of a species and the warmest isotopic temperature obtained for a species from the same sample | |
| 19 | Comment | Comment | Douglas, Robert G |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1067 data points