McKenzie, Judith A; Bernoulli, Daniel; Schlanger, Seymour O (1980): (Table 1) Stabile isotopes at DSDP Leg 55 Holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.823263, Supplement to: McKenzie, JA et al. (1980): Shallow-water carbonate sediments from the Emperor seamounts: Their diagenesis and paleogeographic significance. In: Jackson, ED; Koisumi, I; et al., (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 55, 415-455, https://doi.org/10.2973/dsdp.proc.55.115.1980
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Deep sea drilling on four seamounts in the Emperor Seamount chain revealed that Paleogene shallow-water carbonate sediments of the "bryozoan-algal" facies crown the basalt edifices. According to the biofacies model of Schlanger and Konishi (1966, 1975), this bryozoan- algal assemblage suggests that the seamounts formed in cooler, more northerly waters than those presently occupied by the island of Hawaii; i.e., the paleolatitudes of formation were greater than 20 °N. Moving southward toward the youngest member of the seamount chain, a facies gradient indicative of warmer waters was observed. This gradient is interpreted as a reflection of a northward shift in isotherms during the time span in which the seamounts were progressively formed (Savin et al., 1975). On all seamounts, sedimentation at the drilling sites occurred in a high-energy environment with water depths of approximately 20 meters. Early-stage carbonate diagenesis began in the phreatic zone in the presence of meteoric water, but proceeded after subsidence of the seamounts into intermediate sea waters, where the bulk, stable isotopic composition was determined. The subsidence into intermediate waters was rapid, and permitted establishment of an isotopic equilibrium which, like the facies gradient, reflects the northward shift in isotherms during the Paleogene. Calcite and zeolite cements comprise the later-stage diagenesis, and originated from solutions arising from the hydrolysis of the underlying basalt.
In conclusion, the results of this study of the shallow-water carbonate sediments are not inconsistent with a paleolatitude of formation for Suiko Seamount (Site 433) of 26.9 ±3.5 °N, as determined by paleomagnetic measurements (Kono, 1980).
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 41.438083 * Median Longitude: 170.530250 * South-bound Latitude: 34.982300 * West-bound Longitude: 170.020500 * North-bound Latitude: 44.777200 * East-bound Longitude: 172.149700
Date/Time Start: 1973-09-16T00:00:00 * Date/Time End: 1977-08-16T00:00:00
Minimum Elevation: -1874.0 m * Maximum Elevation: -1310.0 m
Event(s):
32-308 * Latitude: 34.982300 * Longitude: 172.149700 * Date/Time: 1973-09-16T00:00:00 * Elevation: -1331.0 m * Penetration: 68.5 m * Recovery: 6.5 m * Location: North Pacific/GUYOT * Campaign: Leg32 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 30.5 m cored; 0 m drilled; 21.3 % recovery
55-430 * Latitude: 37.981300 * Longitude: 170.590800 * Date/Time: 1977-08-01T00:00:00 * Elevation: -1445.0 m * Penetration: 14 m * Recovery: 7.7 m * Location: North Pacific/SEDIMENT POND * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 2 cores; 11.5 m cored; 2.5 m drilled; 67 % recovery
55-432A * Latitude: 41.333800 * Longitude: 170.379000 * Date/Time: 1977-08-06T00:00:00 * Elevation: -1310.0 m * Penetration: 74 m * Recovery: 16.1 m * Location: North Pacific/TERRACE * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 5 cores; 38 m cored; 0 m drilled; 42.4 % 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 | Elevation of event | Elevation | m | |||
| 5 | Sample code/label | Sample label | McKenzie, Judith A | DSDP/ODP/IODP sample designation | ||
| 6 | δ18O, carbonate | δ18O carb | ‰ PDB | McKenzie, Judith A | Mass spectrometer VG Micromass 903 | |
| 7 | δ13C, carbonate | δ13C carb | ‰ PDB | McKenzie, Judith A | Mass spectrometer VG Micromass 903 | |
| 8 | Description | Description | McKenzie, Judith A |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
140 data points