Anderson, Thomas F (1973): (Table 1) Oxygen and carbon isotope compositions of altered carbonates from DSDP Hole 6-53 from the western Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.762492, Supplement to: Anderson, TF (1973): Oxygen and carbon isotope compositions of altered carbonates from the western Pacific, Core 53.0, Deep Sea Drilling Project. Marine Geology, 15(3), 169-180, https://doi.org/10.1016/0025-3227(73)90064-9
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Abstract:
In the lower part of DSDP core 53.0, partly recrystallized carbonate sediments and well recrystallized limestone breccias of Oligo-Miocene age are associated with altered volcanic flows, lithified tuffs, and tuff breccias, suggesting that carbonate alteration was the result of thermal metamorphism. However, the oxygen isotope compositions of these carbonates (-3.4 to +0.6 per mil rel. PDB) are not compatible with recrystallization and isotope exchange with sea water at high temperatures. Evaluating the effects of the composition of the water which exchanged with the carbonates and of carbonate-water isotope exchange in closed systems yields the following approximate maximum temperature of recrystallization: limestone breccias, 100°C; calcite veins rimming breccia clasts, 30°C; and unconsolidated sediments overlying the breccias, 20°C. Therefore, the volcanics at site 53.0 must have been emplaced into the primary carbonate sediments at relatively low temperatures. Subsequent carbonate alteration was probably a consequence of chemical changes in ambient pore waters resulting from the submarine weathering of volcanic material.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 18.033300 * Longitude: 141.191700
Date/Time Start: 1969-07-13T00:00:00 * Date/Time End: 1969-07-13T00:00:00
Minimum Elevation: -4629.0 m * Maximum Elevation: -4629.0 m
Event(s):
6-53 * Latitude: 18.033300 * Longitude: 141.191700 * Date/Time: 1969-07-13T00:00:00 * Elevation: -4629.0 m * Penetration: 200.6 m * Recovery: 12.2 m * Location: North Pacific/Philippine Sea/RIDGE * Campaign: Leg6 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 9 cores; 53.9 m cored; 0 m drilled; 22.6 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Anderson, Thomas F | DSDP/ODP/IODP sample designation | ||
| 2 | Description | Description | Anderson, Thomas F | |||
| 3 | δ18O | δ18O | ‰ | Anderson, Thomas F | Mass spectrometry | with respect to PDB |
| 4 | δ13C | δ13C | ‰ PDB | Anderson, Thomas F | Mass spectrometry | with respect to PDB |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
99 data points