Beets, Christiaan J (1991): 87Sr/86Sr ratios of middle Miocene to Pleistocene planktonic foraminifers from ODP Site 117-722 (Table 3) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.756854, Supplement to: Beets, CJ (1991): The late Neogene 87Sr/86Sr isotopic record in the western Arabian Sea, Site 722. In: Prell, WL; Niitsuma, N; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 117, 459-463, https://doi.org/10.2973/odp.proc.sr.117.166.1991
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Abstract:
Continuous magnetostratigraphy and biostratigraphy made it possible to construct a detailed late Neogene record of 87Sr/86Sr isotopic ratios of ocean water, as measured in the tests of planktonic foraminifers. Sediments recovered during Leg 117, in the western Arabian Sea, provide a continuous, high resolution sedimentary record from the early Miocene to present. The late Miocene to Recent is marked by rapidly increasing 87Sr/86Sr ratios in seawater, which results in a chronostratigraphical resolution varying from 0.2 Ma to 1.5 Ma. The 87Sr/86Sr seawater curve has a stepwise character similar to the one determined by DePaolo on Site 590B, in the Tasman Sea, and to the one determined by McKenzie on Site 653A, in the Mediterranean, confirming its use as a chronostratigraphic tool for this time span. Periods of rapid increase in the 87Sr/86Sr isotopic ratio of seawater are correlated with important changes in tectonic and climatic conditions.
Experiments showed that bulk carbonate sediment samples have differing 87Sr/86Sr ratios from those of planktonic and benthic foraminifers from the same depth.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 16.621800 * Longitude: 59.795300
Date/Time Start: 1987-09-07T00:00:00 * Date/Time End: 1987-09-13T00:00:00
Minimum DEPTH, sediment/rock: 9.8 m * Maximum DEPTH, sediment/rock: 391.8 m
Event(s):
117-722 * Latitude: 16.621800 * Longitude: 59.795300 * Date/Time Start: 1987-09-07T00:00:00 * Date/Time End: 1987-09-13T00:00:00 * Elevation: -2033.5 m * Penetration: 845.6 m * Recovery: 611.8 m * Location: Arabian Sea * Campaign: Leg117 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 88 cores; 845.1 m cored; 0 m drilled; 72.4% recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Beets, Christiaan J | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | AGE | Age | ka BP | Geocode | ||
| 4 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Beets, Christiaan J | Mass spectrometer Finnigan MAT 261 | ||
| 5 | Strontium-87/Strontium-86 ratio, error | 87Sr/86Sr e | ± | Beets, Christiaan J | Mass spectrometer Finnigan MAT 261 |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
78 data points