Capo, RC; DePaolo, Donald J (1990): (Table 1) Trace element concentrations and Sr isotope ratios of carbonates [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.772140, Supplement to: Capo, RC; DePaolo, DJ (1990): Seawater Strontium isotopic variations from 2.5 million years ago to the present. Science, 249(4964), 51-55, https://doi.org/10.1126/science.249.4964.51
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Published: 1990 (exact date unknown) • DOI registered: 2011-12-30
Abstract:
Measurements of marine carbonate samples indicate that during the past 2.5 million years the 87Sr/86Sr ratio of seawater has increased by 14 * 10**-5. The high average rate of increase of 87Sr/86Sr indicates that continental weathering rates were exceptionally high. Nonuniformity in the rate of increase suggests that weathering rates fluctuated by as much as ±30 percent of present-day values. Some of the observed shifts in weathering rates are contemporaneous with climatic changes inferred from records of oxygen isotopes and carbonate preservation in deep sea sediments.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: -11.637333 * Median Longitude: 168.425917 * South-bound Latitude: -31.167000 * West-bound Longitude: 156.100000 * North-bound Latitude: 20.330000 * East-bound Longitude: -156.100000
Date/Time Start: 1971-05-08T00:00:00 * Date/Time End: 1982-12-15T00:00:00
Minimum DEPTH, sediment/rock: 0.0 m * Maximum DEPTH, sediment/rock: 107.0 m
Event(s):
90-590 * Latitude: -31.167000 * Longitude: 163.358500 * Date/Time: 1982-12-15T00:00:00 * Elevation: -1299.0 m * Penetration: 26.2 m * Recovery: 26.4 m * Location: South Pacific/Tasman Sea/CONT RISE * Campaign: Leg90 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 3 cores; 26.2 m cored; 0 m drilled; 100.6 % recovery
90-590A * Latitude: -31.167000 * Longitude: 163.358500 * Date/Time: 1982-12-15T00:00:00 * Elevation: -1299.0 m * Penetration: 280.8 m * Recovery: 225.1 m * Location: South Pacific/Tasman Sea/CONT RISE * Campaign: Leg90 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 26 cores; 245 m cored; 9.6 m drilled; 91.9 % recovery
90-590B * Latitude: -31.167000 * Longitude: 163.358500 * Date/Time: 1982-12-15T00:00:00 * Elevation: -1299.0 m * Penetration: 499.1 m * Recovery: 464.6 m * Location: South Pacific/Tasman Sea/CONT RISE * Campaign: Leg90 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 53 cores; 499.1 m cored; 0 m drilled; 93.1 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Smirnov, Alexander | DSDP/ODP/IODP sample designation | ||
| 3 | Sample comment | Sample comment | Smirnov, Alexander | |||
| 4 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 5 | Nannofossil zone | Nannos zone | Smirnov, Alexander | |||
| 6 | AGE | Age | ka BP | Geocode | ||
| 7 | Potassium | K | mg/kg | Smirnov, Alexander | ||
| 8 | Strontium | Sr | mg/kg | Smirnov, Alexander | ||
| 9 | Rubidium-87/Strontium-86 ratio | 87Rb/86Sr | Smirnov, Alexander | |||
| 10 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Smirnov, Alexander | measured | ||
| 11 | Strontium-87/Strontium-86 ratio, error | 87Sr/86Sr e | ± | Smirnov, Alexander | measured, 2 sigma | |
| 12 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Smirnov, Alexander | avereage | ||
| 13 | Strontium-87/Strontium-86 ratio, error | 87Sr/86Sr e | ± | Smirnov, Alexander | avereage, 2 sigma |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
337 data points