Martin, Ellen E; Shackleton, Nicholas J; Zachos, James C; Flower, Benjamin P (1999): Core data of orbitally tuned Sr-isotope chemostratigraphy for the Late Middle and Late Miocene [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.735728, Supplement to: Martin, EE et al. (1999): Orbitally Tuned Sr Isotope Chemostratigraphy for the Late Middle and Late Miocene. Paleoceanography, 14(1), 74-83, https://doi.org/10.1029/1998PA900008
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Abstract:
We present a Sr chemostratigraphic reference section for the late middle to late Miocene (14-5 Ma) from Ocean Drilling Program site 926 on the Ceara Rise. This site combines a precise, orbitally tuned timescale with a high sedimentation rate (15 m/m.y.), continuous deposition, and excellent biostratigraphic control. The Sr isotope curve is based on measurements of cleaned, planktonic foraminifera at 100-200 kyr sample intervals and it illustrates periods of rapid change in 87Sr/86Sr alternating with periods of little change. Chemostratigraphically-defined ages for these intervals can be determined within +/-0.8 m.y. and +/-1.6 m.y. respectively. There is excellent correlation with the published curve for site 588 [Hodell and Woodruff, 1994]; however the curve for site 747 [Oslick et al., 1994] exhibits less structure, which may be due to small errors in age estimates related to slow sedimentation rates, high-latitude fauna and an interval of complicated magnetics. Late Miocene data compare favorably with data from site 758 [Farrell et al., 1995].
Related to:
Hodell, David A; Woodruff, Fay (1994): Variations in the strontium isotopic ratio of seawater during the Miocene: Stratigraphic and geochemical implications. Paleoceanography, 9(3), 405-426, https://doi.org/10.1029/94PA00292
Oslick, Jeffrey S; Miller, Kenneth G; Feigenson, Mark D; Wright, James D (1994): Oligocene-Miocene strontium isotopes: Stratigraphic revisions and correlations to an inferred glacioeustatic record. Paleoceanography, 9(3), 427-444, https://doi.org/10.1029/94PA00249
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 3.719017 * Longitude: -42.908300
Date/Time Start: 1994-02-19T00:00:00 * Date/Time End: 1994-02-27T00:00:00
Minimum DEPTH, sediment/rock: 153.92 m * Maximum DEPTH, sediment/rock: 493.09 m
Event(s):
154-926 * Latitude: 3.719017 * Longitude: -42.908300 * Date/Time Start: 1994-02-19T00:00:00 * Date/Time End: 1994-02-27T00:00:00 * Elevation: -3610.0 m * Penetration: 1331.1 m * Recovery: 1322.4 m * Location: South Atlantic Ocean * Campaign: Leg154 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 141 cores; 1330.6 m cored; 0 m drilled; 99.4% recovery
Comment:
Depth is the depth of each sample in meters composite depth. The 87Sr/86Sr value for NIST-987 is 0.721035. A minimum error assigned to all samples is +/-0.000023, which represents the external error, or 2 sigma uncertainty of repeat analyses of the standard. The internal error, or within-run uncertainty, was always less than this value. All ratios are fractionation corrected to 86Sr/88Sr = 0.1194.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Martin, Ellen E | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Martin, Ellen E | |||
| 4 | Age model | Age model | ka | Martin, Ellen E | Age, calculated calendar years | Tuned age determined by Shackleton by orbital tuning |
| 5 | Age model | Age model | ka | Martin, Ellen E | Age, calculated calendar years | Age derived from Hodell and Woodruff (1994) |
| 6 | Age model | Age model | ka | Martin, Ellen E | Age, calculated calendar years | Age derived from Oslick et al. (1994) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
460 data points