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Turchyn, Alexandra V; Schrag, Daniel P (2004): (Table S1) Stable oxygen isotope record of barite from DSDP Leg 85 sites. PANGAEA, https://doi.org/10.1594/PANGAEA.772068, Supplement to: Turchyn, AV; Schrag, DP (2004): Oxygen isotope constraints on the sulfur cycle over the past 10 million years. Science, 303(5666), 2004-2007, https://doi.org/10.1126/science.1092296

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Abstract:
Oxygen isotopes in marine sulfate (d18O SO4) measured in marine barite show variability over the past 10 million years, including a 5per mil decrease during the Plio-Pleistocene, with near-constant values during the Miocene that are slightly enriched over the modern ocean. A numerical model suggests that sea level fluctuations during Plio-Pleistocene glacial cycles affected the sulfur cycle by reducing the area of continental shelves and increasing the oxidative weathering of pyrite. The data also require that sulfate concentrations were 10 to 20% lower in the late Miocene than today.
Project(s):
Coverage:
Median Latitude: 3.318313 * Median Longitude: -128.916950 * South-bound Latitude: 0.498500 * West-bound Longitude: -135.036000 * North-bound Latitude: 5.850000 * East-bound Longitude: -113.842000
Date/Time Start: 1982-03-19T00:00:00 * Date/Time End: 1982-04-21T00:00:00
Minimum Elevation: -4561.0 m * Maximum Elevation: -3893.0 m
Event(s):
85-571 * Latitude: 3.997300 * Longitude: -114.142200 * Date/Time: 1982-03-19T00:00:00 * Elevation: -3962.0 m * Penetration: 7.1 m * Recovery: 7.1 m * Location: North Pacific * Campaign: Leg85 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 1 cores; 7.1 m cored; 0 m drilled; 100.1 % recovery
85-572A * Latitude: 1.434800 * Longitude: -113.842000 * Date/Time: 1982-03-22T00:00:00 * Elevation: -3893.0 m * Penetration: 154 m * Recovery: 154.4 m * Location: North Pacific * Campaign: Leg85 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 17 cores; 154 m cored; 0 m drilled; 100.2 % recovery
85-573 * Latitude: 0.498500 * Longitude: -133.309500 * Date/Time: 1982-04-02T00:00:00 * Elevation: -4301.0 m * Penetration: 158.6 m * Recovery: 159 m * Location: North Pacific/TROUGH * Campaign: Leg85 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 158.6 m cored; 0 m drilled; 100.6 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Sample code/labelSample labelTurchyn, Alexandra VODP sample designation
3AGEAgeka BPGeocode
4delta 18O, barited18O brtper mil SMOWTurchyn, Alexandra V
5Sample code/label 2Sample label 2Turchyn, Alexandra V
Size:
477 data points

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