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Paytan, Adina; Averyt, Kristen; Faul, Kristina L; Gray, E; Thomas, E (2007): Ba/Sr ratio in marine barite from five DSDP and ODP holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.723902, Supplement to: Paytan, A et al. (2007): Barite accumulation, ocean productivity, and Sr/Ba in barite across the Paleocene-Eocene Thermal Maximum. Geology, 35(12), 1139-1142, https://doi.org/10.1130/G24162A.1

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Published: 2007 (exact date unknown) • DOI registered: 2009-08-06

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Abstract:
The Paleocene-Eocene Thermal Maximum (PETM), ca. 55 Ma, was a period of extreme global warming caused by rapid emission of greenhouse gases. It is unknown what ended this episode of greenhouse warming, but high oceanic export productivity over thousands of years (as indicated by high accumulation rates of barium, Ba) may have been a factor in ending this warm period by carbon sequestration. However, Ba has a short oceanic residence time (~10 k.y.), so a prolonged global increase in Ba accumulation rates requires an increase in input of Ba to the ocean, increasing barite saturation. We use a novel proxy for barite saturation (Sr/Ba in marine barite) to demonstrate that the seawater saturation state with respect to barite did not change across the PETM. The observations of increased barite burial, no change in saturation, and the short residence time can be reconciled if Ba burial decreased at continental margin and shelf sites due to widespread occurrence of suboxic conditions, leading to Ba release into the water column, combined with increased biological export production at some pelagic sites, resulting in Ba sink reorganization.
Related to:
Zachos, James C; Pagani, Mark; Sloan, Lisa; Thomas, E; Billups, Katharina (2001): Trends, rhythms, and aberrations in global climate 65 Ma to present. Science, 292(5517), 686-693, https://doi.org/10.1126/science.1059412
Zachos, James C; Röhl, Ursula; Schellenberg, Stephen A; Sluijs, Appy; Hodell, David A; Kelly, Daniel Clay; Thomas, Ellen; Nicolo, Micah J; Raffi, Isabella; Lourens, Lucas Joost; McCarren, H; Kroon, Dick (2005): Rapid Acidification of the Ocean During the Paleocene-Eocene Thermal Maximum. Science, 308(5728), 1611-1615, https://doi.org/10.1126/science.1109004
Other version:
Ba/Sr repository [dataset]. ftp://rock.geosociety.org/pub/reposit/2007/2007279.pdf
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 11.985989 * Median Longitude: 133.664696 * South-bound Latitude: -28.533230 * West-bound Longitude: 2.779630 * North-bound Latitude: 32.441800 * East-bound Longitude: -143.694180
Date/Time Start: 1973-08-29T00:00:00 * Date/Time End: 2003-04-05T10:15:00
Event(s):
32-305 * Latitude: 32.002200 * Longitude: 157.850000 * Date/Time: 1973-08-29T00:00:00 * Elevation: -2903.0 m * Penetration: 640.5 m * Recovery: 212.2 m * Location: North Pacific/CONT RISE * Campaign: Leg32 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 67 cores; 622 m cored; 9 m drilled; 34.1 % recovery
86-577 * Latitude: 32.441800 * Longitude: 157.723300 * Date/Time: 1982-05-23T00:00:00 * Elevation: -2675.0 m * Penetration: 118.8 m * Recovery: 111.1 m * Location: North Pacific Ocean * Campaign: Leg86 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 13 cores; 118.8 m cored; 0 m drilled; 93.5 % recovery
199-1221C * Latitude: 12.033110 * Longitude: -143.694180 * Date/Time: 2001-12-05T00:00:00 * Elevation: -5174.4 m * Penetration: 157.3 m * Recovery: 54.07 m * Location: North Pacific Ocean * Campaign: Leg199 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 12 cores; 100.2 m cored; 57.1 m drilled; 54 % recovery
Comment:
Age data were derived from Zachos et al. (2001) and Zachos et al. (2005).
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Paytan, A; Averyt, K; Faul, KL et al. (2007): Ba/Sr ratio in marine barite from DSDP Hole 32-305. https://doi.org/10.1594/PANGAEA.723898
  2. Paytan, A; Averyt, K; Faul, KL et al. (2007): Ba/Sr ratio in marine barite from DSDP Hole 86-577. https://doi.org/10.1594/PANGAEA.723899
  3. Paytan, A; Averyt, K; Faul, KL et al. (2007): Ba/Sr ratio in marine barite from ODP Hole 199-1221C. https://doi.org/10.1594/PANGAEA.723897
  4. Paytan, A; Averyt, K; Faul, KL et al. (2007): Ba/Sr ratio in marine barite from ODP Site 208-1263. https://doi.org/10.1594/PANGAEA.723900