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Thompson, Elisabet I; Schmitz, Birger (1997): Barium concentrations und stable isotope ratios of late Paleocene deep-sea sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.809477, Supplement to: Thompson, EI; Schmitz, B (1997): Barium and the Late Paleocene d13C maximum: Evidence of increased marine surface productivity. Paleoceanography, 12(2), 239-254, https://doi.org/10.1029/96PA03331

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Abstract:
Deep-sea sediment Ba* (Ba/Al2O3(sample) * 15% - Ba(aluminosilicate) records show increasing values synchronous with the evolution of the late Paleocene global d13C maximum, reflecting an increase in marine surface primary production and biogenic barite formation at this time. At two oligotrophic locations, Deep Sea Drilling Project (DSDP) Sites 384 and 527 in the North and South Atlantic, respectively, Ba* increases from 160–360 ppm in the early Paleocene to 1100–3000 ppm during the d13C maximum. At equatorial DSDP Site 577, positioned within or near the high-productivity zone, Ba* increases from ~15,500 ppm in the early Paleocene to ~25,400 ppm in conjunction with late Paleocene maximum d13C values. Linear fitted correlation plots of sediment Ba* content versus surface water d13C in all three regions support barite originating in the euphotic zone. The early to late Paleocene relative increase in Ba* illustrates how burial rates of Corg (relative to Al2O3) accelerated by a factor of ~1.8 and ~6.0 in the eutrophic and oligotrophic areas, respectively. A tentative estimate, weighing our result for the entire ocean, suggests that accumulation rates of organic carbon increased by a factor of 2 during the late Paleocene d13C maximum.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 16.192388 * Median Longitude: 31.560880 * South-bound Latitude: -28.041500 * West-bound Longitude: -51.663300 * North-bound Latitude: 40.360800 * East-bound Longitude: 157.723300
Date/Time Start: 1975-07-12T00:00:00 * Date/Time End: 1982-05-23T00:00:00
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. Thompson, EI; Schmitz, B (2013): (Table 1) Barium concentrations in deep sea sediments. https://doi.org/10.1594/PANGAEA.809397
  2. Thompson, EI; Schmitz, B (1997): (Table 4) Stable carbon and oxygen isotope ratios of foraminifera from DSDP Hole 43-384. https://doi.org/10.1594/PANGAEA.809470
  3. Thompson, EI; Schmitz, B (1997): (Table 3) Stable carbon and oxygen isotope ratios of foraminifera from DSDP Hole 74-527. https://doi.org/10.1594/PANGAEA.809468
  4. Thompson, EI; Schmitz, B (1997): (Table 2) Stable carbon and oxygen isotope ratios of foraminifera from DSDP Hole 86-577. https://doi.org/10.1594/PANGAEA.809195