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Bornemann, André; Norris, Richard D; Lyman, Johnnie A; D'haenens, Simon; Groeneveld, Jeroen; Röhl, Ursula; Farley, Kenneth A; Speijer, Robert P (2014): Supplementary material: XRF core scanning data, CaCO3 values, foraminiferal carbon and oxygen isotope data, Mg/Ca data, clay mineralogy and helium isotope results [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.833746, Supplement to: Bornemann, A et al. (2014): Persistent environmental change after the Paleocene–Eocene Thermal Maximum in the eastern North Atlantic. Earth and Planetary Science Letters, 394, 70-81, https://doi.org/10.1016/j.epsl.2014.03.017

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Abstract:
The Paleocene-Eocene Thermal Maximum (PETM; ~56 Ma) is associated with abrupt climate change, carbon cycle perturbation, ocean acidification, as well as biogeographic shifts in marine and terrestrial biota that were largely reversed as the climatic transient waned. We report a clear exception to the behavior of the PETM as a reversing climatic transient in the eastern North Atlantic (Deep-Sea Drilling Project Site 401, Bay of Biscay) where the PETM initiates a greatly prolonged environmental change compared to other places on Earth where records exist. The observed environmental perturbation extended well past the d13C recovery phase and up to 650 kyr after the PETM onset according to our extraterrestrial 3He-based age-model. We observe a strong decoupling of planktic foraminiferal d18O and Mg/Ca values during the PETM d13C recovery phase, which in combination with results from helium isotopes and clay mineralogy, suggests that the PETM triggered a hydrologic change in western Europe that increased freshwater flux and the delivery of weathering products to the eastern North Atlantic. This state change persisted long after the carbon-cycle perturbation had stopped. We hypothesize that either long-lived continental drainage patterns were altered by enhanced hydrological cycling induced by the PETM, or alternatively that the climate system in the hinterland area of Site 401 was forced into a new climate state that was not easily reversed in the aftermath of the PETM.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 47.427500 * Longitude: -8.810300
Date/Time Start: 1976-06-06T00:00:00 * Date/Time End: 1976-06-06T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
10 datasets

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Datasets listed in this publication series

  1. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 1: Raw X-ray fluorescence (XRF) core scanning data (Al, Ca, Ti, Fe) of DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833706
  2. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 2: Carbonate content of DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833707
  3. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 3: Helium isotope data of DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833745
  4. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 4: Stable isotope data of Acarinina soldadoensis from DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833725
  5. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 4: Stable isotope data and relative temperature changes of Morozovella subbotinae from DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833724
  6. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 4: Stable isotope data and relative temperature changes of Nuttallides truempy from DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833722
  7. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 4: Stable isotope data and relative temperature changes of Subbotina patagonica from DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833723
  8. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 5: Mg/Ca and relative temperature changes of DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833726
  9. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 6: Relative abundance of clay minerals from DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833715
  10. Bornemann, A; Norris, RD; Lyman, JA et al. (2014): Supplementary table 3: Relative ages of DSDP Site 48-401. https://doi.org/10.1594/PANGAEA.833721