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Payros, Aitor; Ortiz, Silvia; Alegret, Laia; Orue-Etxebarria, Xabier; Apellaniz, Estibaliz; Molina, Eustoquio (2012): Mineralogy, geochemistry and benthic foraminifera of the Gorrondatxe beach section [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.826209, Supplement to: Payros, A et al. (2012): An early Lutetian carbon-cycle perturbation: Insights from the Gorrondatxe section (western Pyrenees, Bay of Biscay). Paleoceanography, 27(2), PA2213, https://doi.org/10.1029/2012PA002300

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Abstract:
A distinctive low-carbonate interval interrupts the continuous limestone-marl alternation of the deep-marine Gorrondatxe section at the early Lutetian (middle Eocene) C21r/C21n Chron transition. The interval is characterized by increased abundance of turbidites and kaolinite, a 3 per mil decline in the bulk d13C record, a >1 per mil decline in benthic foraminiferal d13C followed by a gradual recovery, a distinct deterioration in foraminiferal preservation, high proportions of warm-water planktic foraminifera and opportunistic benthic foraminifera, and reduced trace fossil and benthic foraminiferal diversity, thus recording a significant environmental perturbation. The onset of the perturbation correlates with the C21r-H6 event recently defined in the Atlantic and Pacific oceans, which caused a 2°C warming of the seafloor and increased carbonate dissolution. The perturbation was likely caused by the input of 13C-depleted carbon into the ocean-atmosphere system, thus presenting many of the hallmarks of Paleogene hyperthermal deposits. However, from the available data it is not possible to conclusively state that the event was associated with extreme global warming. Based on our analysis, the perturbation lasted 226 kyr, from 47.44 to 47.214 Ma, and although this duration suggests that the triggering mechanism may have been similar to that of the Paleocene-Eocene Thermal Maximum (PETM), the magnitude of the carbon input and the subsequent environmental perturbation during the early Lutetian event were not as severe as in the PETM.
Coverage:
Latitude: 43.380000 * Longitude: -3.017000
Event(s):
Gorrondatxe_Beach_Section * Latitude: 43.380000 * Longitude: -3.017000 * Location: Spain * Method/Device: Outcrop sample (OUTCROP)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
7 datasets

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Datasets listed in this publication series

  1. Payros, A; Ortiz, S; Alegret, L et al. (2012): (Table S7) Abundance of benthic foraminiferal taxa and assemblages indices from the Ypresian-Lutetian transition in the Gorrondatxe section. https://doi.org/10.1594/PANGAEA.826208
  2. Payros, A; Ortiz, S; Alegret, L et al. (2012): (Table S4) Carbonate content of the Gorrondatxe section hemipelagic deposit. https://doi.org/10.1594/PANGAEA.826205
  3. Payros, A; Ortiz, S; Alegret, L et al. (2012): (Table S1) Different types of turbiditic and hemipelagic deposits in the Gorrondatxe section. https://doi.org/10.1594/PANGAEA.826202
  4. Payros, A; Ortiz, S; Alegret, L et al. (2012): (Table S6) Stable isotope record of Nuttallides truempyi from hemipelagic deposits of the Gorrondatxe section. https://doi.org/10.1594/PANGAEA.826207
  5. Payros, A; Ortiz, S; Alegret, L et al. (2012): (Table S5) Whole-rock stable isotope results from hemipelagic deposits of the Gorrondatxe section. https://doi.org/10.1594/PANGAEA.826206
  6. Payros, A; Ortiz, S; Alegret, L et al. (2012): (Table S3) Clay mineral analysis from the Gorrondatxe section hemipelagic deposits. https://doi.org/10.1594/PANGAEA.826204
  7. Payros, A; Ortiz, S; Alegret, L et al. (2012): (Table S2) Whole-rock mineralogy from the Gorrondatxe section hemipelagic deposits. https://doi.org/10.1594/PANGAEA.826203