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Liebrand, Diederik; Beddow, Helen M; Lourens, Lucas Joost; Pälike, Heiko; Raffi, Isabella; Bohaty, Steven M; Hilgen, Frederik J; Saes, Mischa JM; Wilson, Paul A; van Dijk, Arnold E; Hodell, David A; Kroon, Dick; Huck, Claire E; Batenburg, Sietske J (2016): Cyclostratigraphy and eccentricity tuning of the early Oligocene through early Miocene record from Walvis Ridge [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.862589, Supplement to: Liebrand, D et al. (2016): Cyclostratigraphy and eccentricity tuning of the early Oligocene through early Miocene (30.1–17.1 Ma): Cibicides mundulus stable oxygen and carbon isotope records from Walvis Ridge Site 1264. Earth and Planetary Science Letters, 450, 392-405, https://doi.org/10.1016/j.epsl.2016.06.007

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Published: 2016-07-05 • DOI registered: 2016-08-02

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Abstract:
Few astronomically calibrated high-resolution (<=5 kyr) climate records exist that span the Oligocene?Miocene time interval. Notably, available proxy records show responses varying in amplitude at frequencies related to astronomical forcing, and the main pacemakers of global change on astronomical time-scales remain debated. Here we present newly generated X-ray fluorescence core scanning and benthic foraminiferal stable oxygen and carbon isotope records from Ocean Drilling Program Site 1264 (Walvis Ridge, southeastern Atlantic Ocean). Complemented by data from nearby Site 1265, the Site 1264 benthic stable isotope records span a continuous ~13-Myr interval of the Oligo-Miocene (30.1?17.1 Ma) at high resolution (~3.0 kyr). Spectral analyses in the stratigraphic depth domain indicate that the largest amplitude variability of all proxy records is associated with periods of ~3.4 m and ~0.9 m, which correspond to 405- and ~110-kyr eccentricity, using a magnetobiostratigraphic age model. Maxima in CaCO3 content, d18O and d13C are interpreted to coincide with ~110 kyr eccentricity minima. The strong expression of these cycles in combination with the weakness of the precession- and obliquity-related signals allow construction of an astronomical age model that is solely based on tuning the CaCO3 content to the nominal (La2011_ecc3L) eccentricity solution. Very long-period eccentricity maxima (~2.4-Myr) are marked by recurrent episodes of high-amplitude ~110-kyr d18O cycles at Walvis Ridge, indicating greater sensitivity of the climate/cryosphere system to short eccentricity modulation of climatic precession. In contrast, the responses of the global (high-latitude) climate system, cryosphere, and carbon cycle to the 405-kyr cycle, as expressed in benthic d18O and especially d13C signals, are more pronounced during ~2.4-Myr minima. The relationship between the recurrent episodes of high-amplitude ~110-kyr d18O cycles and the ~1.2-Myr amplitude modulation of obliquity is not consistent through the Oligo-Miocene. Identification of these recurrent episodes at Walvis Ridge, and their pacing by the ~2.4-Myr eccentricity cycle, revises the current understanding of the main climate events of the Oligo-Miocene.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -28.644539 * Median Longitude: 2.631550 * South-bound Latitude: -28.835017 * West-bound Longitude: 2.343480 * North-bound Latitude: -28.532483 * East-bound Longitude: 2.845510
Date/Time Start: 2003-04-05T00:00:00 * Date/Time End: 2003-04-21T04:45:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
18 datasets

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Datasets listed in this publication series

  1. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S17) Size fraction, and stable oxygen and carbon isotope records of benthic foraminifera of ODP Sites 208-1264 and 208-1265. https://doi.org/10.1594/PANGAEA.862585
  2. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S15) CaCO3 estimates of ODP Site 208-1264. https://doi.org/10.1594/PANGAEA.862583
  3. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S18) Calcareous nannofossil biostratigraphy of ODP Site 208-1264. https://doi.org/10.1594/PANGAEA.862587
  4. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S1) Composite depth scale of ODP Site 208-1264. https://doi.org/10.1594/PANGAEA.862567
  5. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S3) Mapping pairs for ODP Site 208-1264. https://doi.org/10.1594/PANGAEA.862571
  6. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S2) Splice tie points for ODP Site 208-1264. https://doi.org/10.1594/PANGAEA.862570
  7. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S12) Tuning tie points for ODP Site 208-1264. https://doi.org/10.1594/PANGAEA.862580
  8. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S16) CaCO3 estimates of ODP Site 208-1265. https://doi.org/10.1594/PANGAEA.862584
  9. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S4) Composite depth scale of ODP Site 208-1265. https://doi.org/10.1594/PANGAEA.862572
  10. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S6) Mapping pairs for ODP Site 208-1265. https://doi.org/10.1594/PANGAEA.862574
  11. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S13) Paleomagnetic stratigraphy of ODP Site 208-1265. https://doi.org/10.1594/PANGAEA.862581
  12. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S10) ODP Site 208-1265 to Site 208-1264 tie points. https://doi.org/10.1594/PANGAEA.862578
  13. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S5) Splice tie points for ODP Site 208-1265. https://doi.org/10.1594/PANGAEA.862573
  14. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S7) Composite depth scale of ODP Site 208-1266. https://doi.org/10.1594/PANGAEA.862575
  15. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S9) Mapping pairs for ODP Site 208-1266. https://doi.org/10.1594/PANGAEA.862586
  16. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S14) Paleomagnetic stratigraphy of ODP Site 208-1266. https://doi.org/10.1594/PANGAEA.862582
  17. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S11) ODP Site 208-1266 to Site 208-1264 tie points. https://doi.org/10.1594/PANGAEA.862579
  18. Liebrand, D; Beddow, HM; Lourens, LJ et al. (2016): (Table S8) Splice tie points for ODP Site 208-1266. https://doi.org/10.1594/PANGAEA.862576