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Hoegler, Brianna; Herbert, Timothy D; Pahigian, Jamie (2026): Depth integration of ODP Hole 177-1090D [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.988391

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Published: 2026-01-13 • DOI registered: 2026-02-11

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Abstract:
Alkenones, lipid biomarkers produced by certain species of coccolithophores and preserved in marine sediment cores, are a well-established proxy of sea surface temperature (SST). Here, we share a dataset containing a high resolution (~2-3 kyr) record of previously unpublished SST estimates for ODP Site 1090 during the Pliocene, calculated using the Uk'37 alkenone unsaturation index. The data spans approximately 4.27-2.58 Ma. We additionally supply the estimated maximum %C37:4, revealing low concentrations of this ketone. Using our SST estimates and shipboard data (magnetic susceptibility and cryomagnetic inclination), we produced an improved composite of ODP Site 1090 Holes D and E by correlating the two holes' properties. We then used biostratigraphic, magnetostratigraphic, and SST data to establish constraints for our age model. Although alkenone-based SST records Site ODP 1090 records already exist, we were motivated to create this reconstruction because inconsistent temperature estimates across existing reconstructions (Etourneau et al., 2010 & Martínez-Garcia et al., 2010) and unusually high reported C37:4 values in the Martínez-Garcia record. Our record reveals both lower SST estimates and lower %C37:4 than those in the Martínez-Garcia record.
Keyword(s):
Alkenone; alkenone concentration; alkenone paleothermometry; alkenone SST; Alkenone Uk'37 index; ODP; ODP 1090; Paleoceanographic proxies; Paleoceanography; Pliocene; Pliocene Paleoceanography; Sea surface temperature; SST
Supplement to:
Hoegler, Brianna; Herbert, Timothy D; Pahigian, Jamie (preprint): South Atlantic lipid biomarkers support synchronous Plio-Pleistocene global cooling: Revising the ODP Site 1090 sea surface temperature record. https://doi.org/10.5194/egusphere-2025-5436
Funding:
National Science Foundation (NSF), grant/award no. 1459280: A New View of Pliocene Glaciations
National Science Foundation (NSF), grant/award no. 1545859: PIRE: DUST stimulated drawn-down of atmospheric CO2 as a trigger for Northern Hemisphere Glaciation
Coverage:
Median Latitude: -42.913617 * Median Longitude: 8.899927 * South-bound Latitude: -42.913700 * West-bound Longitude: 8.899700 * North-bound Latitude: -42.913600 * East-bound Longitude: 8.900000
Date/Time Start: 1997-12-26T15:22:00 * Date/Time End: 1997-12-30T00:55:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3 datasets

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Datasets listed in this bundled publication

  1. Hoegler, B; Herbert, TD; Pahigian, J (2026): Age-depth model from ODP Hole 177-1090D. https://doi.org/10.1594/PANGAEA.988355
  2. Hoegler, B; Herbert, TD; Pahigian, J (2026): Alkenone concentration of ODP Site 177-1090. https://doi.org/10.1594/PANGAEA.988369
  3. Hoegler, B; Herbert, TD; Pahigian, J (2026): Depth integration of ODP Hole 177-1090D. https://doi.org/10.1594/PANGAEA.988390