Novak, Joseph B; Abell, Jordan; Kinsley, Christopher (2026): Quaternary trace metals data from ODP Site 198-1208 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.993221, In: Novak, JB et al. (2026): 4.5 million years of deep ocean carbon isotope gradients and trace metals redox data [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.983612
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Published: 2026-04-08 • DOI registered: 2026-04-08
Abstract:
This data set contains authigenic uranium concentrations from ODP Site 198-1208 that span ~2 to 330 thousand years ago. These data give insight into glacial-interglacial changes in sedimentary redox chemistry at the drill site.
Original version:
Novak, Joseph B; Abell, Jordan; Kinsley, Christopher (2026): Quaternary trace metals data from ODP Site 198-1208 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.983610
References:
Abell, Jordan T; Winckler, Gisela (2023): Long‐Term Variability in Pliocene North Pacific Ocean Export Production and Its Implications for Ocean Circulation in a Warmer World. AGU Advances, 4(4), e2022AV000853, https://doi.org/10.1029/2022AV000853
Abell, Jordan T; Winckler, Gisela; Anderson, Robert F; Herbert, Timothy D (2021): Poleward and weakened westerlies during Pliocene warmth. Nature, 589(7840), 70-75, https://doi.org/10.1038/s41586-020-03062-1
Henderson, G M (2003): The U-series Toolbox for Paleoceanography. Reviews in Mineralogy & Geochemistry, 52(1), 493-531, https://doi.org/10.2113/0520493
Kinsley, C W; Bradtmiller, Louisa I; Zhang, Yan; McGee, David (2022): Ocean-atmosphere changes in the midlatitude North Pacific over the last 330 ka: Dust, biogenic sediment and authigenic uranium accumulation at Shatsky Rise — Dataset [dataset]. Zenodo, https://doi.org/10.5281/ZENODO.6791725
McGee, David; Winckler, Gisela; Borunda, Alejandra; Serno, Sascha; Anderson, Robert F; Recasens, Cristina; Bory, Aloys J-M; Gaiero, Diego M; Jaccard, Samuel L; Kaplan, Michael R; McManus, Jerry F; Revel, Marie; Sun, Youbin (2016): Tracking eolian dust with helium and thorium: Impacts of grain size and provenance. Geochimica et Cosmochimica Acta, 175, 47-67, https://doi.org/10.1016/j.gca.2015.11.023
Taylor, Stuart Ross; McLennan, Scott M (1995): The geochemical evolution of the continental crust. Reviews of Geophysics, 33(2), 241, https://doi.org/10.1029/95RG00262
Coverage:
Latitude: 36.127167 * Longitude: 158.201583
Date/Time Start: 2001-09-14T00:00:00 * Date/Time End: 2001-09-17T00:00:00
Minimum Elevation: -3345.7 m * Maximum Elevation: -3345.7 m
Event(s):
198-1208 * Latitude: 36.127167 * Longitude: 158.201583 * Date/Time Start: 2001-09-14T00:00:00 * Date/Time End: 2001-09-17T00:00:00 * Elevation: -3345.7 m * Penetration: 392.3 m * Recovery: 345.9 m * Location: North Pacific Ocean * Campaign: Leg198 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 42 cores; 392.3 m cored; 0 m drilled; 88.2% recovery
Comment:
Methods:
Sample depths, ages, and Th concentrations have been previously published for the both the late Quaternary (Abell et al., 2023; Kinsley et al., 2022) and Pliocene-early Pleistocene (Abell et al., 2021).
Because the late Quaternary data are based on measurements of distinct isotopes of U/Th (238U and 232Th) and not bulk concentrations of these elements, the lithogenic correction for these samples is made using activity ratios.
Here we assume an activity ratio of 0.5. While the (U/Th)lith activity ratio for Pacific sediments is typically assumed to be higher at 0.7 (Henderson & Anderson, 2003), use of this value would produce negative Uauth concentrations.
A ratio of 0.5 does not lead to negative Uauth concentrations, and is consistent with estimates for other ocean basin (Henderson & Anderson, 2003).
In order to make consistent comparison within a site across time, we convert this (U/Th)lith activity ratio to a concentration ratio (0.16125) for calculating Uauth concentrations within the 2.5–4.5 Ma window.
This value is only slightly lower than if we adopted the U concentration of upper continental crust (2.8 ppm; Taylor & McLennan, 1995) and the Th concentration of fine-grained dust (14 ppm; McGee et al., 2016).
We note that any value higher than this would also produce negative Uauth concentrations in this interval, lending confidence in our selected lithogenic (U/Th) ratio.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | AGE | Age | ka BP | Novak, Joseph B | See description in dataset comment | Geocode |
| 2 | Uranium, authigenic | U auth | mg/kg | Novak, Joseph B | See description in dataset comment | Original measured in the sample in parts per million (ppm). |
| 3 | Uranium, authigenic, standard deviation | U auth std dev | ± | Novak, Joseph B | See description in dataset comment | 1sigma. Original measured in the sample in parts per million (ppm). |
Change history:
2026-03-26T07:35:27 – Version 2: Previous version doi:10.1594/PANGAEA.983610 contains errors.
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
320 data points