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Jacobel, Allison W; Pallone, Celeste T; Costa, Kassandra M; Anderson, Robert F; McManus, Jerry F (2025): 160 kyr Multiproxy oxygen data from ODP 1240 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.982869 (DOI registration in progress)

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Published: 2025-06-18

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Abstract:
Here, we present ~160 kyr geochemical datasets from Ocean Discovery Program Site 1240 in the eastern equatorial Pacific to constrain paleoproductivity (Baxs flux) and BWO using a multiproxy approach (aU, Mn/Al, Δδ13C, and U/Ba). Quantitative records of bottom water oxygen (BWO) are critical for understanding deep ocean change through time. Because of the stoichiometric relationship between oxygen and carbon, BWO records provide insight into the physical and biogeochemical processes that control the air-sea partitioning of both gases with important implications for climate over Quaternary glacial-interglacial cycles.
Supplement to:
Jacobel, Allison W; Pallone, Celeste T; Costa, Kassandra M; Anderson, Robert; McManus, Jerry F (2025): Orbital Influences on Deep Ocean Oxygen Concentrations and Respired Carbon Storage. Global Biogeochemical Cycles, https://doi.org/10.1029/2025GB008503
References:
Costa, Kassandra M; Nielsen, Sune G; Wang, Yi; Lu, Wanyi; Hines, Sophia K V; Jacobel, Allison W; Oppo, Delia W (2023): Marine sedimentary uranium to barium ratios as a potential quantitative proxy for Pleistocene bottom water oxygen concentrations. Geochimica et Cosmochimica Acta, 343, 1-16, https://doi.org/10.1016/j.gca.2022.12.022
Jacobel, Allison W; Anderson, Robert F; Jaccard, Samuel L; McManus, Jerry F; Pavia, Frank J; Winckler, Gisela (2020): Deep Pacific storage of respired carbon during the last ice age: Perspectives from bottom water oxygen reconstructions. Quaternary Science Reviews, 230, 106065, https://doi.org/10.1016/j.quascirev.2019.106065
Pallone, Celeste T; McManus, Jerry F; Jacobel, Allison W (2025): Eastern equatorial Pacific paleo-productivity and carbon cycling during the late Pleistocene. Earth and Planetary Science Letters, 656, 119255, https://doi.org/10.1016/j.epsl.2025.119255
Rippert, Nadine; Max, Lars; Mackensen, Andreas; Cacho, Isabel; Povea, Patricia; Tiedemann, Ralf (2017): Alternating influence of northern versus southern-sourced water masses on the equatorial Pacific subthermocline during the past 240 ka. Paleoceanography, 32(11), 1256-1274, https://doi.org/10.1002/2017PA003133
Funding:
National Science Foundation (NSF), grant/award no. AGS-1502889
National Science Foundation (NSF), grant/award no. OCE-210300
National Science Foundation (NSF), grant/award no. OCE-2103031
Coverage:
Latitude: 0.021850 * Longitude: -86.462630
Date/Time Start: 2002-05-16T00:00:00 * Date/Time End: 2002-05-16T00:00:00
Minimum Elevation: -2920.8 m * Maximum Elevation: -2920.8 m
Event(s):
202-1240 * Latitude: 0.021850 * Longitude: -86.462630 * Date/Time: 2002-05-16T00:00:00 * Elevation: -2920.8 m * Penetration: 613.1 m * Recovery: 622.5 m * Location: Equatorial East Pacific * Campaign: Leg202 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 65 cores; 603.7 m cored; 9.4 m drilled; 103.1 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1AGEAgeka BPJacobel, Allison Wsee commentGeocode – Age model from Rippert et al. (2017; doi:10.1002/2017PA003133) and updated by Pallone et al. (2025; doi:10.1016/j.epsl.2025.119255 ).
2BariumBamg/kgJacobel, Allison WInductively coupled plasma-optical emission spectrometer, ICP-OESError: 0.1
3Barium excessBa xsmg/kgJacobel, Allison WInductively coupled plasma-optical emission spectrometer, ICP-OESError: 0.1
4IronFemg/kgJacobel, Allison WInductively coupled plasma-optical emission spectrometer, ICP-OESError: 0.33
5AluminiumAlmg/kgJacobel, Allison WInductively coupled plasma-optical emission spectrometer, ICP-OESError: 0.78
6ManganeseMnmg/kgJacobel, Allison WInductively coupled plasma-optical emission spectrometer, ICP-OESError: 0.21
7ln-Uranium/Barium ratioln(U/Ba)Jacobel, Allison WFrom the original publicationU data are from Jacobel et al. (2020; doi:10.1016/j.quascirev.2019.106065) and Pallone et al. (2025; doi:10.1016/j.epsl.2025.119255 ).
8Bottom water oxygenBWOµmol/kgJacobel, Allison WFrom the original publicationCalibration is from Costa et al. (2023; doi:10.1016/j.gca.2022.12.022). ln of U/Ba ratio converted to bottom water oxygen (BWO) concentrations
9Bottom water oxygen, minimumBWO minµmol/kgJacobel, Allison WFrom the original publicationCalibration is from Costa et al. (2023; doi:10.1016/j.gca.2022.12.022).
10Bottom water oxygen, maximumBWO maxµmol/kgJacobel, Allison WFrom the original publicationCalibration is from Costa et al. (2023; doi:10.1016/j.gca.2022.12.022).
11Barium excess, fluxBa xs fluxmg/cm2/kaJacobel, Allison WFrom the original publicationFluxes are from Jacobel et al. (2020; doi:10.1016/j.quascirev.2019.106065) and Pallone et al. (2025; doi:10.1016/j.epsl.2025.119255 ).
12Barium excess, flux, uncertaintyBa xs flux unc±Jacobel, Allison WInductively coupled plasma-optical emission spectrometer, ICP-OES
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1155 data points

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