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Thomas, Nicola C; Ford, Heather L; Greaves, Mervyn; Hodell, David A: Deep-Ocean temperature and δ¹⁸Oseawater estimates of ODP Site 177-1094 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.994016 (dataset in review), In: Thomas, NC et al.: IODP Site U1385 paired benthic δ¹⁸Ο and Mg/Ca ratios for the past 1.5 Myr, and compiled North Atlantic, Pacific and Mean Deep Ocean stacks of reconstructed deep-water temperature and δ¹⁸Oseawater [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.980075 (dataset in review)

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Abstract:
Deep-Ocean temperature and δ18Oseawater estimates of ODP Site 177-1094 generated with error propagation using PSU Solver in MATLAB (Thirumalai, Quinn and Marino, 2016). Calibration equations are listed in Thomas et al. (2026) Table 2.
Keyword(s):
Atlantic; benthic δ18O; Cibicidoides wuellerstorfi; deep-water temperature; DWT; Globobulimina affinis; IODP Site U1385; MDOT; Mean deep ocean temperature; Mg/Ca paleothermometry; Middle Pleistocene Transition; MPT; Pacific; Uvigerina peregrina; δ18Oseawater
Related to:
Thomas, Nicola C; Ford, Heather L; Greaves, Mervyn; Hodell, David A (preprint): Increased abyssal ocean density stratification across the Middle Pleistocene Transition. https://doi.org/10.5194/egusphere-2025-4566
References:
Hasenfratz, Adam P; Jaccard, Samuel L; Martínez-García, Alfredo; Sigman, Daniel M; Hodell, David A; Vance, Derek; Bernasconi, Stefano M; Kleiven, Helga F; Haumann, F Alexander; Haug, Gerald H (2019): Age model / tie points of ODP 1094 (1.5 Ma); δ18O, Mg/Ca, Mn/Ca of planktic and benthic foraminifera, sea surface and bottom water temperature, and δ18O of surface and bottom water of ODP Site 177-1094 (1.5 Ma) [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.901386
Hasenfratz, Adam P; Jaccard, Samuel L; Martínez-García, Alfredo; Sigman, Daniel M; Hodell, David A; Vance, Derek; Bernasconi, Stefano M; Kleiven, Helga F; Haumann, F Alexander; Haug, Gerald H (2019): The residence time of Southern Ocean surface waters and the 100,000-year ice age cycle. Science, 363(6431), 1080-1084, https://doi.org/10.1126/science.aat7067
Thirumalai, Kaustubh; Quinn, Terrence Michael; Marino, Gianluca (2016): Constraining past seawater δ18O and temperature records developed from foraminiferal geochemistry. Paleoceanography, 31(10), 1409-1422, https://doi.org/10.1002/2016PA002970
Funding:
Natural Environment Research Council (NERC), grant/award no. NE/K005804/1
Natural Environment Research Council (NERC), grant/award no. NE/R000204/1
Coverage:
Latitude: -53.180350 * Longitude: 5.130333
Date/Time Start: 1998-01-20T00:00:00 * Date/Time End: 1998-01-20T00:00:00
Minimum Elevation: -2807.3 m * Maximum Elevation: -2807.3 m
Event(s):
177-1094 * Latitude: -53.180350 * Longitude: 5.130333 * Date/Time: 1998-01-20T00:00:00 * Elevation: -2807.3 m * Penetration: 441.8 m * Recovery: 306.1 m * Location: South Atlantic Ocean * Campaign: Leg177 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 46 cores; 421.7 m cored; 20.1 m drilled; 72.6% recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1AGEAgeka BPThomas, Nicola CGeocode
2Foraminifera, benthic δ18OForam benth δ18O‰ PDBThomas, Nicola Cvs. VPDB; offset to Uvig
3Deep water temperatureDWT°CThomas, Nicola CCalculated from Mg/Ca ratiosDWT from Mg/Ca ratios
4Deep water temperature, standard errorDWT std e±Thomas, Nicola CCalculated from Mg/Ca ratiosSigma, DWT from Mg/Ca ratios
5δ18O, seawater, reconstructedδ18Osw‰ SMOWThomas, Nicola Cvs. VSMOW
6δ18O, seawater, reconstructed, standard errorδ18Osw std e±Thomas, Nicola CSigma, δ18Osw
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3225 data points

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