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  • 1
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    (Table S2) Mg/Ca ratios of benthic foraminifera from sediment core CHAT_1k
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: AGE; BC; Box corer; CHAT_1k; Cibicidoides wuellerstorfi, Magnesium/Calcium ratio; Uvigerina spp., Magnesium/Calcium ratio
    Type: Dataset
    Format: text/tab-separated-values, 19 data points
    Location Call Number Limitation Availability
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  • 2
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    Mg/Ca and stable oxygen isotope ratios of Uvigerina spp. from the Southern Ocean (2010)
    PANGAEA
    In:  Supplement to: Elderfield, Henry; Greaves, Mervyn; Barker, S; Hall, Ian R; Tripati, Aradhna K; Ferretti, Patrizia; Crowhurst, Simon J; Booth, Linda; Daunt, C (2010): A record of bottom water temperature and seawater d18O for the Southern Ocean over the past 440kyr based on Mg/Ca of benthic foraminiferal Uvigerina spp. Quaternary Science Reviews, 29(1-2), 160-169, https://doi.org/10.1016/j.quascirev.2009.07.013
    Details
    Publication Date: 2024-01-09
    Description: The sensitivity to temperature of Mg/Ca ratios in the shallow-infaunal benthic foraminifera Uvigerina spp. has been assessed. Core-top calibrations over ~1-20 °C show a range in sensitivity of 0.065-0.084 mmol/mol/°C but few data are available spanning the temperature range anticipated in deep-sea records over glacial-interglacial cycles. In contrast to epibenthic foraminiferal species, carbonate ion saturation appears not to affect Mg/Ca significantly. A method based on estimating the ratio of the temperature sensitivity of foraminiferal Mg/Ca to that of d18Ocalcite shows that sensitivity for Mg/Ca at the high end of the observed core-top range (~0.1 mmol/mol/°C) is required for consistency with LGM-Holocene differences in each property as constrained by independent proxy data. This is supported by a Mg/Ca record for Uvigerina spp. generated for the Southern Ocean over the past 440,000 years from Ocean Drilling Program Site 1123 (Chatham Rise, New Zealand). The record shows variability that correlates with climate oscillations. The LGM deep ocean temperature derived from the Mg/Ca record is -1.1 ± 0.3 °C. Transformation to temperature allows estimates to be made of changes in bottom water temperature and seawater d18O and comparison made with literature records. Analysis reveals a ~2.5-kyr lead in the record of temperature over calcite d18O and a longer lead over seawater d18O. This is a reflection of larger phase offsets at eccentricity periods; phase offsets at tilt and precession are within error zero.
    Keywords: Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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  • 3
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    (Table T1) Stable oxygen and carbon isotopic composition of benthic foraminifers in ODP Site 199-1218 sediments (2006)
    PANGAEA
    In:  Supplement to: Tripati, Aradhna K; Elderfield, Henry; Booth, Linda; Zachos, James C; Ferretti, Patrizia (2006): Data report: High-resolution benthic foraminiferal stable isotope stratigraphy across the Oligocene/Miocene boundary at Site 1218. In: Wilson, PA; Lyle, M; Firth, JV (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 199, 1-13, https://doi.org/10.2973/odp.proc.sr.199.221.2006
    Details
    Publication Date: 2024-01-09
    Description: The transition from the late Oligocene warm period into the early Miocene was marked by a series of rapid and brief episodes of cryospheric expansion and global cooling. We analyzed benthic foraminifers from nannofossil oozes recovered at Ocean Drilling Program Site 1218 to construct a stable isotope stratigraphy for the deep Pacific.
    Keywords: 199-1218; Age model; Cibicidoides sp., δ13C; Cibicidoides sp., δ18O; COMPCORE; Composite Core; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Joides Resolution; Leg199; Mass spectrometer VG Prism; North Pacific Ocean; Nuttallides umbonifera, δ13C; Nuttallides umbonifera, δ18O; Ocean Drilling Program; ODP; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 2140 data points
    Location Call Number Limitation Availability
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  • 4
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    (Table S3) Mg/Ca ratios of benthic foraminifera from ODP Site 181-1123 (2010)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 181-1123; AGE; COMPCORE; Composite Core; Joides Resolution; Leg181; Ocean Drilling Program; ODP; South Pacific Ocean; Uvigerina spp., Magnesium/Calcium ratio; Uvigerina spp., δ18O
    Type: Dataset
    Format: text/tab-separated-values, 679 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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