Ford, Heather L; Raymo, Maureen E (2019): Regional seawater δ18O records and global δ18O seawater-stack over the mid-Pleistocene transition [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.908121
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Abstract:
High-resolution seawater δ18O records, derived from coupled benthic foraminifera Mg/Ca and δ18O analyses, can be used to evaluate how global ice volume changed during the Mid-Pleistocene Transition (MPT, ~1250-600 ka ago). However, such seawater δ18O records are also influenced by regional hydrographic signals (i.e. salinity) and changes in deep ocean circulation across the MPT, making it difficult to isolate the timing and magnitude of the global ice volume change.
Here we generated a new seawater δ18O from coupled Mg/Ca and δ18O analyses of benthic foraminifera Uvigerina spp. Ocean Drilling Program Site 1208 in the North Pacific.
We use PSU Solver (Thirumalai et al., 2016) to propagate error on seawater δ18O for ODP Site 1208 and previously published benthic foraminifera Mg/Ca and δ18O records from North Atlantic DSDP Site 607 (Sosdian and Rosenthal, 2009; Ford et al., 2016; Cibicidoides wuellerstorfi, Oridorsalis umbonatus, and Uvigerina spp.) and South Pacific ODP 1123 (Elderfield et al., 2012; Uvigerina spp.).
Using these three records we generated a seawater d18O stack over the Mid-Pleistocene Transition.
Supplement to:
Ford, Heather L; Raymo, Maureen E (2020): Regional and global signals in seawater δ18O records across the mid-Pleistocene transition. Geology, 48(2), 113-117, https://doi.org/10.1130/G46546.1
Further details:
Elderfield, Henry; Ferretti, Patrizia; Greaves, Mervyn; Crowhurst, Simon J; McCave, I Nick; Hodell, David A; Piotrowski, Alexander M (2012): Evolution of ocean temperature and ice volume through the Mid-Pleistocene Climate Transition. Science, 337(6095), 704-709, https://doi.org/10.1126/science.1221294
Ford, Heather L; Sosdian, Sindia M; Rosenthal, Yair; Raymo, Maureen E (2016): Gradual and abrupt changes during the Mid-Pleistocene Transition. Quaternary Science Reviews, 148, 222-233, https://doi.org/10.1016/j.quascirev.2016.07.005
Sosdian, Sindia M; Rosenthal, Yair (2009): Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions. Science, 325(5938), 306-310, https://doi.org/10.1126/science.1169938
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
Coverage:
Median Latitude: 23.953974 * Median Longitude: -168.608329 * South-bound Latitude: -41.786000 * West-bound Longitude: 158.201580 * North-bound Latitude: 41.001200 * East-bound Longitude: -32.957300
Date/Time Start: 1983-07-06T00:00:00 * Date/Time End: 2001-09-17T13:30:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
7 datasets
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Datasets listed in this publication series
- Ford, HL; Raymo, ME (2019): δ18O seawater-stack over the mid-Pleistocene transition. https://doi.org/10.1594/PANGAEA.908120
- Ford, HL; Raymo, ME (2019): δ18O seawater reconstructions of DSDP site 94-607. https://doi.org/10.1594/PANGAEA.908271
- Ford, HL; Raymo, ME (2019): δ18 seawater reconstructions of ODP site 181-1123. https://doi.org/10.1594/PANGAEA.908272
- Ford, HL; Raymo, ME (2019): Age depth scale of ODP hole 198-1208A. https://doi.org/10.1594/PANGAEA.908273
- Ford, HL; Raymo, ME (2019): δ18O seawater reconstructions of ODP site 198-1208. https://doi.org/10.1594/PANGAEA.908270
- Ford, HL; Raymo, ME (2019): Stable oxygen isotopes of benthic foraminifera from ODP hole 198-1208A. https://doi.org/10.1594/PANGAEA.908266
- Ford, HL; Raymo, ME (2019): Magnesium/calcium in Uvigerina spp. from ODP hole 198-1208A. https://doi.org/10.1594/PANGAEA.908265