Publication Date:
2023-06-27
Description:
The dataset compiles reconstructed changes in bottom water temperature and global ice volume from 0 to 17 Ma using δ18O in conjunction with Mg/Ca records of the infaunal benthic foraminifer, O. umbonatus from Ocean Drilling Program (ODP) Site 130-806 (equatorial Pacific; ~2500 m). This dataset covers the middle Miocene to present (17-0 Ma) and has an average temporal resolution of ~0.2 Ma. Application of the new equations to the Site 130-806 record leads to the suggestion that global ice volume was greater than today after the Middle Miocene Climate Transition (~14 Ma). ODP Site 130-806 bottom waters cooled and freshened as the Pacific zonal sea surface temperature gradient increased, and climate cooled through the Pliocene, prior to the Plio‐Pleistocene glaciation of the Northern Hemisphere.
Keywords:
130-806; AGE; Benthic foraminifera; Bottom water temperature; Calculated (LEAR 2002 Calibration); Calculated (LEAR 2010 Calibration); COMPCORE; Composite Core; Joides Resolution; Leg130; Mg/Ca; North Pacific Ocean; ocean drilling program; ocean temperatures; δ18O, seawater, reconstructed
Type:
Dataset
Format:
text/tab-separated-values, 942 data points
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