Rapid stepwise onset of Antarctic glaciation and deeper calcite compensation in the Pacific Ocean

By H. Coxall, P. Wilson, Heiko Pälike, C. Lear, J. Backman. Nature, 2005

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Cenozoic sea-level and cryospheric evolution from deep-sea geochemical and continental margin records (2020, result): “Our 18O-Mg/Ca estimate shows two EOT steps (EOT-1 and Oi1) as indicated by previous studies (61): ~25 m at EOT-1 (~33.”
The evolution of arid ecosystems in eastern Africa (2006, background): “There was a significant decline in marine temperatures during the Late Eocene, and an abrupt dip during the Eocene–Oligocene boundary, associated with the initial build up of Antarctic ice (Lear et al., 2000; Zachos et al., 2001; Coxall et al., 2005).”
Temperature dependency of metabolic rates in the upper ocean: A positive feedback to global climate change? (2018, background): “2016), leading to the inception of the Antarctic glaciation by the Eocene-Oligocene transition (EOT,∼34Ma; Coxall et al., 2005) and to the establishment of a climate state more similar to the modern.”
Astronomical calibration of the Paleocene time (2008, background): “'s (1999, 2000) data to the new La2004 solution provided the first tuned timescale spanning back to the Eocene/Oligocene boundary (Pälike et al., 2004, 2006; Wade and Pälike, 2004; Coxall et al., 2005).”
Sea ice feedback and Cenozoic evolution of Antarctic climate and ice sheets (2007, background): “generally supported by highly resolved deep-sea records of the Oi-1 transition [Coxall et al., 2005], the ephemeral Mi-1 glaciation [Zachos et al.”