Articles | Volume 14, issue 3
Clim. Past, 14, 255–270, 2018
https://doi.org/10.5194/cp-14-255-2018
Clim. Past, 14, 255–270, 2018
https://doi.org/10.5194/cp-14-255-2018

Research article 05 Mar 2018

Research article | 05 Mar 2018

Astronomical tunings of the Oligocene–Miocene transition from Pacific Ocean Site U1334 and implications for the carbon cycle

Helen M. Beddow et al.

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Short summary
We present two astronomy-based timescales for climate records from the Pacific Ocean. These records range from 24 to 22 million years ago, a time period when Earth was warmer than today and the only land ice was located on Antarctica. We use tectonic plate-pair spreading rates to test the two timescales, which shows that the carbonate record yields the best timescale. In turn, this implies that Earth’s climate system and carbon cycle responded slowly to changes in incoming solar radiation.