Articles | Volume 11, issue 9
Clim. Past, 11, 1181–1195, 2015
https://doi.org/10.5194/cp-11-1181-2015

Special issue: Climatic and biotic events of the Paleogene

Clim. Past, 11, 1181–1195, 2015
https://doi.org/10.5194/cp-11-1181-2015

Research article 23 Sep 2015

Research article | 23 Sep 2015

Astronomical calibration of the geological timescale: closing the middle Eocene gap

T. Westerhold et al.

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Short summary
Testing hypotheses for mechanisms and dynamics of past climate change relies on the accuracy of geological dating. Development of a highly accurate geological timescale for the Cenozoic Era has previously been hampered by discrepancies between radioisotopic and astronomical dating methods, as well as a stratigraphic gap in the middle Eocene. We close this gap and provide a fundamental advance in establishing a reliable and highly accurate geological timescale for the last 66 million years.