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Synchronizing Rock Clocks of Earth History

Kuiper, K. F., Deino, A., Hilgen, F. J., Krijgsman, W., Renne, P. R., Wijbrans, J. R.·2008·Science
DOI 10.1126/science.1154339
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Abstract

Calibration of the geological time scale is achieved by independent radioisotopic and astronomical dating, but these techniques yield discrepancies of ∼1.0% or more, limiting our ability to reconstruct Earth history. To overcome this fundamental setback, we compared astronomical and 40 Ar/ 39 Ar ages of tephras in marine deposits in Morocco to calibrate the age of Fish Canyon sanidine, the most widely used standard in 40 Ar/ 39 Ar geochronology. This calibration results in a more precise older age of 28.201 ± 0.046 million years ago (Ma) and reduces the 40 Ar/ 39 Ar method's absolute uncertainty from ∼2.5 to 0.25%. In addition, this calibration provides tight constraints for the astronomical tuning of pre-Neogene successions, resulting in a mutually consistent age of ∼65.95 Ma for the Cretaceous/Tertiary boundary.

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Metadata

Authors
Kuiper, K. F., Deino, A., Hilgen, F. J., Krijgsman, W., Renne, P. R., & Wijbrans, J. R.
Affiliations
Faculty of Geosciences, Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, Netherlands.
Venue
Science
Publisher
American Association for the Advancement of Science (AAAS)
Published
2008-04-25
Volume
320
Issue
5875
Pages
500-504
ISSN
  • 0036-8075
  • 1095-9203
DOI
10.1126/science.1154339
Cited by
1,345
References
0
Language
en

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CoChat. (2026). Citation check: Synchronizing Rock Clocks of Earth History. https://app.cochat.ai/papers/10.1126/science.1154339
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Kuiper, K. F., Deino, A., Hilgen, F. J., Krijgsman, W., Renne, P. R., & Wijbrans, J. R. (2008). Synchronizing Rock Clocks of Earth History. Science. https://doi.org/10.1126/science.1154339