(Photo © Gigi Cohen)

Dr. Stephen R. Meyers
Associate Professor
Department of Geoscience

Ph.D., Northwestern University, 2003

Research Areas:
Paleoclimatology & Paleoceanography, Quantitative Stratigraphy, Sedimentary Geochemistry, Computational Statistics & Data Analysis

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The 12th International Conference on Paleoceanography, Utrecht, September 2, 2016

Astrochron: A Computational Tool for Astrochronology

The latest public beta (version 0.6.5) is available for download from CRAN.

If you use Astrochron, please cite it as:
Meyers, S.R. (2014). Astrochron: An R Package for Astrochronology. http://cran.r-project.org/package=astrochron

See these instructions for the installation of R and Astrochron: PDF

See this graphic for a summary of the functions available in Astrochron: PDF

Version 0.6.5 of Astrochron is a minor upgrade, with assorted modifications to improve performance.


My research program primarily addresses three topics: the mechanisms of climate change, the controls on the global carbon cycle, and the measurement of geologic time. These subjects are fundamentally interrelated, as there are linkages between climate and the carbon cycle, while the establishment of reliable chronologies is essential for evaluating climate forcing mechanisms and determining rates of climatic and biogeochemical change in Earth's past. My interdisciplinary approach to investigating these topics integrates data (primarily geochemical, sedimentologic and stratigraphic) with novel modeling and statistical techniques, to unravel the history of the climate system, oceans and geosphere.

While I am involved in a wide range of geoscience research, at present I am especially active in the development of quantitative approaches for the construction and evaluation of astronomical time scales, the intercalibration of astrochronologic and radioisotopic data, and the evaluation of Earth System responses to orbital-insolation changes.


  • CAREER: Deciphering the Beat of a Timeless Rhythm - The Future of Astrochronology, Stephen Meyers (PI), NSF Sedimentary Geology and Paleobiology Program. (view abstract)
  • Collaborative Research: Evolution of the Climate Continuum- Late Paleogene to Present, Stephen Meyers (Lead-PI) and Linda Hinnov (Co-PI), NSF Paleo Perspectives on Climate Change (Lead program Marine Geology and Geophysics). (view abstract)
  • Collaborative Research: Integrating Radioisotopic and Astronomical Time Scales for the Cretaceous, Bradley Singer (Lead-PI), Stephen Meyers (Co-PI), and Bradley Sageman (Co-PI), NSF Sedimentary Geology and Paleobiology Program. (view abstract)


    Kristin Larkins (M.S., 2009) THESIS

    Bo He (M.S., 2010) THESIS

    Dylan Malynn (M.S., 2011) THESIS

    Wesley Ingram (Ph.D., 2013) DISSERTATION

    Miao Du (M.S., 2013)

    Wasinee Aswasereelert (Ph.D., 2014)

    M'bark Baddouh (Ph.D., 2016)

    Lindsey Shanks (M.S., 2016)

    Chao Ma (M.S., 2012; Ph.D., 2016)

    Andrew Walters (M.S., 2013; now a Ph.D. Candidate)

    Page last updated September 8, 2016

    Unless otherwise noted, all content © S. Meyers