(Photo © Gigi Cohen)
Dr. Stephen R. Meyers
Vilas Distinguished Professor
Department of Geoscience
Ph.D., Northwestern University, 2003
Paleoclimatology & Paleoceanography, Quantitative Stratigraphy, Sedimentary Geochemistry, Computational Statistics & Data Analysis
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(Photo © Gigi Cohen)
Astrochron: A Computational Tool for Astrochronology
The latest public beta of Astrochron (version 0.6.6) is available for download from CRAN.
If you use Astrochron, please cite it as:
Meyers, S.R. (2014). Astrochron: An R Package for Astrochronology. https://cran.r-project.org/package=astrochron
For more information about Astrochron, please go HERE.
IN THE NEWS:
Check out write-ups on our recent Nature paper "Theory of chaotic orbital variations confirmed by Cretaceous geological evidence" at UW-Madison News, Popular Science, and Nature.
Scientific American has also produced a "60-SECOND SCIENCE" podcast on the study.
Important: If you are wondering whether this paper has anything to do with recent climate change, please see the news analysis website Climate Feedback for commentary.
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.
The Global Boundary Stratotype
Section and Point (GSSP) dedication ceremony on October 25, 2013 at Lake
Pueblo State Park (Colorado) was a component of award NSF-EAR 0959108, which created a new intercalibrated
radioisotopic and astrochronologic time scale for the Cenomanian-Turonian boundary interval. Clockwise from left: (1) installation of the "Golden Spike" marking the Late Cretaceous
Cenomanian-Turonian boundary (dated at ~94 million years ago); (2) view from the "Golden Spike" (photo courtesy M. Leckie);
(3) with colleagues Brad Singer (UW-Madison, left) and Brad Sageman (Northwestern Univ., center), collaborators
on the project (photo courtesy B. Sageman); (4) one of several panels created for the GSSP display.
Page last updated April 29, 2017
Unless otherwise noted, all content © S. Meyers