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History
- Published online August 14, 2020.
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© 2020 American Journal of Science
Author Information
- * Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125 USA
- ** Department of the Geophysical Sciences, The University of Chicago, 5734 S. Ellis Avenue, Chicago, Illinois 60637 USA
- *** Department of Geology and Environmental Earth Science, Miami University, Oxford, Ohio 45056 USA
- ↵† Corresponding author: ingalls{at}psu.edu