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History
- Published online June 10, 2019.
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© 2019 American Journal of Science
Author Information
- * Geological Survey of Canada, Ottawa, Ontario, Canada K1A 0E8
- ** Geology Department, Middlebury College, Middlebury, Vermont 05753
- *** Department of Earth Sciences, University of New Hampshire, Durham, New Hampshire 03824
- § Isotope Geochemistry and Geochronology Research Centre, Carleton University, Ottawa, Ontario, Canada K1S 5B6
- ↵† Corresponding author: ian.honsberger{at}canada.ca