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USGS · 70210406

Ar40/Ar39 age spectrum dating of biotite from Middle Ordovician bentonites, eastern North America

Michael J. Kunk·John F. Sutter
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Michael J. Kunk, John F. Sutter. 1984. Ar40/Ar39 age spectrum dating of biotite from Middle Ordovician bentonites, eastern North America. https://pubs.usgs.gov/publication/70210406

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