40Ar/39Ar Evidence for Middle Proterozoic (1300-1500 Ma) Slow Cooling of the Southern Black Hills, South Dakota, Midcontinent, North America: Implications for Early Proterozoic P-T Evolution and Posttectonic Magmatism

Tectonics- United States

doi 10.1029/97tc01629

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American Geophysical Union (AGU)


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