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The distribution of thorium, uranium, and potassium in Archean granites from northeastern Minnesota
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1978
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Northeastern MinnesotaVolcanologyEngineeringEarth ScienceRegional GeologyGeological DataHigh Temperature GeochemistryGeochronologyTypical Curvilinear IncreaseNorthern MinnesotaGeographyK DistributionsGeologyMineral DepositTectonicsArchean GranitesGeochemistryThermochronologyIgneous PetrologyPetrologyMineral Geochemistry
The investigation of U, Th, and K distributions in 2700 m.y. old granitic rocks from northern Minnesota reveals the typical curvilinear increase in Th and U on Th and U versus K plots observed in most younger calc-alkaline suites.