Brent Dalrymple is a notable American geologist and a professor emeritus at Portland State University. He is primarily recognized for his work in the fields of geology and geochronology, particularly in the development and application of the potassium-argon dating method, which is used to date volcanic rocks and early Earth history. Dalrymple's research has contributed significantly to our understanding of the geological time scale and the timing of various geological events.
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