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Potassium-argon dating

Potassium-argon dating

H170/0004

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Credit

JOHN READER / SCIENCE PHOTO LIBRARY JOHN READER / SCIENCE PHOTO LIBRARY

Caption

Potassium-argon dating method developed at the University of California, Berkeley enables geologists to determine the absolute age of volcanic rocks. This method of dating may be used by palaeoanthropologists to discover the precise age of the deposits, in which their finds (fossil hominids) are made. Such a technique was first used at Olduvai Gorge, Tanzania.

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