U-Pb Isotopic Age of the StW 573 Hominid from Sterkfontein, South Africa

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Title:
U-Pb Isotopic Age of the StW 573 Hominid from Sterkfontein, South Africa
Series Title:
Science
Creator:
Walker, Joanne
Cliff, Robert A.
Latham, Alfred G.
Publisher:
American Association for the Advancement of Science
Publication Date:
Language:
English

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serial ( sobekcm )

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Abstract:
Sterkfontein cave, South Africa, has yielded an australopith skeleton, StW 573, whose completenesshas excited great interest in paleoanthropology. StW 573, or“Little Foot,”was found 25 meters belowthe surface in the Silberberg Grotto.238U-206Pb measurements on speleothems immediately aboveand below the fossil remains, corrected for initial234U disequilibrium, yield ages of 2.17T0.17 millionyears ago (Ma) and2:24þ0:09−0:07Ma, respectively, indicating an age for StW 573 of close to 2.2 Ma.This age is in contrast to an age of ~3.3 Ma suggested by magnetochronology and ages of ~4 Ma basedon10Be and26Al, but it is compatible with a faunal age range of 4 to 2 Ma.
Original Version:
Science, Vol. 314, no. 5805 (2006-12-08).

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University of South Florida
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This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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