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Science 26 September 2008:
Vol. 321. no. 5897, p. 1755
DOI: 10.1126/science.321.5897.1755a
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News of the Week

GEOCHEMISTRY:
Geologists Find Vestige of Early Earth--Maybe World's Oldest Rock

Richard A. Kerr

On page 1828 of this week's issue of Science, geologists report the discovery of rock in northern Quebec on Hudson Bay that records the existence of the earliest crust. The Canadian rock may also be the oldest known rock by 300 million years.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)