News of the WeekGeology

A Trace of the Earliest Plate Tectonics Turns Up in Greenland

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Science  23 Mar 2007:
Vol. 315, Issue 5819, pp. 1650-1651
DOI: 10.1126/science.315.5819.1650b

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Summary

A group of geologists has discovered the earliest known remnants--by billions of years--of plate tectonics, the large-scale movement of Earth's crust, they report on page 1704 of this issue of Science. (Read more.)