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Articles
Geologists Get Together to Dissect Earth's Thin Skin
At the annual meeting of the Geological Society of America in Boston during late October, Earth's crust came in for close scrutiny. One surprise was its age: Chemical and isotopic evidence suggested the crust formed soon after the planet did. Participants also discussed features of today's crust, including a horizontal slice beneath San Francisco and the possibility that a particular kind of crustal stretching, long envisioned, may not actually take place.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)