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Research News
By probing the rock beneath the Ural Mountains with artificial seismic waves, an international team of researchers has drawn a portrait of the mountains' deep underpinnings. As they report in this issue (beginning on page 220), their deep cross section reveals why the Urals, which mark the 250-million-year-old suture between Europe and Asia, never rifted apart again. Unlike most continental bonds, the Urals are built on strong, thick crust.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)