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This article suggests that the most likely transportation system of the sandstone across the continent would have been a river system. Could it have been due to tectonic movement instead? Edward B. FanUpper Marlboro, Md. Both Utah and the Appalachians are on the North American plate, so there’s no tectonic boundary between them. Sediments from […]
- Earth
Long Ride West: Many western sediments came from Appalachians
Much of the material in several thick layers of sandstone in the western United States originated in the Appalachians.
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Dyslexia’s DNA Clue: Gene takes stage in learning disorder
For the first time, scientists have identified a gene that appears to influence the development of at least some cases of dyslexia.
