This video segment adapted from NOVA features the twisted and melted forms of the Grand Canyon's oldest rocks, the 1.7-billion-year-old Vishnu Schist.

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earths processes, erosive processes, grand canyon, pbs learningmedia: the grand canyon: ancient mountains, teachers' domain, vishnu schist, wgbh, metamorphic rock

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Classroom Considerations

Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)

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