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A lost mega-cliff may explain the Grand Canyon’s missing billion years

All Top News -- ScienceDaily Aug 21, 2026 · 3:43 AM 👁 0 views ❤ 0 likes

A colossal cliff system created as the supercontinent Rodinia broke apart may have exposed the heart of the Grand Canyon nearly a billion years before the Colorado River carved it. The ancient landscape could also help explain why enormous sections of North America’s geological record appear to be missing.

Read full story at All Top News -- ScienceDaily ↗

A lost mega-cliff may explain the Grand Canyon’s missing billion years

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