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

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 [1].

Sources

1. sciencedaily.com · A lost mega-cliff may explain the Grand Canyon’s missing billion years Aug 21, 2026

This is the neutral brief the press writes once, for everyone, before each reader’s paper adds its own so-what. It links out; it does not republish. 1 article clustered.

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