In 1869, John Wesley Powell was studying layers of rock in the Grand Canyon when he noticed an unconformity in the layers. Around a billion years were missing, and the problem turned out to be global.
Geology is a complex topic, but if there's one simple principle you can generally rely on it is the law of superposition, or that the youngest strata (or layers of rock or sediment) will be above the…
Artikel ini bersumber dari IFLScience pada March 1, 2026 at 6:14 PM.
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