The Great Unconformity And Earth's Missing Billion Years May Have A New Explanation - IFLScience
science 2026/03/01 18:14:00

The Great Unconformity And Earth's Missing Billion Years May Have A New Explanation - IFLScience

Source:IFLScience
Author:James Felton

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.