What happened to a huge chunk of Earth’s history? – The Great Unconformity

Great Unconformity

There exists something in geology known as “The Great Unconformity”. This is the observation that there appears to be a gap that appears to consistently exist for specific geological layers around the planet. What exactly is this Great Unconformity? The first observation of this was made in 1869 by John Powell at the Grand Canyon. … Read moreWhat happened to a huge chunk of Earth’s history? – The Great Unconformity