Ever heard of the 'Great Unconformity'? Turns out, a massive chunk of Earth’s crust just vanished from the geological record, and scientists finally know why. During a period called 'Snowball Earth,' glaciers basically bulldozed 2-3 miles of rock off the planet’s surface! That rock? Most of it got washed out to sea. This explains why there’s a weird gap in ancient rocks all over the world—like at the Grand Canyon. Mind = blown! #ScienceMystery #Geology #EarthHistory #SnowballEarth #GreatUnconformity #Science