11:37am November 13, 2012

“The key discovery was that history is written in rocks. “Ex libro lapidum historia mundi”— from the book of rocks comes the history of the Earth. More people are fascinated with plants and animals than are drawn to rocks, because plants and animals are living and dynamic, while rocks seem to lie there inert and unchanging. Rocks do change, but usually so slowly that few people notice the changes. It is precisely this sluggish, nearly static character that makes them good recorders of Earth history. Rocks remember the past.”

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