Geologic Timeline of the Keweenaw
4.54-1.1 billion years ago
Let's imagine the story of the Earth in book form and every page represents 10 million years. Nowhere on Earth can we find this book in its entirety; it's almost as if the pages were ripped out and scattered across the globe. Geologists seek for these "missing pages" by "reading the rocks." Here in the Keweenaw, the first 343 pages out of the total 454 are missing. Luckily, geologists have found many of these "missing pages" in other parts of the world. Keweenawan rocks can't tell the story of the majority of Earth's history because the rocks that are here today are "only" about 1.1-1.0 billion years old.