From Gondwanaland, with Love: The Tale of How Boston Got Its Rocks

The rocks on which the city of Boston was built did not form as part of North America. They formed about 600 million years ago, at the South Pole, as the northern coast of a supercontinent called Gondwanaland. Boston’s journey from the South Pole to its current location traces the world’s geologic history over that period of time, including the emergence of animal life as we know it, the formation and destruction of Pangaea, and the rise and fall of the dinosaurs. More than that, though: the history of our understanding of Boston’s journey illustrates how geologists think about their world, and how their ideas have changed over the last 150 years in one of science’s great revolutions.

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