Richard I Gibson | Substack

Richard I Gibson

@richardigibson

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I'm a geologist and historian living in Butte, Montana USA. Author of the History of the Earth Perpetual Calendar, What Things Are Made Of, and Butte Rocks.

622 subscribers

The Geologic Column

The Geologic Column

By Richard I Gibson

Geology newsletter by Richard I. Gibson. Anything about geology, with a focus on minerals and tectonics.

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