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2025-01-31 13:13:01
in reply to

SPA (Super Phat Arrow) on Nostr: Please don't waste time on that. This is so obviously geological. > Devils tower is ...

Please don't waste time on that. This is so obviously geological.

> Devils tower is composed of igneous rock, specifically a phonolite porphyry, which was intruded about 40.5 million years ago. As the magma cooled, it formed hexagonal columns, some up to 20 feet wide and 600 feet tall.
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