Along 1,100 kilometers, from Mexico to Costa Rica, lies the Central American volcanic arc, where the variety of magma types make for a geological paradise. By Pablo Fonseca Q. / Knowable Magazine ...
Continental clues: Modern continental rocks carry chemical signatures from the very start of our planet’s history, challenging current theories about plate tectonics. Researchers have made a new ...
Cambrian Sawatch sandstone from the Sauk Transgression caps 1 billion-year-old Pikes Peak granite (pink) marking the Great Unconformity in a roadcut in Manitou Springs, Colorado. Around 510 million ...
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