As Earth ruptures, micas kink. These kink bands hide in rocks millions of years old, preserving evidence of past quakes.
micas
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Dusting Off the Arid Antiquity of the Sahara
New research on the geochemistry of Canary Islands paleosols shows that the Sahara has been an arid dust producer for at least 4.8 million years.
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Ancient Precipitation Reveals Clues About Mountains and Climate
By studying the chemical signatures of 300-million-year-old precipitation, researchers find evidence that the supercontinent Pangea contained peaks as tall as the European Alps.