Maurizio Petrelli

Lava trails (pictured) from the 2021 Tajogaite eruption in La Palma. Marco Specht/Shutterstock (no reuse)

Why volcanic crystals are black boxes for tracking magma’s journey to the Earth’s surface

By observing the tree-ring-like growth records present in volcanic crystals, geologists are able to track volcanic activity and reconstruct the steps leading up to eruptions.

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