Can Rocks Grow?
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Under the sea, some rocks do grow, albeit very slowly. CREDIT: James Brune |
Rocks don't eat, drink, or take their vitamins, but they do grow.
Observing the process, though, is less interesting than watching paint dry. Rocks called iron-manganese crusts grow on mountains under the sea. The crusts precipitate material slowly from seawater, growing about 1 millimeter every million years.
Your fingernails grow about the same amount every two weeks.
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