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geological dictionary

Geology and Earth Science Terms and Definitions

Consult our geology dictionary for definitions, images and short articles about the most commonly used geological terms.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Click on a letter to find the definition of a geological term.

Sliding Rocks
Sliding rocks at Racetrack Playa
Racetrack Playa's Sliding Rocks: How these rocks slide across a dry lake bed is a mystery.

Volcano articles
Volcanoes: All of our volcano articles and the best volcano information on the web.

Meteorite Photos
Meteorite photos and information
What Are Meteorites? Learn about meteorites. Excellent photos!

Yosemite Rockfall
Photo sequence of a rock fall at Yosemite
Yosemite Rockfall: Photo sequence of a spectacular fall and debris avalanche.

Earth at Night
Earth at night, an electricity use map of the world
Earth at Night: NASA's world map of electricity use.
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