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Geology is the study of the Earth, the materials of which it is made, the structure of those materials, and the processes acting upon them. It includes the study of organisms that have …

Geology Dictionary Geology Dictionary - contains thousands of geological terms with their definitions.

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Photographs and information for a large collection of igneous, metamorphic and sedimentary rocks. Geology.com

Geology Tools Geology Tools - Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.

Detailed topographic maps and aerial photos of California are available in the Geology.com store. See our state high points map to learn about Mt. Whitney at 14,494 feet - the highest point in …

A statewide map of Ohio showing the major lakes, streams and rivers. Drought, precipitation, and stream gage information.

The Geology.com store offers inexpensive rock collections that can be mailed anywhere in the United States or U.S. Territories. Mineral collections and instructive books are also available.

Detailed topographic maps and aerial photos of Louisiana are available in the Geology.com store. See our state high points map to learn about Driskill Mtn. at 535 feet - the highest point in …