Earth's outer crust Geologists Time and rock units Geologic map What are rocks and minerals? Chemical elements Minerals Rocks Igneous rocks Extrusive or volcani

In 'Texas Rocks and Minerals: An Amateur's Guide,' Roselle M. Girard provides a comprehensive overview of the geology of Texas, focusing on the various rocks an

Geo-Texas succeeds in bringing together astronomy, geology, meteorology, oceanography, and environmental studies in a highly informative, one-of-a-kind guide to