Texas GeoSign Resources

Texas Through Time

Explore the landscapes, rocks, and resources of Texas and 1.7 billion years of Earth history in Texas Through Time by noted geoscientist Thomas E. Ewing. Texas Through Time contains more than 500 full-color photos, illustrations, and maps, all showing the state’s development through geologic “deep time.”



The Geologic Wonders of Texas web module was created as an online resource for students and families to learn about the earth across the State of Texas. Descriptions include significant geological features such as rocks and fossils, geologic age, additional resources, answers to frequently asked questions, and lesson plans.