Black National Park Service/US Geological Survey


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The forces that have shaped this region include collisions between continents, extension that stretched and fractured the Earth’s crust, volcanic eruptions, inundation by tropical seas, growth and decline of great deserts and lakes, and finally, sculpting of the land by water and wind. Evidence of these processes is dramatically displayed in Lake Mead National Recreation Area.

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PLATE TECTONICS ROCKS AND MINERALS GEOLOGIC TIME GEOLOGIC MAPS GEOLOGIC GLOSSARY
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Geology of Lake Mead NRA home | US Geological Survey home
National Park Service home | Lake Mead NRA home
Education resources | Technically speaking
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| USGS Geology in the Parks home | NPS Park Geology Tour home |

This site is a cooperative project of the
US Geological Survey Western Earth Surface Processes Team
and the National Park Service.

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http://www.nature.nps.gov/grd/usgsnps/lmnra/lmnra1.html
This SITE was last updated on 7/24/00

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