At Goblin Valley State Park on the southeast side of the San Rafael Swell, morning sun gives Wild Horse Butte an ethereal glow. The butte exposes all four geologic units present in the park: the Entrada Sandstone and Curtis, Summerville, and Morrison Formations. These strata record profound changes in Utah’s geography during Middle and Late Jurassic time, including the existence of coastal sand dunes, inundation by a shallow inland sea, and then uplift, erosion, and sediment deposition in stream channels and flood plains.
You might also like
Popular Posts & Pages
- Glad You Asked: Ice Ages – What are they and what causes them?
- Rock & Mineral Collecting Sites
- GeoSights: Gandy Warm Springs, Northwestern Millard County, Utah
- Glad You Asked: Where can I collect landscaping rock on public land?
- Rocks and Minerals
- Glad You Asked: What are Moqui marbles?
- Glad You Asked: Igneous, Sedimentary, & Metamorphic Rocks
- Hazards Maps
Mission, Vision, Values
Mission: The Utah Geological Survey provides timely scientific information about Utah's geologic environment, resources and hazards.
Vision: All Utahns are aware of geologic and energy information, and use it to improve their lives.
Values: The generation and dissemination of geologic information. Excellence, integrity, and objectivity in everything we do. Responsible stewardship of Utah's geologic and energy resources. Free exchange of ideas and information in a spirit of cooperation. The worth and dignity of individuals. Providing prompt and courteous service to our customers.