Marysvale volcanic field
Marysvale volcanic field | |
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File:UtahVolcanism.JPG
Indian Peak caldera complex, and Caliente, Three Creeks, Mount Belknap, Big John and Monroe Peak calderas.
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Highest point | |
Coordinates | Lua error in package.lua at line 80: module 'strict' not found. |
Geography | |
Location | Utah, United States |
Geology | |
Age of rock | Middle Cenozoic |
Mountain type | Volcanic field |
The Marysvale volcanic field is located in southwestern Utah, United States.
One of the largest volcanic fields in the western United States, the Marysvale straddles the Colorado Plateau-Great Basin transition zone. Most igneous rocks belong to a middle Cenozoic (~32 to 22 million years old) calc-alkaline sequence, although about 5% are related to an upper Cenozoic (23 million years to Holocene) bimodal (basalt and rhyolite) sequence. The Marysvale contains a variety of volcanic features, including stratovolcanoes, calderas, lava domes, and cinder cones.
The field is an example of intraplate volcanism; its earlier deposits are thought to be related to Farallon plate subduction, while the later bimodal assemblage (especially the basalts) have been linked to Basin and Range extension.
Notable calderas
Name | Size | Coordinates | Age |
Monroe Peak Caldera | 20 x 16 km | Lua error in package.lua at line 80: module 'strict' not found.[1] | 23 Ma |
Big John Caldera | 10 x 6 km | Lua error in package.lua at line 80: module 'strict' not found.[1] | 24 Ma |
Mount Belknap Caldera | 17 x 13 km | Lua error in package.lua at line 80: module 'strict' not found.[1] | 19 Ma |
See also
- Geology of the Bryce Canyon area
- Large volume volcanic eruptions in the Basin and Range Province
- Tushar Mountains, Delano Peak
References
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