Marysvale Volcanic Field
| Marysvale volcanic field | |
|---|---|
Indian Peak caldera complex, and Caliente, Three Creeks, Mount Belknap, Big John and Monroe Peak calderas.
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| Highest point | |
| Coordinates | 38°30′N 112°30′W / 38.500°N 112.500°WCoordinates: 38°30′N 112°30′W / 38.500°N 112.500°W |
| Geography | |
 Marysvale volcanic field
Utah
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| 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.
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