Basin-Range Volcanoes

This interactive map of the Basin-Range Province reveals information about the youngest volcanic features associated with the region.

The links above to other interactives and animations offers much detail about basin-range features.


VIEW the interactive in a separate tab, by clicking on "Open Resource". (Note some browsers lack the plugins for rollovers.)

OR click Download All.  AFTER downloading, you can Open either:

  •  by using Flash player, or
  •  by clicking File > Open from within your browser, find the file on your computer, and it should open as an interactive file. 


Rolling over red-triangle "Active Volcanoes" buttons reveals:

  • Location
  • Eruption history
  • Extent
  • Miscellaneous facts

Level: Novice

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Interactive map reveals seismology, geology, and geologic history of the midwest.

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This interactive map of the Basin and Range Province reveals earthquakes, faults, hazards, volcanoes, mines, and National Parks.

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Over most of the last 30 million years, movement of hot mantle beneath the region caused the surface to dome up and then partially collapse under its own weight, as it pulled apart. Currently, there is very little actual stretching going on, and the small amount is concentrated on the Western and Eastern edges of the Basin and Range.

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During Basin & Range extension, the plates pull apart, the mantle rises and melts due to lower pressures near the surface. The style of eruption depends on how long the magma sits in the crust and undergoes processes such as crystallization and melting and assimilation of wall rock.

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As extension and uplift occur, erosion and sedimentation happen simultaneously but at slower rates. As extension slows down, erosion and sedimentation can overcome mountain building.


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