Valles Caldera National Preserve, New Mexico
Summary
hikers on hill slope with valley and hills in background
The explosive volcanic activity that formed the giant crater (“caldera”) is due to silica-rich (granitic) magma formed as hot asthenosphere rises and melts crustal rocks along the Rio Grande Rift.
Tags
Date
1916 - 2020
Source
National Parks Gallery
Copyright info
Public Domain Dedication