The next #GeologyOfTheNationalParksThroughPictures is for Mount Rushmore National Memorial. DYK that the mountain is carved from a 1.6 billion year old granite called the Harney Peak Granite that forms…

For more info: www.thegeologypage.com/2026/02/geol...

#geology #nationalparks #mountrushmore

For my next #GeologyOfTheNationalParksThroughPictures is Bighorn Canyon NRA in MT and WY. The Bighorn River which forms the crux of the park contains many entrenched meanders…

More info: www.thegeologypage.com/2026/01/geol...

#Geology #NationalParks