The sculpting of formations….. “fluted” Vishnu Schist

July 15, 2011
A woman in a grey shirt is holding a piece of cake with strawberry jam on it.
A large rock wall surrounds a body of water.

1.7 to 2-billion year old rock formation…. The “Vishnu Schist” is the oldest rock formation in the Grand Canyon. Also referred to as, the basement rocks of the Grand Canyon.

Photo Tom Blagden (tblgden@bellsouth.net)

Fluting  is a process of differential weathering and erosion by which an exposed well-jointed coarse-grained rock such as granite, gneiss or vishnu schist develops a corrugated surface of flutes; especially the formation of small-scale ridges and depressions by wave action.

  • fluting with respect to sedimentary action:
  • the process of forming a flute by the cutting or scouring action of a current of water flowing over a muddy surface.
  • scalloped or rippled rock surfaces.

This geology article is a stub. You can help Wikipedia by expanding it.

< Older Post

 Newer Post >

Share this post!

Check out our other Blogs!

A group of people are posing for a picture in the water

5 Tips for Bathing in the Colorado River

October 28, 2025
Learn how to bathe safely and comfortably in the Colorado River. Get quick tips for staying clean during your Grand Canyon rafting adventure.
Two deer are standing in a body of water.

Mule Deer in the Grand Canyon: Wildlife You’ll See on the River

October 13, 2025
Learn about Mule Deer in Grand Canyon National Park. Discover their behavior, diet, and where to see them during a Grand Canyon Dory or Ecology Expedition.
25 Fun Facts About the Grand Canyon

25 Fun Facts About the Grand Canyon (You Probably Didn’t Know)

September 30, 2025
Discover amazing and little-known Grand Canyon facts, from rare wildlife to ancient fossils. Learn the canyon’s secrets before your next adventure!
Show More