vintage and contemporary postcards and stamps from around the world


12 June 2025

sandstone

Colorado River doing its best incised meander.  The rock is Navajo Sandstone and the drop to the river is 1,000 feet.  The best time to visit - and see the colours - is at sunrise or sunset. 

60 million years ago, this land was relatively flat, then about 5.5 million years ago geological forces pushed the land upwards.  A couple hundred miles away is the Rainbow Bridge, also of Navajo Sandstone.  What makes this a bridge rather than an arch is that it was formed from water cutting through sandstone.

5 comments:

Mail Adventures said...

This must be quite a sight!

My stones are here.

Joy said...

I do love sandstone and on that scale it is quite mesmerising.
My geology is here

Lisa said...

Mine:
https://lisasgardenadventureinoregon.blogspot.com/2025/06/thursday-postcard-hunt-geologic-details.html

marina said...

Rock show! (as they say on the Big Bang Theory TV show). Both are a marvel!

Linda's Relaxing Lair said...

Beautiful sight.