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:

  1. This must be quite a sight!

    My stones are here.

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

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

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

    ReplyDelete