|
Looking to the west at where the sea used to be:
The Sedona area was at sea bottom 330 million years ago, and the shells of sea creatures formed a layer of limestone that underlies the area today, called the Redwall limestone because of its color, the result of iron oxide deposited in the rocks by water in later eras. The Supai Group of red sandstone, deposited when the area was a floodplain about 300 million years ago, sits atop the Redwall Formation, to a depth of about 600 feet. On top of that is a layer called the Hermit Formation, about 280 million years old, made of sandstone, mudstone and conglomerate.
The Sedona area was at sea bottom 330 million years ago, and the shells of sea creatures formed a layer of limestone that underlies the area today, called the Redwall limestone because of its color, the result of iron oxide deposited in the rocks by water in later eras. The Supai Group of red sandstone, deposited when the area was a floodplain about 300 million years ago, sits atop the Redwall Formation, to a depth of about 600 feet. On top of that is a layer called the Hermit Formation, about 280 million years old, made of sandstone, mudstone and conglomerate.