Old Delta Sediments

The Bear River diverted into this area by lava flows, deposited a huge delta here mostly red clay, where it entered into a vast inland sea that covered much of Utah.

Some thousands of years ago, the shoreline here suddenly dropped following an enormous discharge into the Snake River. The inland sea then gradually receded until it became what we know as today as Salt Lake. Bear River then cut through its old sediments and eroded its delta into steep sides and gullies as you will see at this site.

You can see more of this erosion and cutting away by the Bear River as you head through the Oneida Narrows just East of this site following the Bear River.

Do not post the answers in your log or I will delete it. Email me the answers please.

To log this Earthcache as a Find Email me the Answers to the following questions:

1. The Sign Number.
2. How long ago did the shoreline here suddenly drop and discharge into the Snake River?
3. How wide is the valley here?
   (Make an educated guess as this isn’t on the sign. I would watch the Odometer as you start to head down the valley until you reach halfway then double it or you can drive the whole valley.)

• Take a picture of your group with your GPS to show you were there and post it in your log.
  Make sure you don't show the sign in the picture and give away the answers to the qustions or I will delete your log/picture. If you show the sign please edit the picture before hand to block out the answers. Thanks.