Skip to Content

This cache has been archived.

Morgue: Time to archive this cache to allow a local to make a new Earthcache for the newly uncovered fossils in the bed as a result of the 2008 flood!

Oldfatguy in Cedar Rapids should be creating a new Earthcache in the area soon!

Happy Geocaching!

More
<

Back to the Devonian Earthcache

Hidden : 02/06/2005
Difficulty:
1 out of 5
Terrain:
1 out of 5

Size: Size: not chosen (not chosen)

Join now to view geocache location details. It's free!

Watch

How Geocaching Works

Please note Use of geocaching.com services is subject to the terms and conditions in our disclaimer.

Geocache Description:

This Earthcache is in Devonian Fossil Gorge

In 1993, record flooding resulted in upto 5 feet of water flowing over the Lake Coralville dam spillway. After the flood waters receded, it was discovered that 15+ feet river bottom and limestone downstream of the dam spillway had been washed away revealing 375 million year old bedding planes with diverse and abundant fossils. An outdoor interpretive facility on the site was completed in 2001. Part of this facility is the placing of hexagonal (six-sided) bronze plaques, called discovery points, have been placed at various points of interest throughout the site. You will find a brochure showing the discovery point locations in the entry plaza. In order to log this cache you need to answer the following questions about the fossil site via an email to me (please do not post your answers in your log):

1. Study the various intrepetive markers at the site and complete this sentence: "Limestone is a __________ rock that forms mainly mainly from calcium carbonate derived from the tissue skeletal hard parts of _________ animals and plants."

2. Please define the two words used to complete question one. Hint: a good dictionary is always helpful and educational!

3. The fossils in the gorge prove that this area of Iowa was not always prairie land as it is today, but was in fact millions of years ago, ____________. (A) a tropical rainforest, (B) an arid desert (C) a shallow ocean (D) a steep mountain

4. Study the fossils and identify one of the creatures or plants found in the gorge. Please describe the fossil and what you think its life would have been like 375 million years ago.

Please email your answers to these four questions to me via Geocaching.com when you log your find. Enjoy the area and hope that you learned something new about fossils and the planet that we all share as our home.

If you have time, drop by the visitors center just south of the dam. The hours of operation are Monday - Friday, 8:00am - 4:00pm Saturday & Sunday, summer hours 10:00am - 5:00pm

Additional Hints (No hints available.)



Return to the Top of the Page

Reviewer notes

Use this space to describe your geocache location, container, and how it's hidden to your reviewer. If you've made changes, tell the reviewer what changes you made. The more they know, the easier it is for them to publish your geocache. This note will not be visible to the public when your geocache is published.