GC2F8VZ Silver Creek Erosion and Deposition EC (Earthcache) in Indiana, United States created by geocachescout317, Platinum Earth Cache Master

This cache is temporarily unavailable.

Geocaching HQ Admin: It has now been more than 30 days since Geocaching HQ asked the owner of this EarthCache to post an Owner maintenance log to confirm they are actively monitoring the cache page.

Since no Owner maintenance log has been posted, this EarthCache is now temporarily disabled. Geocaching HQ will archive the cache if the cache owner does not post an Owner maintenance log and re-enable the cache in the next 30 days.

More information in the Help Center

GC2F8VZ ▼

A cache by geocachescout317, Platinum Earth Cache Master Message this owner

Hidden : 9/16/2010

Difficulty:

Terrain:

Size: Size: other (other)

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:

Earth cache located downstream from downtown Clarksville, IN. You will need a clear container (ex. jar, tubber ware container, bag, etc...) for the logging questions.

The coordinates will take you to a small swift stream known as Silver Creek. This little creek cuts through a thick layer of devonian Jeffersonville Limestone. This limestone was deposited over 450 million years ago where much of where you are now standing was a shallow, calm sea about 10 feet deep.
What is erosion?- Erosion is the process by which natural forces move weathered rock and sediment from place to place.
What is sediment?- Sediment is anything that is moved my erosion. It usually includes silt, small pebbles, decaying plant matter, fish waste, etc.
What is deposition?- Deposition is the process by which erosion lays down sediment in a new location. In front of you is the area where Silver Creek dumps into the Ohio River. As a river slows down, its ability to carry sediment decreases, which results in the stream depositing the sediment. This forms a highly fertile delta, where you will find many plants growing during the dry season due to a high amount of nutrients deposited here.
What is alluvium?- Alluvium is any rock that is picked up and carried by erosion. It can range from small grains of sand to gigantic boulders.
Glaciers
Sometimes, the climate of a region drops, and a large, heavy ice sheet moves very slowly across the land, carving and scraping its way along. It is this force that formed the Ohio River Valley. As the ice moves along, rocks and glacial debris is frozen to the bottom of it. This is called till. Till is any alluvium moved by a glacial force.
What is the gradient of a stream?-
As glaciers melt when the climate warms back up, the water forms runoff collections, which eventually find their way to the nearest body of water. When this happens, a stream is formed. The gradient of a stream is its ability to carry sediment along swiftly. For example, the, lower the gradient level, the slower, warmer, and dirtier the stream is. The higher the gradient, the swifter, cooler, and clearer the stream is. There are many factors that play out a stream's gradient level, but the main ones are: -oxygen levels
-speed the water is flowing
-depth (the shallower the stream, the faster the current)
-type of sediment carried
-temperature

TO LOG THIS EARTH CACHE AS A FIND, YOU MUST:
-Take a photograph of yourself and your GPS (or just your GPS) at the area where Silver Creek dumps into the Ohio River.
AND TO DEMONSTRATE THE EDUCATIONAL VALUE OF THI EARTH CACHE, E-MAIL ME THE ANSWERS TO THE FOLLOWING QUESTIONS VIA MY PROFILE:
1. Use the container you brought with you and take a sample of the water. Look closely at the sample and describe what you see. How clear is it? Is is muddy? What about sediment? What is floating in it? What sinks to the bottom of the container?
2. Using your data from question number 1, infer, draw a conclusion, and explain in your opinion what the gradient of this stream is and why you think that is.
3. What is the difference between alluvium and till?
4. What layer or rock does Silver Creek cut through?
5. What force carved the Ohio River Valley?

geocachescout317 is a Platinum Earth Cache Master

Good luck, and happy hunting!

Additional Hints (No hints available.)

This cache is temporarily unavailable.

Watch

Geocache Description:

Attributes

Inventory

Bookmark Lists

Silver Creek Erosion and Deposition EC EarthCache

This cache is temporarily unavailable.

Watch

Geocache Description:

Attributes

Inventory

Bookmark Lists