Anderson Area Artesian Earthcache # 3 EarthCache

This cache has been archived.

doobies: The previous owner has passed and the earthcache is no longer available.

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Hidden : 12/19/2006
Difficulty:
1 out of 5
Terrain:
1.5 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:




Be sure to bring a Gal. jug along, and a way to time it with you for this one.

The water in an artesian well flows from an aquifer, which is a layer of very porous rock or sediment, usually sandstone, capable of holding and transmitting large quantities of water. Artesian springs can occur in similar fashion where faults or cracks in the overlying impervious layer allow water to flow upward. Water from an artesian well or spring is usually cold and free of organic contaminants, making it desirable for drinking.

Artesian wells are deep-drilled wells through which water is forced upward under pressure. The water in an artesian well flows from an aquifer, which is a layer of very porous rock or sediment, usually sandstone, capable of holding and transmitting large quantities of water.



The geologic conditions necessary for an artesian well are an inclined aquifer sandwiched between impervious rock layers above and below that trap water in it. Water enters the exposed edge of the aquifer at a high elevation and percolates downward through interconnected pore spaces. The water held in these spaces is under pressure because of the weight of water in the portion of the aquifer above it. If a well is drilled from the land surface through the overlying impervious layer into the aquifer, this pressure will cause the water to rise in the well. In areas where the slope of the aquifer is great enough, pressure will drive the water above ground level in a spectacular, permanent fountain.

Artesian springs can occur in similar fashion where faults or cracks in the overlying impervious layer allow water to flow upward. Water from an artesian well or spring is usually cold and free of organic contaminants, making it desirable for drinking. In North America, the Dakota sandstone provides aquifers for an artesian system that underlies parts of the Dakotas, Montana, Wyoming, Kansas, Nebraska, and Saskatchewan and supplies great quantities of water to the dry Great Plains region. Many East Coast cities derive their water supplies from aquifers that are exposed along the edge of the Piedmont and dip downward toward the Atlantic coast.

The largest artesian system in the world underlies nearly all of Eastern and Southern Australia. Other important artesian systems serve London, Paris, and East Algeria.

The aquifer that supplies this well cannot be steep as Indiana does not have that many hills. But as you approach the well, you will see that the water is shot out at a high volume. The height would be nice to see, but as you approach the well, you will see the the structure of the well prohibits the water from shooting into the air. The only explanation for the high volume is that the aquifer must be huge.

To log this EarthCache, you must:

1.POST A CLEAR PICTURE OF YOU AND YOUR GPS 2. Email me your estimate of the rate, gallons perminute , at which the well is pumping out water. This can be done by bringing a one gallon jug, and a watch with a second hand. Then, you simply time how long it takes to fill the one gallon jug.


THIS EARTHCACHE WAS PLACED BY A
PLATINUM EARTHCACHE MASTER

Additional Hints (No hints available.)



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