It's Not my Fault!! EarthCache
Hidden : 8/23/2010
Difficulty:
1.5 out of 5
Terrain:
1.5 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:


Billions of years ago after the earth was formed from material of our solar system it was a molten mass that hadn't yet cooled into the form we know it as today. As the earth collected water it started cooling and as the cooling process continued it formed plates. These plates (known as tectonic plates) are always actively sliding with speeds of 0-100mm/year. The plates though are not all moving in the same direction and because of that the occasionally collide and slide against on another. As the tectonic plates interact with each other they build up stress and massive amounts of energy. The release of this energy is the cause of earthquakes. The interaction between two plates is called a boundary.

Alternately any movement that happens within a tectonic plate can cause fault lines. A fault line is a surface indication that two separate masses are interacting with each other. There are a three main ways land masses can interact at a fault lines.

Strike-slip: is where two land masses are sliding horizontally against each other sort of like rubbing your hands together.
Dip-slip: is where one land mass is driving another underneath itself.
Oblique-slip: is the combination of the two previous movements where the land masses are but traveling in a horizontal and vertical direction.

Most common with most fault lines is the presence of folds on either side of the fault plane. As the two sides interact with each other they cause the rock to compress together and because rock is so rigid it causes it to flex and fold in almost an accordion fashion. The folds typically are closer together and at tighter angles the closer you get to the fault plane.
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In the case of the Fredericton fault line it's evolution progressed from a Dip slip where the northern landmass was riding over the south, to a strike slip. As seen in this figure.
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When classifying folds there are three parts to a fold:
One is the Anticline the upwards facing "point".
Two is the Syncline or the downward facing "point".
Third is the limb arm or the relatively straight section between the two "points"

At the posted coords you can see clearly a full cycle of folds present which includes two anticlines and a syncline.

In order to log this Earthcache as found please answer this question and e-mail me via my profile.

What is the distance between the two anticlines?
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