Tombolos-Stops-2

Rock Outcrop ** Air Temperature 43ºF Soil Temperature 48ºF GPS Coordinates 34 49.270 ’N, 83 43.345 ’W This sedimentary rock was along the side of the trail, it extruded out of the ground approx. 15 ft. high. This rock is an example of **mechanical weathering** which is the process of physical breakdown of a rock into smaller rocks of the same type (Discovering Physical Geography). More specifically, this rock has been eroded by the process of **frost wedging**. In frost wedging, water seeps into the crevasses of a rock then freezes and thaws causing the rock to expand and contract, cracking the rock, splitting it further apart. (Britannica). Not as dominant as the frost wedging, this rock has also suffered erosion due to plants. Plants can erode rocks when their roots grow though the rocks crevasses causing it crack (Discovering Physical Geography).
 * Stop 2

(//Discovering Physical Geography//. New York: Wiley, 2007. Print.) ("frost wedging." __Encyclopædia Britannica__. 2009. Encyclopædia Britannica Online. 29 Oct. 2009 <__**[]**__>.)

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