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I have touched on this for travertine, but realize that I had yet to mention the quarry process for granite. Here is some background on the Origins of granite:

“Granite is an igneous rock and is formed from magma. Granitic magma has many potential origins but it must intrude other rocks. Most granite intrusions are emplaced at depth within the crust, usually greater than 1.5 kilometres and up to 50 km depth within thick continental crust. The origin of granite is contentious and has led to varied schemes of classification. Classification schemes are regional; there is a French scheme, a British scheme and an American scheme. This confusion arises because the classification schemes define granite by different means. Generally the ‘alphabet-soup’ classification is used because it classifies based on genesis or origin of the magma.”

For more background information on granite, check out the source of the above snippet at WIKIPEDIA.

Check out some interesting info regarding the history of granite mining in Vermont at the University of Vermont’s website, HERE. Go Catamounts!

For anyone that wonders what happens with the gaping hole in the earth after the quarry is shut down? Check out this picture from an abandoned quarry in Vermont. The picture comes from a series on Flowerseast.com and are taken by Edward Burtynsky. For more great pictures covering a variety of materials click HERE.

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Marc McPherson