When I was young I had an inflatable clown with weights on the bottom, so you could administer whatever childhood battering you cared to, and the clown would bob back upright. I recently read about a feature of the Deer Isle Granite that got me thinking about that clown.
The granite that underlies Deer Isle is long. It extends from Flye Point on the Blue Hill Peninsula to the southern tip of Stonington in the south. While the rock is all clearly Deer Isle Granite, it is not homogenous. Going to Naskeag Point on the mainland presents a deep pink, while a visit to Stonington displays a much wanner stone. The middle ground of Oak point shows something in between. The source of the redness may lie in oxidized (rusty) iron that replaces aluminum ions typically present in a mineral called feldspar.
|Deer Isle Granite: Oak Point|
|Deer Isle Granite: Stonington|
Dietrich, Richard Vincent, and Brian J. Skinner. Rocks and Rock Minerals. New York: Wiley, 1979. Print.
Hooke, Roger Leb.. "A Geologic History of Deer Isle, Maine." College of the Atlantic, Serpentine Ecology Conference. July 2007. Web. 14 Oct. 2013. <www.coacommunity.net/downloads/serpentine08