February 21, 2011
|Presidents carved in granite. Image taken from wikipedia here.|
Happy Presidents’ Day, everyone!
Lab is nice and quiet today, in honor of our nation’s presidents. Excellent. I always accomplish more on holidays! Fewer people around to distract me.
In honor of Presidents’ Day, here is a document published by the U.S. National Park Service about the geology of Mt. Rushmore:
And here is a simple geologic map of the Mt. Rushmore area taken from the above document:
|Simple geologic map of the Mt. Rushmore area. Figure taken from here.|