Staying in the east, following Massachusetts geology (see older post). Just to the north of Massachusetts, New Hampshire is known as the Granite State, and with good reason. Much of the northern portion of the state is underlain by igneous rocks, especially granite. To the south, the blue, purple and green hues indicate various metamorphic rocks, but look a those big blobs of yellow and pink. Those are the igneous rocks. Magma pooled underground long ago and slowly solidified, forming large crystals of different minerals. It could look like this:New Hampshire's emblem is the Old Man of the Mountain. Formed out of a series of rock ledges, projecting out over a valley, viewed from a certain angle it looked like a craggy face. Until May 2003, that is. The rock ledges had been weakened by erosion and part of the face broke off. This New Hampshire website has more information and photos.
Happy PFF and Happy Geology!
See Marie's website for more postcards!