Untitled Document List of Slides for Acadia NP Mt. Desert Island , the heart of the park, hovers shadowy in the distance. Typical scenery in the park - granite outcrops and coastal fog. Fishing boats moor in Northeast Harbor , on Mt. Desert Island.
Sand Beach persists in a sheltered cove.
Seagulls and people wander the Schoodic Peninsula. The rock of the Schoodic Peninsula is granite, cut by many mafic dikes. In a slice of rock called a thin section , the different minerals found in granite form an interlocking mosaic of individual crystals. Here, granite surrounds a xenolith of older basalt. But in this picture, younger basalt forms a dike intruding into older granite.