Cover Photo. Upright folds in metamorphic rocks of the Bucksport Formation at Pemaquid Point Lighthouse. The spectacular exposures here reveal many such structural features to the careful observer. This photograph looks directly along the crest of a fold, with layering on the left tilting to the left and layering on the right tilting to the right. In the middle distance the form of the fold is clearly visible. On the skyline to the right is a large ridge underlain with white pegmatite, a very coarse-grained, igneous rock that intrudes the metamorphic rock.
Last updated on January 25, 2006.