The Rocks of the Manhattan Prong show similar tectonic, metamorphic, sedimentary, geomorphic, and igneous features to our own rocks here in northern Delaware and southeastern Pennsylvania.
How noteworthy was Tuesday's quake across Virginia, Maryland, Delaware and much of the American East Coast?
Enough to raise the eyebrows of an earth scientist in central Pennsylvania whose work has taken him onto some of the world's shakiest real estate.
William "Sandy" Schenck lead a field trip through the Delaware Piedmont for the A.I. duPont High School Earth Science Class. The trip made use of the Wilmington-Western Railroad and everyone rode the railroad's "Doodle Bug." Activities included up close examinations of rock and mineral features and even "Panning for Garnets" at Brandywine Springs Park.
All the rock units in Delaware’s Piedmont are highly deformed. Deformational features, such as folds, faults, and/or joints, are present in almost every outcrop.