Figure 2.
Aeromagnetic map of part of southeastern Pennsylvania, northwestern Delaware, and northeastern Maryland. Deep magnetic low (patterned) approximately outlines Mill Creek dome of Baltimore Gneiss, Setters Formation, and Cockeysville Marble.
Aeromagnetic map of part of southeastern Pennsylvania, northwestern Delaware, and northeastern Maryland. Deep magnetic low (patterned) approximately outlines Mill Creek dome of Baltimore Gneiss, Setters Formation, and Cockeysville Marble.