The Structural and Metamorphic History of the Wissahickon Formation in the Philadelphia Area. Map of the Fairmount Structures. Permalink: https://digitalcollections.tricolib.brynmawr.edu/object/bmc86207 Item Description Member of Geology Maps Description From Amenta, R., The Structural and Metamorphic History, Bryn Mawr 1970, Figure 2. Physical Form Cartographic Map Genre geological maps Date Created 1970-04 Temporal Subject Twentieth century Geographic Subject Wissahickon (Pa.) Language English Extent 1 map : color ; 11 x 8.5 inches Resource Type Still Image Internet Media Type image/tiff Digital Origin reformatted digital Institution Bryn Mawr College Library pbm Department Bryn Mawr College Special Collections Shelf Locator Collier Science Library, Geology Map Collection Local Identifier GIS-00253 PID bmc:86207 Record Content Source pbm Rights Statement IN COPYRIGHT