The Sweet Arrow fault between Swatara Gap and New Ringgold is a major structural element separating overturned rocks to the N. from a normal sequence of rocks to the S. The fault also probably is responsible for the numerous anomalous stratigraphic and structural relations from New Ringgold E. to the Lehigh River and from Swatara Gap W. to the Susquehanna River. From surface reconstructions the Sweet Arrow fault is interpreted as a thrust which dips S. at 40 degrees -70 degrees and has a throw that may locally be as great as several thousand feet.

You do not currently have access to this article.