Pennsylvania Geology - Summer 2015 issue

Pennsylvania Geology magazine

The newest version of Pennsylvania Geology downloaded as a PDF and is also attached below.

Please forward this link to anyone who you might think would be interested in the geology of Pennsylvania and ask them to contact us at to subscribe.

For previous versions of Pennsylvania Geology, please visit their website.

Table of Contents includes:

  • Editorial - Isn’t Pennsylvania Already Mapped?
  • The Role of Rock Cleavage on Mass Wasting in the Hamilton Group (Middle Devonian), Sunbury, Pennsylvania
  • Reflections on “Spirifer disjunctus,” a Group of Late Devonian Brachiopods Useful for Correlation in Pennsylvania
  • Continuous Monitoring of Meteorological Conditions and Movement of a Deep-Seated, Persistently Moving Rockslide Along Interstate Route 79 Near Pittsburgh