Pennsylvania Geology Online

Pennsylvania Geology is a free online magazine published by the Bureau of Topographic and Geologic Survey. It includes articles on the geology of Pennsylvania, earth science education, and topographic mapping, and announcements of new publications, conferences, and other geologic and topographic items of interest.

In August 1969, the magazine began as a two-color, printed, bimonthly publication. In 1992, it became a quarterly publication, and with the Spring 2009 issue, it became a full-color, online publication. All of the issues can be accessed below.

To receive an email notice when a new issue is available, send your email address to:

If you would like to submit an article for publication, please read Guidelines for Authors.

Disclaimer: Each user is responsible for the appropriate application of Pennsylvania Geological Survey reports and data as explained in our official disclaimer.

Current issue: Vol. 47, No. 1


Volumes 41–47

Magazine volumes from 2011–2017

Volumes 32–40

Magazine volumes from 2001–2010


Volumes 22–31

Magazine volumes from 1991–2000

Volumes 12–21

Magazine volumes from 1981–1990


Volumes 1–11

Magazine volumes from 1969–1980