The Philadelphia Geological Society exists to bring individuals interested in geology together.


Its more than 50 active members stay current with both local and global geology by participating in regular lectures and occasional field trips.





Next meeting: 7:00 pm Thursday April 18, 2024


Dr. John Sime, University of Pennsylvania


Visualizing Fossils: From Historical to Current Practices in Paleontology




Bryn Mawr College, Park Science Center, Room 25.

900 New Gulph Road, Bryn Mawr



Free of charge

and Virtual via Zoom Webcast; details below:

John Sime is inviting you to a scheduled Zoom meeting.

Topic: PGS Meeting 2024-04-18
Time: Apr 18, 2024 06:45 PM Eastern Time (US and Canada)

Join Zoom Meeting

Meeting ID: 935 7901 2953
Passcode: 986695


One tap mobile
+13126266799,,93579012953# US (Chicago)
+16465588656,,93579012953# US (New York)


Dial by your location
+1 312 626 6799 US (Chicago)
+1 646 558 8656 US (New York)
+1 301 715 8592 US (Washington DC)
+1 346 248 7799 US (Houston)
+1 669 900 9128 US (San Jose)
+1 253 215 8782 US (Tacoma)

Meeting ID: 935 7901 2953

Find your local number:


News & Events






PGS is now on Twitter!

Follow @PhilaGeolSoc



- Further information on membership, including an application, is available on this site.


- View a calendar of 2024 meetings, including the next scheduled lecture.


- We also offer useful links to other web sites of relevance to Pennsylvania geology.


- You can access information on the history of the Society as well.


- Learn about Philadelphia-area geology and find related resources.



PGS Officers and Contacts

Benjamin Greeley, President

727 South Warnock Street
Philadelphia, PA 19147

Joe Tomalavage, Secretary/Treasurer

1429 Shaner Drive

Pottstown, PA 19465






Webmaster: C. David Brown


Social Media: vacant


Last revised: 17 April 2024