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, March 16, 2017.


Dr. Irina Marinov, University of Pennsylvania


Why the Southern Ocean Matters for Climate


The Southern Ocean, the vast and largely unexplored ocean surrounding Antarctica, takes up most of the human-produced greenhouse heat and a large percentage of the carbon dioxide we put into the atmosphere. The Southern Ocean is critically important for our planetís climate on both long and short time scales.


Dr. Marinov will discuss briefly the basic mechanisms of Southern Ocean circulation and biology, its role in past (paleo) climate changes, expected changes in the Southern Oceanís circulation and physics under a warming climate, and the repercussions for the rest of the planet.




Bryn Mawr College, Park Science Center, Room 243.

900 New Gulph Road, Bryn Mawr




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 2017 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: 4 March 2017