Department of Earth and Environmental Science

Igneous Rocks:

Volcanic Breccia

An extrusive igneous rock composed of large pyroclasts (fragments >2 mm) in a phaneritic groundmass.

Collections

History of the Collections

Overview of the Collections

Teaching Collections

• Teaching Demonstrations and Supplies
• Field Trip Supplies
• Earth Science Collections

Accessing the Collections

Collections Staff

Contact

Department of Earth and Environmental Science
240 S. 33rd Street
Hayden Hall
Philadelphia, PA
19104-6316

nmccann@sas.upenn.edu

(T) - 215-746-0086