Category:Porphyritic gneiss

Media in category "Porphyritic gneiss"

The following 2 files are in this category, out of 2 total.

• 
  EB9 New Hampshire - New England rock distribution.jpg 1,187 × 1,393; 372 KB
  
• 
  The geology of New Hampshire - a report comprising the results of explorations ordered by the legislature (1874) (14782071884).jpg 1,808 × 2,220; 463 KB