Category:Columnar basalts in Minnesota

Media in category "Columnar basalts in Minnesota"

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

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  Baptism River Basalt (North Shore Volcanic Group, Mesoproterozoic, ~1097 Ma; Split Rock Lighthouse, Minnesota, USA) 2 (22633565687).jpg 3,600 × 2,547; 4.21 MB
  
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  Baptism River Basalt (North Shore Volcanic Group, Mesoproterozoic, ~1097 Ma; Split Rock Lighthouse, Minnesota, USA) 3 (23063082361).jpg 4,000 × 3,000; 5.23 MB