Category:Basalt in Michigan

Subcategories

This category has the following 3 subcategories, out of 3 total.

Media in category "Basalt in Michigan"

The following 8 files are in this category, out of 8 total.

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  Amygdaloidal basalt (Portage Lake Volcanic Series, upper Mesoproterozoic, 1.093 to 1.097 Ga; Keweenaw Peninsula, Upper Peninsula of Michigan, USA) (8280978633).jpg 960 × 628; 446 KB
  
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  Amygdaloidal basalt (Portage Lake Volcanic Series, upper Mesoproterozoic, ~1.095-1.096 Ga; old quarry north of South Range, Upper Peninsula of Michigan, USA) (8280980247).jpg 960 × 634; 358 KB
  
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  Amygdaloidal basalt (upper Portage Lake Volcanic Series, upper Mesoproterozoic, ~1.094 Ga; Delaware Copper Mine, Upper Peninsula of Michigan, USA) (8282034404).jpg 960 × 629; 466 KB
  
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  Cupriferous amygdaloidal basalt (Mesoproerozoic, 1.05-1.06 Ga; Keweenaw Peninsula, northern Michigan, USA) (16691110994).jpg 2,505 × 1,992; 3.2 MB
  
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  Cupriferous amygdaloidal basalt (Mesoproterozoic, 1.05-1.06 Ga; Wolverine Mine, Kearsarge, Upper Peninsula of Michigan, USA) (17323753605).jpg 2,126 × 1,808; 4.02 MB
  
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  Epidotic vesicular basalt (Portage Lake Volcanic Series, upper Mesoproterozoic, 1.093 to 1.097 Ga; Gratiot Mine, Keweenaw Peninsula, Upper Peninsula of Michigan, USA) 2 (9396427790).jpg 1,182 × 1,103; 248 KB
  
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  Epidotic vesicular basalt (Portage Lake Volcanic Series, upper Mesoproterozoic, 1.093 to 1.097 Ga; Gratiot Mine, Keweenaw Peninsula, Upper Peninsula of Michigan, USA) 3 (9393657643).jpg 1,304 × 1,095; 374 KB
  
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  Ophitic basalt (Scales Creek Flow, Portage Lake Volcanic Series, upper Mesoproterozoic, ~1.095-1.096 Ga; Seventh Street roadcut, Houghton, Upper Peninsula of Michigan, USA) (8282036164).jpg 960 × 605; 533 KB