Category:Old geological maps of Minnesota

Media in category "Old geological maps of Minnesota"

The following 4 files are in this category, out of 4 total.

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  Annual report (1872) (18240269019).jpg 3,024 × 1,988; 1.45 MB
  
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  Fig 6 Map showing topographic features and drift boundaries in North Dakota.jpg 2,102 × 1,596; 941 KB
  
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  Geological map of Wisconsin, Iowa and Minnesota - exhibiting, also, the extension of the Iowa coal-field into Missouri, and its relation to the Illinois coal-field (IA geologicalmapofw00owen).pdf 4,133 × 3,450, 2 pages; 3.78 MB
  
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  Lake Agassiz, southern outlet.jpg 624 × 950; 220 KB