File:USGS NE Isle Royale geologic map.png
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Size of this preview: 800 × 589 pixels. Other resolutions: 320 × 236 pixels | 640 × 471 pixels | 1,024 × 754 pixels | 1,181 × 870 pixels.
Original file (1,181 × 870 pixels, file size: 1.13 MB, MIME type: image/png)
Categories:
- Geological maps of Isle Royale National Park
- Geological maps of the United States
- Copper mines
- Copper mining in the United States
- Portage Lake Volcanic Series maps
- Greenstone Flow
- Hill Point Flow
- Minong Flow
- Scoville Point Flow
- Edwards Island Flow
- Long Island Flow (Portage Lake Volcanics)
- Tobin Harbor Flow
- Huginnin Flow
- Amygdaloid Island Flow