Category:Diabase dikes in Minnesota

Media in category "Diabase dikes in Minnesota"

This category contains only the following file.

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  Reddish, strongly altered, augite-quartz monzodiorite & black dike of high-FeTi diabase (Duluth Complex, Mesoproterozoic, 1099 Ma; Twin Lakes East Skyline Parkway roadcut, Duluth, Minnesota, USA) 2.jpg 4,000 × 3,000; 5 MB