Category:Cretaceous geology of Montana

Subcategories

This category has the following 18 subcategories, out of 18 total.

Media in category "Cretaceous geology of Montana"

The following 31 files are in this category, out of 31 total.

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  Aplite dike in Butte Quartz Monzonite (Late Cretaceous, 76 Ma; Orphan Boy Mine, Butte, Montana, USA) 1 (8359832244).jpg 2,426 × 3,165; 6.01 MB
  
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  Aplite dike in Butte Quartz Monzonite (Late Cretaceous, 76 Ma; Orphan Boy Mine, Butte, Montana, USA) 10.jpg 3,008 × 2,000; 4.32 MB
  
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  Aplite dike in Butte Quartz Monzonite (Late Cretaceous, 76 Ma; Orphan Boy Mine, Butte, Montana, USA) 2 (8358767647).jpg 3,648 × 2,736; 8.2 MB
  
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  BrokenConcretion22.jpg 1,200 × 900; 698 KB
  
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  Bug Creek Area of Critical Environmental Concern, Montana (15484364679).jpg 960 × 638; 130 KB
  
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  Butte Quartz Monzonite (Late Cretaceous, 76 Ma; roadcut next to Syndicate Pit, Butte, Montana, USA).jpg 3,648 × 2,736; 9.28 MB
  
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  Chalcopyrite-pyrrhotite (Late Cretaceous; Cable Mine, 1.4 miles east of Georgetown, Deer Lodge County, western Montana, USA) 5.jpg 1,660 × 1,584; 1.07 MB
  
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  Chalcopyrite-pyrrhotite (Late Cretaceous; Cable Mine, 1.4 miles east of Georgetown, Deer Lodge County, western Montana, USA) 6.jpg 2,316 × 1,574; 1.6 MB
  
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  Chalcopyrite-pyrrhotite (Late Cretaceous; Cable Mine, ~1.4 miles east of Georgetown, Deer Lodge County, western Montana, USA) 1.jpg 2,180 × 2,404; 1.86 MB
  
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  Chalcopyrite-pyrrhotite (Late Cretaceous; Cable Mine, ~1.4 miles east of Georgetown, Deer Lodge County, western Montana, USA) 3.jpg 2,460 × 2,316; 2.2 MB
  
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  Coal Stratigraphy Powder River Basin.png 1,475 × 1,725; 58 KB
  
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  Enargite (latest Cretaceous to earliest Tertiary, 62-66 Ma; Leonard Mine, Butte, Montana, USA) 2 (18904721766).jpg 3,282 × 2,310; 2.85 MB
  
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  Fig 2 Section of frontal range of Rocky Mountains (49th parallel).jpg 1,416 × 284; 40 KB
  
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  Garnetite (garnet skarn) (Late Cretaceous, 69-77 Ma; near Brownes Lake, southwestern Montana, USA) (16319268014).jpg 1,207 × 804; 1.59 MB
  
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  Granodiorite (Tobacco Root Batholith, Late Cretaceous, 71-74 Ma; Norris South roadcut, Madison County, Montana, USA) 2 (44903472854).jpg 4,000 × 2,756; 7.89 MB
  
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  Native copper (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 1.jpg 3,438 × 2,658; 6.17 MB
  
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  Native copper (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 4.jpg 3,139 × 2,381; 6.84 MB
  
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  Native copper pods in garnet-pyroxene skarn (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 2.jpg 2,939 × 1,906; 4.65 MB
  
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  Native copper pods in garnet-pyroxene skarn (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 3.jpg 3,008 × 1,898; 4.21 MB
  
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  Native copper pods in garnet-pyroxene skarn (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 6.jpg 3,053 × 1,873; 4.87 MB
  
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  Native copper stockwork in skarn rock (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 2.jpg 3,008 × 2,000; 4.49 MB
  
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  Native copper stockwork in skarn rock (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 3.jpg 3,193 × 2,504; 6.18 MB
  
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  Native copper stockwork in skarn rock (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 4.jpg 3,434 × 2,516; 6.71 MB
  
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  Native copper stockwork in skarn rock (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 6.jpg 3,635 × 2,706; 7.95 MB
  
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  Pyrite (latest Cretaceous to earliest Tertiary, 62-66 Ma; Leonard Mine, Butte, Montana, USA) 2 (18995635158).jpg 3,644 × 2,397; 6.97 MB
  
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  Pyritic quartz monzonite (Butte Quartz Monzonite, Late Cretaceous; Continental Pit, Butte, Montana, USA) (31040133400).jpg 2,850 × 2,480; 5.67 MB
  
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  Quartz monzonite (Butte Quartz Monzonite, Late Cretaceous, 68-78 Ma; Interstate 90 outcrop, southeast of Butte, Montana, USA) (16168713613).jpg 1,086 × 687; 1.09 MB
  
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  Quartz-sulfide hydrothermal vein in quartz monzonite (Butte Quartz Monzonite, Late Cretaceous; Continental Pit, Butte, Montana, USA) (30588174684).jpg 2,492 × 1,877; 3.25 MB
  
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  Square butte.jpg 1,347 × 831; 877 KB
  
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  SunRiver.JPG 2,048 × 1,536; 1.39 MB
  
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  Waste rock pile from copper mine (Butte, Montana, USA) 3.jpg 3,008 × 2,000; 5.33 MB