Category:Shonkin Sag Laccolith

Media in category "Shonkin Sag Laccolith"

The following 5 files are in this category, out of 5 total.

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  Phonolite (Early Eocene, 50-54 Ma; roadcut along Beaver Creek Road, Bearpaw Mountains, Montana, USA) 3 (49057868878).jpg 3,030 × 2,108; 3.85 MB
  
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  Porphyritic phonolite (Shonkin Sag Laccolith, Early Eocene, 50-53 Ma; Buck Ranch, Highwood Mountains, Montana, USA) 1 (49061149591).jpg 3,295 × 2,313; 5.33 MB
  
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  Porphyritic phonolite (Shonkin Sag Laccolith, Early Eocene, 50-53 Ma; Buck Ranch, Highwood Mountains, Montana, USA) 2 (49060639443).jpg 3,683 × 2,999; 7.31 MB
  
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  Sandstone-phonolite intrusive contact (Buck Ranch, Highwood Mountains, Montana, USA) 1 (49060639223).jpg 3,996 × 1,929; 4.91 MB
  
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  Sandstone-phonolite intrusive contact (Buck Ranch, Highwood Mountains, Montana, USA) 2 (49061149871).jpg 4,000 × 2,467; 6.78 MB