Category:Cretaceous rocks in the United States

Subcategories

This category has the following 11 subcategories, out of 11 total.

Media in category "Cretaceous rocks in the United States"

The following 2 files are in this category, out of 2 total.

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  Chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Castle Rock, south of Quinter, Kansas, USA) 40 (39144266012).jpg 4,288 × 2,848; 6.2 MB
  
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  Steatite (soapstone) (Early Cretaceous; quarry apparently on Elliott Creek Ridge, Oregon, USA) (16712622489).jpg 1,243 × 741; 1.38 MB