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Geology of Colorado (Boulder Valley) - Field Trip #1, Stop #7: Niobrara, Pierre Shale Formation

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Niobrara formation, Smoky Hills member. Clams, forams (single-celled organisms that construct shells) and oysters are abundant here. Note: After death, the abundance of forams in sediment samples can reach tens of thousands of individuals per cubic centimeter!
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Niobrara formation, Smoky Hills member. Clams, forams (single-celled organisms that construct shells) and oysters are abundant here. Note: After death, the abundance of forams in sediment samples can reach tens of thousands of individuals per cubic centimeter!



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