Category:Valentine Formation
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English: The Valentine Formation is a geological classification for the lowest strata of the Ogallala unit. The notable feature of this strata is the unique lenticular beds of greenish opal-cemented sandstone that form landmark bluffs in the central High Plains of North America and is quarried for construction material.
Formal use of this classification has been abandoned outside of Nebraska; however, the features of this material are observed and exploited throughout the region.
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Subcategories
This category has the following 5 subcategories, out of 5 total.
Media in category "Valentine Formation"
The following 4 files are in this category, out of 4 total.
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Natural seeps PA120590.jpg 3,072 × 2,304; 1.47 MB
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Ogallala, Valentine, opaline sandstone, Hays, KS, Walmart 20200523 174044.jpg 3,654 × 2,306; 2.94 MB
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Ogallala, Valentine, opaline sandstone, Hays, KS, Walmart 20200523 174125.jpg 3,086 × 2,384; 2.54 MB
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Ogallala, Valentine, opaline sandstone, Rush County, KS 20200607 172321.jpg 4,032 × 3,024; 3.81 MB
Categories:
- Ogallala Formation
- Miocene fossil bearing formations in the United States
- Mammal fossil-bearing stratigraphic units in the United States
- Miocene formations in Kansas
- Miocene formations in Nebraska
- Miocene formations in South Dakota
- Sandstone formations in Kansas
- Sandstone formations in Nebraska
- Sandstone formations in South Dakota