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About: Pierre Shale     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Tract108673395, within Data Space : dbpedia.org:8891 associated with source document(s)

Type: Thingyago:WikicatCretaceousPaleontologicalSitesOfNorthAmericayago:WikicatMesozoicGeologicFormationsgeo:SpatialThingyago:Abstraction100002137yago:Arrangement107938773yago:Formation108426461yago:GeographicalArea108574314yago:Group100031264yago:Land109334396yago:Location100027167yago:Object100002684yago:PhysicalEntity100001930yago:Plain109393605yago:Region108630985yago:WikicatGreatPlainsyago:YagoGeoEntityyago:YagoLegalActorGeoyago:YagoPermanentlyLocatedEntitymilitary unityago:Site108651247yago:Tract108673395 New Facet based on Instances of this Class

The Pierre Shale is a geologic formation or series in the Upper Cretaceous which occurs east of the Rocky Mountains in the Great Plains, from Pembina Valley in Canada to New Mexico. The Pierre Shale was described by Meek and Hayden in 1862 in the Proceedings of the Academy of Sciences (Philadelphia). They described it as a dark-gray shale, fossiliferous, with veins and seams of gypsum, and concretions of iron oxide. The Pierre Shale is about 700 feet (210m) thick at the type locality. It overlies the Niobrara division and underlies the Fox Hills beds. It was named for an occurrence near Fort Pierre on the Missouri River in South Dakota.