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About: Hakatai Shale     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:MilitaryUnit, within Data Space : dbpedia.org associated with source document(s)

Type: yago:Abstraction100002137yago:Arrangement107938773yago:Formation108426461yago:Group100031264yago:WikicatGeologicFormationsOfTheUnitedStatesmilitary unit New Facet based on Instances of this Class

The Hakatai Shale is a Mesoproterozoic rock formation with important exposures in the Grand Canyon, Coconino County, Arizona. It consists of colorful strata that exhibit colors varying from purple to red to brilliant orange. These colors are the result of the oxidation of iron-bearing minerals in the Hakatai Shale. It consists of lower and middle members that consist of bright-red, slope-forming, highly fractured, argillaceous mudstones and shale and an upper member composed of purple and red, cliff-forming, medium-grained sandstone. Its thickness, which apparently increases eastwards, varies from 137 to 300 m (449 to 984 ft). In general, the Hakatai Shale and associated strata of the Unkar Group rocks dip northeast (10–30°) toward normal faults that dip 60° or more toward the southwest. T