Navajo Sandstone

Navajo Sandstone
Stratigraphic range: Hettangian-Sinemurian ~200–195 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
A prominent cuesta of Navajo Sandstone rims the edge of the San Rafael Swell in eastern Utah
Type	Geological formation
Unit of	Glen Canyon Group
Underlies	Carmel Formation and Page and Temple Cap sandstones, separated by J-1 and J-2 unconformities
Overlies	Kayenta Formation with conformable and interfingering contact
Thickness	Up to 2,300 ft (700 m)
Lithology
Primary	Eolian sandstone
Other	Lacustrine limestone and dolomite
Location
Coordinates	36°42′N 110°48′W / 36.7°N 110.8°W / 36.7; -110.8
Approximate paleocoordinates	23°54′N 48°30′W / 23.9°N 48.5°W / 23.9; -48.5
Region	Arizona, Colorado, Nevada, Utah
Country	United States of America
Extent	102,300 sq mi (264,955.8 km2) - original extent of the Navajo Sand Sea may have been 2.5 times larger than this remaining outcrop
Type section
Named for	Navajo County
Named by	Gregory and Stone[1]
Year defined	1917
Navajo Sandstone (the United States) Show map of the United States Navajo Sandstone (Arizona) Show map of Arizona

The Navajo Sandstone is a geological formation in the Glen Canyon Group that is spread across the U.S. states of southern Nevada, northern Arizona, northwest Colorado, and Utah as part of the Colorado Plateau province of the United States.^[2]