STRATIGRAPHIC COLUMN

The following table lists the rock formations in order from youngest to oldest, a pattern which corresponds with the image below.

Name	Thickness	Rock Type	Paleo- environment	Remarks
Mancos Shale	2000 - 3000 ft	Mostly dark gray shale interlayered with sandstone	An interior seaway	Factory Butte and badlands near Caineville
Dakota Sandstone	0 - 50 ft	Tan sandstone with oyster shell fossils	Coastal	Locally absent; Oyster Shell Reef
Morrison Formation	180 - 700 ft	White crossbedded sandstone & candy-striped mudstone	Rivers & lakes; bentonite clays from altered volcanic ash	Bentonite Hills are in Brushy Basin Member
Summerville Formation	150 - 300 ft	Thinly-bedded, reddish-brown siltstone	Tidal flats	Inconspicuous in Capitol Reef area
Curtis Sandstone	0 - 80 ft	Grayish-green sandstone & siltstone	Marine	Caps cathedrals of Cathedral Valley
Entrada Sandstone	450 - 750 ft	Earthy, red, very fine-grained sandstone & gypsum	Tidal flats	Cathedrals of Cathedral Valley
Carmel Formation	300 - 1000 ft	Interlayered red siltstone & gypsum	Transitional between marine and continental	Cap of Golden Throne
Navajo Sandstone	800 - 1100 ft	White crossbedded sandstone	Sahara desert-like sand dunes	Capitol Dome, Navajo Dome & Grand Wash Narrows
Kayenta Formation	350 ft	Interlayered red sandstone & siltstone	Southwest flowing rivers	Top, ledgy portion of Fruita Cliffs
Wingate Sandstone	350 ft	Massive sandstone; weathers dark red	Sand dunes	Fruita Cliffs & Circle Cliffs
Chinle Formation	350 - 550 ft	Multicolored sandstone, siltstone & bentonitic mudstone	Forested basins with rivers, swamps & lakes	Slopes below Fruita Cliffs; contains petrified wood & uranium
Shinarump Member (Chinle Formation)	0 - 90 ft	White sandstone	River channels	Discontinuous; cap of Chimney Rock
Moenkopi Formation	500 - 1000 ft	Mostly dark red siltstone & mudstone; minor yellowish limestone	Tidal flats, floodplains & lagoons	Miners Mountain, Egyptian Temple & base of Chimney Rock
Kaibab Limestone	70 - 100 ft	Gray dolomitic limestone	Marine	Fremont River Gorge
White Rim Sandstone	400+ ft	White crossbedded sandstone	Beach & dune sands	Fremont River Gorge & Goosenecks of Sulphur Creek