Titkana Formation

The Titkana Formation is a stratigraphic unit of Middle Cambrian age that is present on the western edge of the Western Canada Sedimentary Basin in the northern Canadian Rockies of Alberta and British Columbia.^[3] It was named for Titkana Peak near Mount Robson by Charles Doolittle Walcott in 1913.^[2] The Titkana Formation is generally unfossiliferous.^[1]

Titkana Formation
Stratigraphic range: Middle Cambrian ~509–500 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Underlies	Pika Formation
Overlies	Tatei Formation
Thickness	Up to 520 metres (1700 ft)[1]
Lithology
Primary	Limestone, dolomitic limestone
Location
Coordinates	59°19′20″N 119°03′59″W
Region	Canadian Rockies
Country	Canada
Type section
Named for	Titkana Peak
Named by	Charles Doolittle Walcott[2]

Lithology and deposition

The Titkana Formation formed as a shallow marine shelf along the western shoreline of the North American Craton during Middle Cambrian time.^[3][4] Some of the original limestone was subsequently altered to dolomite.^[1]

Distribution and stratigraphic relationships

The Titkana is present in the northern Canadian Rockies of Alberta and British Columbia where it reaches thicknesses of up to about 520 metres (1700 ft). It conformably overlies the Pika Formation and is unconformably overlain by the Tatei Formation. It is equivalent to the Eldon Formation in the southern Canadian Rockies.^[1]