Assigned as upper member of Altyn formation of Ravalli group of Belt series. Overlies Hell Roaring member (named) of Altyn. Underlies Singleshot member of Appekunny formation gradationally. Consists of blue-gray, buff to brown to red magnesian limestone, quartzite, dolomite. About 700 to 900 ft thick. Measured section 892+ ft thick at Waterton Lakes Park. Type locality assigned at eastern cliffs Cameronian Mountain above Cameron Creek, Waterton Lakes Park, Alberta, Canada. [Carthew Creek shown on Pl. 1 in Waterton Lakes Park.] Correlation chart. Of pre-Cambrian age.
Source: GNU records (USGS DDS-6; Denver GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).