Reduced in stratigraphic rank from Provo Formation to Provo Member, upper member of the Little Cottonwood Formation (new) of Lake Bonneville Group in Salt Lake Co area, UT on the Wasatch uplift. Good exposures are rare. Intertongues with Bonneville Member (reduced in rank from Bonneville Formation) of Little Cottonwood Formation of Bonneville Group. Overlies Alpine Member (reduced in rank from Alpine Formation) of Little Cottonwood Formation of Lake Bonneville Group. Distinguished from Bonneville on basis of altitude of Provo shoreline. Reference locality designated, but not described, is the part of the Cottonwood delta that is graded to the Provo shoreline and extends from Alta Airpark to a point about 1/2 mi north of Cottonwood Creek near south edge of Butterville. Graniteville Soil (new) is locally preserved on the Provo and it separates Provo from the overlying Draper Formation. Has a gravel facies (well rounded, well sorted, high percentage of rocks that could have been derived from nearby canyons) and a sand facies (medium to coarse, interbeds of pebbly sand, highly granitic). Fossil mollusks listed. Correlation chart. Geologic map. Of late Pleistocene age. Fossils: clams, snails.

Source: GNU records (USGS DDS-6; Denver GNULEX).

Extended into southeast ID west of Bear Lake into Franklin Co in the Great Basin province. Overlies the Alpine Formation. Pleistocene age.

Source: GNU records (USGS DDS-6; Denver GNULEX).