Pg. 105, 108-113, 119. Auxvasse Creek sandstone member of Callaway limestone. Basal member of Callaway limestone (Devonian) in Auxvasse Creek quadrangle, Callaway County, east-central Missouri. The unconformity between Callaway limestone and underlying Mineola limestone is evidenced by the thinning or absence in places of the Mineola and by presence of Auxvasse Creek sandstone member in south part of quadrangle. The Auxvasse sandstone is white, friable, calcareous sandstone; rarely fossiliferous; 16 inches to 5 feet thick. On east side of Auxvasse Creek it reaches thickness of nearly 5 feet and is well exposed a short distance north of the gravel road in NE/4 sec. 8, T. 46 N., R. 8 W., and in NW/4 sec. 9 of same twp., east of where it apparently disappears. Is also absent in central part of area. Some early workers mistook this sandstone for St. Peter sandstone, but it is St. Peter reworked by Devonian seas.

Source: US geologic names lexicon (USGS Bull. 896, p. 94).

Pg. 144. Auxvasse Creek sandstone member of Callaway limestone. Discussion of stratigraphy of Independence shale of Iowa. Stratigraphically, Independence corresponds to 15-foot bed of sandstone which crops out about 10 miles south of Hannibal, Missouri. At this locality, Callaway limestone has typical Cedar Valley fossils and limestone below the Cooper is in every way similar to Davenport member of Callaway. It seems to be a continuation of the sandstone below Cedar Valley to north in southeast Iowa of Independence shale farther north. Age is Middle Devonian.

Source: US geologic names lexicon (USGS Bull. 1200, p. 176).