Named for town of Burnstad, Logan Co, ND. Type area designated in secs 9-11, 14-16, T134N, R71W, northwest of Burnstad, Williston basin. Name first used as Burnstad end moraine by Lemke, Colton (1958, North Dakota Geol. Surv. Misc. Ser. 10, p. 41-57). Covers entire Missouri Coteau part of Logan and McIntosh Cos and some adjacent parts of Coteau Slope. Drifts described in this report are not lithostratigraphic units as defined by American Commission on Stratigraphic Nomenclature (1961) because drifts have been differentiated by their topographic form, geographic position, and inferred geologic history. Consists of till of Burnstad end moraine and other associated drift that was deposited from same glacial ice, including till of Venturian, Fresh Lake, and Streeter end, dead-ice, and ground moraines, and associated outwash and lake sediment. Thickness not given. Distinguished from older Zeeland Drift (new) as Burnstad end moraine overlaps Zeeland end moraine indicating that Burnstad was deposited from ice of a readvance. Is youngest drift in study area; underlies postglacial sediments. Geologic map; correlation chart. Contains fresh-water snail, mussel, ostracode, and stonewort (CHARA) fossils in ice-contact lake; fossil list. Includes Streeter drift of Clayton (1961, North Dakota Acad. Sci. Proc., v. 15, p. 11-18). Assigned late Wisconsin (Pleistocene) age based on radiocarbon dates ranging from 9,000 +/-300 yr to 11,650 +/-310 yr.

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