Stratigraphy of the Lower Pierre Shale (Campanian): Implications for the Tectonic and Eustatic Controls on Facies Distributions

Figure 5

Map of the Western Interior of North America showing major geographic features for the region. Open circles represent localities of the Ardmore succession that were included in this study. Locality abbreviations: WR (Wallace Ranch, South Dakota); IG (Igloo, South Dakota); WsR (Wasserburger Ranch, near Ardmore, South Dakota); BG (Buffalo Gap, South Dakota); BR (Brown Ranch, South Dakota); RED (Redbird, Wyoming); C (Chamberlain, South Dakota); YKT (Yankton, South Dakota); PEM (Walhalla, North Dakota); 7MH (Seven Mile Hill, south of Choteau, Montana); WAL (McAllaster Buttes, South Dakota); BUR (Burris Draw, South Dakota).