Figure 52. Stratigraphic column of Ojo Alamo Sandstone and adjacent strata near Barrel Spring in Ojo Alamo type area (Figure 3, Figure 4). Column is modified from Baltz et al. (1966, plate I, column 11). Stratigraphic levels for collections 2 and 3 projected into column; sample collection 2 from west of Barrel Spring, sample collection 3 from north of Ojo Alamo Arroyo (Baltz et al. 1966, plate I).