Figure 62. Photograph of trench cut through base of Ojo Alamo Sandstone and uppermost Kirtland Formation at Barrel Spring locality. Figure 61 shows location of trench. Sample locality 82403-A is about 4 m below base of Ojo Alamo Sandstone at about same stratigraphic level as coaly bed that pinches out east of here (Figure 61). Contact between Ojo Alamo Sandstone and Kirtland Formation shown by red line (solid where clearly visible, dotted where covered). Geologic pick 0.33 m long.