Overlap sections of the Rutgers and Titusville cores. The colors correspond approximately to the colors of the mudstones. The black vertical bars represent normally magnetized rock; the white vertical bars represent reversely magnetized rock. Note that facies of lake-highstand deposits tend to be deeper (more gray and black) and that stratigraphic units are thicker in Titusville compared to Rutgers. Modified from Schlische (2003) based on data in Olsen et al. (1996a).