Measured By N. Plummer and J.F. Romary, 12/8/1939; RESIDUAL,CLAY--silty to clayey silt, light gray with yellow limonitic streaks, typical upper Dakota,SILT TO FINE SANDSTONE--gray with slight yellow,CLAY--plastic, buff to brown with purple streaks,CLAY--plastic, dark gray to nearly black, many small slickensides,CLAY--dark gray,SANDSTONE--fine to silt, light gray to yellow, cross-bedded, irregular at top, thickens to east, becomes more clayey toward bottom and also shows more yellow,CLAY--silty, gray and yellow,CLAY--plastic, gray with considerable yellow in large areas and considerable yellow joint stain,CLAY--plastic, gray to dark gray streaks with some yellow stain,CLAY--silty, gray with some yellow streaks,SANDSTONE--fine to silty, [...]
