
Figure F13. A. Middle neritic silt from the Wenonah Formation (674–676 ft; 205.44–206.04 m). B. Middle neritic glauconite sand from the Marshalltown Formation (682–684 ft; 207.87–208.48 m). C. Contact between the Marshalltown Formation (glauconite sand) above and Englishtown Formation (quartz sand) below (686–688 ft; 209.09–209.70 m). D. Delta front sand in the upper Englishtown Formation (720–722 ft; 219.46–220.07 m).
