Four types rocks: gray with well-developed stratification; grayish-green claystone; buff to tan siltstone stained with iron, contains fossils; quartzitic red sandstone, possibly transported by ice rafting.
Cite the IMLGS database as: Curators of Marine and Lacustrine Geological Samples Consortium. The Index to Marine and Lacustrine Geological Samples (IMLGS). National Geophysical Data Center, NOAA. doi:10.7289/V5H41PB8 [date of access].