Pg. 11 (fig. 8), 23, 25, 31 (fig. 22), 35. Coachman Formation of Black Creek Group. Occurs in subsurface of southern Dorchester County, southeastern South Carolina. Sediments previously included in the Peedee Formation by Hazel and others (1977) and Gohn and others (1977). Consists mostly of calcareous clays and clayey silts. Thickness 130 feet at type. Overlies Cane Acre Formation (new) and underlies Bladen Formation (new); both of Black Creek Group. Fossils. Age is Late Cretaceous (middle to late Campanian; Tayloran Provincial Age; GLOBOTRUNCANITA ELEVATA planktic foram zone, CERATOLITHOIDES ACULEUS (NC19) calcareous nannofossil zone, ASCETOLEBERIS PLUMMERI to LIMBURGINA VERRICULA ostracode zone).
Type section (subsurface): depth-interval 1,214 to 1,344 ft, Clubhouse Crossroads No. 1 drill core, near Clubhouse Crossroads, Dorchester Co., southeastern SC. Named from crossroads of Coachmans Corner, about 7 mi from drill site.

Source: Publication.

Coachman Formation. Age is Late Cretaceous (middle Campanian). Fossils indicate the Coachman occurs within: (1) HOLKOPOLLENITES FORIX palynological zone, proposed herein; (2) CC20 calcareous nannofossil zone of Sissingh (1977, 1978); (3) EXOGYRA PONDEROSA Coastal Plain mollusk zone of Stephenson (1923); and (4) BOSTRYCHOCERAS POLYPLOCUM European Tethyan ammonoid zone of Gradstein and others (1995, 2004).

Source: Publication.