Geologic Unit: Cuyahoga

Usage:

Cuyahoga Formation (OH*,PA,WV)
Cuyahoga Formation of Pocono Group (NY*,PA*)
Cuyahoga Group (OH*,PA*)

Subunits:

GROUP STATUS (alphabetical) --all in OH*,PA*: Meadville Shale, Orangeville Shale, Sharpsville Sandstone.
FORMATION STATUS (alphabetical): Armstrong Sandstone Member (OH), Black Hand Sandstone Member (OH), Buena Vista Sandstone Member (OH*) or Buena Vista Member (OH*), Burbank Member (OH-local), Churn Creek Member (OH), Fairfield Member (OH), Henley Shale Member (OH), Lithopolis Siltstone Member (OH), Meadville Shale Member (OH,PA), Orangeville Shale Member (OH,PA), Pleasant Valley Member (OH), Portsmouth Shale Member (OH), Raccoon Shale Member (OH), Rarden Shale Member (OH), Rittman Conglomerate Lentil (OH) or Rittman Member (OH), Sharpsville Sandstone Member (OH,PA), Shaws Sandstone Member (PA), Strongsville Member (OH), Vanceburg Sandstone Member (OH), West Mead Limestone Member (PA), Wooster Shale Member (OH).

Geologic age:

Early Mississippian (Tournaisian; Kinderhookian to Osagean)*

Type section, locality, area and/or origin of name:

Named from exposures along Cuyahoga River, between Akron and Cleveland, northeastern OH (Newberry, 1870).

AAPG geologic province:

Appalachian basin*