Chinle Formation - Subunits

Subunits

Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.

Group rank (alphabetical - rank and formations not recognized by the USGS)

• San Pedro Arroyo Formation (NM),
• Santa Rosa Formation (NM),
• Shinarump Formation (NM).
• Petrified Forest Formation (AZ, UT, NM)
• Many others - see members below

Formation rank (alphabetical - several members not recognized by the USGS):

• Agua Zarca Sandstone Member (NM),
• Bluewater Creek Member (AZ,CO,NM),
• Church Rock Member (AZ*,CO*,UT*),
• Correo Sandstone Member (NM),
• Cuervo Sandstone Member (NM),
• Duffin Sandstone Member (UT),
• Gartra Member (CO*,UT*),
• Mesa Redondo Member (AZ*,NM*),
• Monitor Butte Member (AZ*,CO*,UT*),
• Moss Back Member (AZ*,CO*,UT*),
• Newspaper Rock Sandstone Bed (AZ),
• Owl Rock Member (AZ*,NM*,UT*),
• Petrified Forest Member (AZ*,CO*,NV*,NM*,UT*),
• Poleo Sandstone Lentil (NM),
• Redonda Member (NM),
• Rock Point Member (AZ*,NM*),
• Salitral Shale Tongue (NM*),
• Shinarump Member (AZ*,NV*,NM*,UT*),
• Silver Reef Sandstone Member (UT),
• Stanaker Member (UT),
• Temple Mountain Member (UT*),
• Trail Hill Sandstone (UT).