Schnebly Hill Formation

The Schnebly Hill Formation is a section of red bed deposits found at the Colorado Plateau, near Sedona, Arizona. It is a dark red sandstone, from 800 feet (240 m) to 1,000 feet (300 m) thick. It lies between Coconino Sandstone and the older Hermit Formation.^[2] It is near the Supai Group.^[3]

Schnebly Hill Formation
Stratigraphic range: 286–273 Ma PreꞒ Ꞓ O S D C P T J K Pg N [1]
Bell Rock, Sedona
Thickness	800 feet (240 m) to 1,000 feet (300 m)
Lithology
Primary	Sandstone
Location
Region	Colorado Plateau
Country	United States
Type section
Named for	Sedona Schnebly
Location	Arizona
Thickness at type section	800 feet (240 m) to 1,000 feet (300 m)

The source of the name "Schnebly" is Sedona Schnebly, after whom the city of Sedona, Arizona, was named.^[4]

Geology

The formation traces to the Permian Age.^[5][6]

The formation is the most prominent layer of the red rocks of the Sedona area due the presence of hematite – iron-oxide (rust) – giving the sandstone a red color. The Schnebly Hill Sandstone formation comprises three sections:

• the Bell Rock member,
• the Fort Apache member, and
• the Sycamore Pass member.^[7]

See also

Sedona-area rocks

• Bell Rock
• Capitol Butte
• Cathedral Rock
• Courthouse Butte
• Red Rock State Park
• Slide Rock State Park
• Two Nuns

Local geology

• Colorado Plateau
• Mogollon Rim
• Supai Group

Local interest

• Cottonwood, Arizona
• Honanki
• Jerome, Arizona
• Jerome State Historic Park
• Chapel of the Holy Cross
• Oak Creek Canyon
• Palatki Heritage Site
• Slide Rock State Park