This is the view looking north at Bell Rock from the trailhead in the late afternoon. A monsoon had rumbled through earlier in the afternoon and everything was fresh & clean.
Clouds and evening in Sedona Red Rock Country - This is Courthouse Butte. It was late afternoon and I was standing by Bell Rock facing northeast.
edited 5/28/07 from input from Altamons verifying that this is Courthouse Butte. I was uncertain about the identification.
This is Schnebly Hill Formation. www.fs.fed.us/r3/resources/geology/forests/coconino/redro...
The Schnebly Hill Formation plays a leading role in the Sedona area, making up most of the spectacular red rock cliffs, including Bell Rock, Courthouse Rock, Cathedral Rock, and Coffee Pot Rock. All of the bright orange sandstone in Oak Creek Canyon is also part of the Schnebly Hill Formation.
The Schnebly Hill Formation has been divided into four members in the Sedona area, from youngest to oldest:
Sycamore Pass Member - up to 700 feet of red to orange sandstone containing high-angle cross-beds
Ft. Apache Member - a limestone, dolomite, and siltstone unit, 8 to 10 feet thick at the top of Bell Rock, over 100 feet thick to the southeast near Ft. Apache
Bell Rock Member - over 500 feet of flat-bedded, ripple-marked sandstone and siltstone, slightly darker in color than the Rancho Rojo
Rancho Rojo Member - 20 to 40 feet of orange sandstones containing low-angle cross-beds
The Schnebly Hill Formation is separated from the underlying Hermit Formation by an unconformity representing less than one million years of erosion or non-deposition. While the Hermit Formation was being deposited, the Sedona area was an arid floodplain surrounding river channels draining the Ancestral Rocky Mountains.