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Did you look in the tree? Whoops, missed him! This view of Courthouse Butte is from one of the parking areas near Bell Rock in Oak Creek. Located off the main trailhead that serves the better known Bell Rock, Courthouse Butte is a Sedona Red Rock destination in itself. According to local legend, nearby Cathedral Rock was supposed to be called Courthouse Butte, and Courthouse Butte was supposed to be called Church Rock, because of its close proximity to Bell Rock and its church bell symmetry. However in the 1800's, a mapmaker made a mistake and mislabeled the formations and the mistaken names became part of history. It doesn't matter how this fabulous rock formation got its name, it is one Sedona landscape point of interest you won't want to miss.
The red rocks of Sedona show layers of time in the rock strata. Defining the boundary between the Colorado Plateau to the north, the Basin and Range to the south and the base of the Mogollon Rim, Courthouse Butte, Bell Rock and the other red rocks form an escarpment that runs east-west through the middle of Arizona. The Mogollon Rim is about 200 miles long, and ranges between 2000 and 3000 feet in height. In the Sedona region, erosion has gradually eaten away at the rim, moving it northward a distance of about four miles and leaving behind some of the most spectacular and picturesque canyons and buttes found anywhere in the world.
The deep red color for which Sedona is famous is due to the presence of hematite or iron oxide, staining the sandstone of Schnebly Hill and Hermit Shale layers. The steep terrain is due the top layers of the strata being composed of basalt and limestone, which are both harder than the underlying sandstone. Water running off the edge of the escarpment dissolves the lower layers, creating the steep cliffs. Eventually enough soft material is broken down and eroded, undercutting the cap layer, subsequently breaking it off in large slabs allowing it to fall into the canyons. This process exposes new softer material and the process repeats, with the cliff face about twenty feet further north than it was before.
The red rocks themselves were formed by a layer of rock known as the Schnebly Hill Formation. Schnebly Hill is a thick layer of red to orange-colored sandstone, and a member of the Supai Group, which was deposited during the Permian Period about 299 to 251 million years ago. Approximately 800 to 1000 feet thick, Schnebly Hill is the major component of Sedona's well known "Red Rocks" visible in the area.
The Schnebly Hill formation is comprised of the Sycamore Pass and Bell Rock members, which are separated by a ten to twelve foot thick layer of grey-colored limestone called the Fort Apache Member, formed during a major incursion of an ancient Sea. There are no fossils in the Schnebly Hill sandstones, and virtually none in the thin limestone layers.
Technical notes: Camera, Canon 5D MkIII with a 24-105 mm lens set at 67mm. ISO 100 with the image shot at 1/20 second at f/22. Happiness is red Sedona dirt on my tripod legs!
Photograph Copyright 2013 Jon Burch Photography
March 23rd, 2013
Viewed 23 Times - Last Visitor from Phoenix, AZ on 10/30/2013 at 1:21 AM