The geology of the Grand Canyon area includes one of the most complete and studied sequences of rock on Earth. The nearly 40 major sedimentary rock layers exposed in the Grand Canyon and in the Grand Canyon National Park area range in age from about 200 million to nearly 2 billion years old. Most were deposited in warm, shallow seas and near ancient, long-gone sea shores in western North America. Both marine and terrestrial sediments are represented, including lithified sand dunes from an extinct desert. There are at least 14 known unconformities in the geologic record found in the Grand Canyon.
At 1.6 million acres the Kaibab National Forest borders both the north and south rims of the Grand Canyon, in north-central Arizona. It is divided into three major sections: the North Kaibab Ranger District and the South Kaibab and are managed by the United States Forest Service. The South Kaibab is further divided into two districts, the Tusayan Ranger District, and the Williams Ranger District. Grand Canyon National Park separates the North Kaibab and the South Kaibab. The South Kaibab covers 1,422 square miles (3,680 km2) and the North Kaibab stretches over 1,010 square miles (2,600 km2). Elevations vary on the forest from 5,500 feet in the southwest corner to 10,418 feet at the summit of Kendrick Peak on the Williams Ranger District. The forest as a whole is headquartered in Williams.
Northern Arizona is an unofficial, colloquially-defined region of the U.S. state of Arizona. Generally consisting of Apache, Coconino, Mohave, and Navajo counties, the region is geographically dominated by the Colorado Plateau, the southern border of which in Arizona is called the Mogollon Rim.
The Coconino National Forest is a 1.856-million acre United States National Forest located in northern Arizona in the vicinity of Flagstaff. Originally established in 1898 as the "San Francisco Mountains National Forest Reserve", the area was designated a U.S. National Forest in 1908 when the San Francisco Mountains National Forest Reserve was merged with lands from other surrounding forest reserves to create the Coconino National Forest. Today, the Coconino National Forest contains diverse landscapes, including deserts, ponderosa pine forests, flatlands, mesas, alpine tundra, and ancient volcanic peaks. The forest surrounds the towns of Sedona and Flagstaff and borders four other national forests; the Kaibab National Forest to the west and northwest, the Prescott National Forest to the southwest, the Tonto National Forest to the south, and the Apache-Sitgreaves National Forest to the southeast. The forest contains all or parts of ten designated wilderness areas, including the Kachina Peaks Wilderness, which includes the summit of the San Francisco Peaks. The headquarters are in Flagstaff. There are local ranger district offices in Flagstaff, Happy Jack, and Sedona.
The Arizona Strip is the part of Arizona lying north of the Colorado River. The difficulty of crossing the Grand Canyon causes this region to have more physical and cultural connections with southern Utah and Nevada than with the rest of Arizona. The largest settlements in the Strip are Colorado City and Fredonia.
The Coconino Plateau is found south of the Grand Canyon and north-northwest of Flagstaff, in northern Arizona of the Southwestern United States.
The Kaibab Plateau is a plateau almost entirely in Coconino County, Arizona in the Southwestern United States. The high plain is also known as the Buckskin Mountain, Buckskin Plateau, and Kaibab Mountain.
The Arizona National Scenic Trail is a National Scenic Trail from Mexico to Utah that traverses the whole north–south length of the U.S. state of Arizona. The trail begins at the Coronado National Memorial near the US–Mexico border and moves north through parts of the Huachuca, Santa Rita, and Rincon Mountains. The trail continues through the Santa Catalina north of Tucson and the Mazatzal Mountains before ascending the Mogollon Rim north of Payson, eventually leading to the higher elevations of Northern Arizona and the San Francisco Peaks. The trail then continues across the Coconino Plateau and in and out of the Grand Canyon. The Arizona Trail terminates near the Arizona-Utah border in the Kaibab Plateau region. The 800-mile (1,300 km) long Arizona Trail was completed on December 16, 2011. The trail is designed as a primitive trail for hiking, equestrians, mountain biking, and even cross country skiing, showcasing the wide variety of mountain ranges and ecosystems of Arizona.
The Kaibab Limestone is a resistant cliff-forming, Permian geologic formation that crops out across the U.S. states of northern Arizona, southern Utah, east central Nevada and southeast California. It is also known as the Kaibab Formation in Arizona, Nevada, and Utah. The Kaibab Limestone forms the rim of the Grand Canyon. In the Big Maria Mountains, California, the Kaibab Limestone is highly metamorphosed and known as the Kaibab Marble.
The following is an alphabetical list of articles related to the U.S. state of Arizona.
Kendrick Peak or Kendrick Mountain is one of the highest peaks in the San Francisco volcanic field north of the city of Flagstaff in the U.S. State of Arizona and is located on the Coconino Plateau in Coconino County.
Arizona is a landlocked state situated in the southwestern region of the United States of America. It has a vast and diverse geography famous for its deep canyons, high- and low-elevation deserts, numerous natural rock formations, and volcanic mountain ranges. Arizona shares land borders with Utah to the north, the Mexican state of Sonora to the south, New Mexico to the east, and Nevada to the northwest, as well as water borders with California and the Mexican state of Baja California to the southwest along the Colorado River. Arizona is also one of the Four Corners states and is diagonally adjacent to Colorado.
O'Leary Peak is an extinct Pleistocene lava dome volcano within the San Francisco volcanic field, north of Flagstaff, Arizona, and to the northwest of Sunset Crater National Monument. A fire lookout tower was built on a subsidiary eastern peak. It has an elevation of 8,919 feet (2,719 m).
The Great Western Trail is a north-south long distance multiple use route which runs from Canada to Mexico through five western states in the United States. The trail has access for both motorized and non-motorized users and traverses 4,455 miles (7,170 km) through Arizona, Utah, Idaho, Wyoming, and Montana. Designated a National Millennium Trail.
The Hurricane Cliffs of southwest Utah and northwest Arizona are a red, limestone geographic feature, sets of cliffs along the western, eroded edge of the Kaibab Limestone; the cliffs are about 135-mi (217 km) long, with the south end terminus just north of the Grand Canyon.
Buckskin Mountain is a 16-mile (26 km) mountain ridge that spans from Coconino County, Arizona to Kane County, Utah in the United States, that is divided almost equally between the two counties.
Temple Butte, in the Grand Canyon, Arizona, USA is a prominence below the East Rim. The butte lies on the west bank of the south-flowing Colorado River. The outfall from the Little Colorado River, draining from the Painted Desert to the east and southeast, is about 2-mi upstream.
Isis Temple, in the Grand Canyon, Arizona, USA, is a prominence below the North Rim, and adjacent to Granite Gorge. The prominence lies north of the north bank of the west-flowing Colorado River and is just north of Middle Granite Gorge. The Trinity Creek and canyon flow due-south at its west border; its north, and northeast border/flank is formed by Phantom Creek and canyon, a west tributary of Bright Angel Creek; the creeks intersect about 3 mi southeast, and 1 mi north of Granite Gorge. The peak of Isis Temple is only ~202 ft lower than Grand Canyon Village.
The Hull Cabin was built in the late 1880s near the South Rim of the Grand Canyon by settler William Hull. The Hull family arrived in the area in 1880 and established a ranch in the area, raising sheep and building the Hull Tank, a large earth-banked reservoir for their stock. The Hulls branched out into prospecting and were among the first to take in tourists heading to the Grand Canyon.
