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Granite Mountain (Arizona)
Granite Mountain () is a 7,626-foot (2,324 m) mountain located in Yavapai County, Arizona that covers roughly 12 square miles (31 km2). It was once known as Mount Gurley, for the first governor of the Arizona Territory, John A. Gurley. Its southwest face has a sheer granite cliff approximately 500 feet (150 m) high that is one of the best locations for rock climbing in the state of Arizona. It is located in the Granite Mountain Wilderness, which is administered as a part of the Prescott National Forest. The mountain stands at the northern end of the Sierra Prietas, and borders Skull Valley on the west, on the northwest by the Santa Maria Mountains, and east by the Williamson Valley.
==Geology==
Granite Mountain is composed of the Prescott Granodiorite, a 1.7 billion year-old stock intruded into Yavapai schist. Xenoliths of the schist are commonly found in the granodiorite. The gray granodiorite was a popular building stone in early-day Prescott. It was used to build the Yavapai County Courthouse and in many other older buildings around town, including Fort Whipple.〔 prepared for Earth Science Week. Copy available at Yavapai College library.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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