White Tank Mountains
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The White Tank Mountains are a
mountain range A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have arise ...
in central
Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...
. The mountains are on the western periphery of the
Phoenix metropolitan area The Phoenix Metropolitan Area – also the Valley of the Sun, the Salt River Valley, or Metro Phoenix (known by most locals simply as “the Valley”) – is the largest metropolitan area in the Southwestern United States, centered on the city ...
, primarily flanked by the suburban cities of Buckeye to the southwest, and Surprise to the northeast. The mountain range is home to the White Tank Mountain Regional Park and is a regional recreation hub. The range, often referred to simply as the White Tanks, is a moderate-sized mountain range whose peaks rise to an elevation around . The range consists of a series of numerous ridges and canyons, and as such, lacks a single, prominent peak. The highest point in the range, at an elevation of , is Barry Goldwater Peak. The mountain range was formed through
tectonic Tectonics (; ) are the processes that control the structure and properties of the Earth's crust and its evolution through time. These include the processes of mountain building, the growth and behavior of the strong, old cores of continents ...
activities as part of a
detachment fault A detachment fault is a gently dipping normal fault associated with large-scale extensional tectonics. Detachment faults often have very large displacements (tens of km) and juxtapose unmetamorphosed hanging walls against medium to high-grade me ...
sometime in the mid-
Tertiary Tertiary ( ) is a widely used but obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start ...
period, about 30 million years ago. Fairly young in geologic terms, it has not been subject to the forces of
erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is dis ...
for long and retains an extremely rugged topography composed of rocky fault ridges and deep canyons. During seasonal heavy rainfall, accumulated water tends to rush rapidly through the steep canyons, over time scouring out a number of depressions or "tanks" in the white
granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies under ...
near the base of the mountains. These white tanks are the source of the mountains' name. Image:Waterfall pool - "White tank" in the White Tank mountains, Arizona.jpg, Granite "white tank" in the White Tank Mountains, AZ, USA Image:Waterfall in the White Tanks Mountains, Arizona.jpg, The White Tanks waterfall runs only immediately after rainfall Image:Spiderweb petroglyph on the Waterfall Trail in the White Tank Mountains, Arizonia.jpg, Web-like petroglyph on the White Tank Mountain Regional Park Waterfall Trail Image:Chipping petroglyph on Waterfall Trail in the White Tank Mountains.jpg, Chipping petroglyph on the White Tank Mountain Regional Park Waterfall Trail File:White Tank Mts SW01.jpg, Petroglyph covered boulders


References

{{Authority control Mountain ranges of the Sonoran Desert Mountain ranges of Maricopa County, Arizona Mountain ranges of Arizona