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  1. Superstition Mountain (Yavapai: Wi:kchsawa, O'odham: Gakoḍk) is a prominent mountain and regional landmark located in the Phoenix metropolitan area of Arizona, immediately east of Apache Junction and north of Gold Canyon.

  2. Some geologist believed Superstition Mountain is the remains of a large collapsed caldera. This caldera has experienced three basic geologic stages in its evolution. The first stage involved the formation of dacite cones on a granitic basement complex more than twenty-nine million years ago. This resulted from magma

  3. Following a system established by earlier surficial geologic mapping projects located along the Gila River (Huckleberry, 1992, 1993), three primary symbols are used to distinguish geomorphic surfaces in the Superstition Mountain piedmont area based on lIMy=1,000,000 years, 1 Ma=1 My beforepresent; 1 ky =1,000 years; 1 ka =1 kybeforepresent;

  4. The geology of the Superstition Wilderness Area can be divided into three distinct categories. They include (1) rock type, (2) structure and (3) process. The rock type consists primarily of extrusive igneous rocks associated with volcanism.

  5. Superstition Mountain is a resurgent caldera, which formed as a volcanic collapse feature that filled with volcanic ash and lava flows in a series of violent eruptions between about 25 million and about 18 million yeara ago.

  6. Surficial geologic mapping of the Superstition Piedmont involved four stages. The first stage was the use of aerial photography to distinguish geological surfaces.

  7. The Superstition Mountains (Yavapai: Wi:kchsawa) is a range of mountains in Arizona located to the east of the Phoenix metropolitan area. They are anchored by Superstition Mountain, a large mountain that is a popular recreation destination for residents of the Phoenix, Arizona, area.

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