Geology of Arizona - Wikipedia
Southern Arizona was uplifted and experienced volcanic eruptions, which deposited high silica ash to the north as the Chinle Formation, which created the petrified wood of Petrified Forest National Park. Through the Jurassic, a large coastal desert similar to the modern Sahara or Namib desert occupied northern Arizona into Utah.
Geologic Map of Arizona
Rocks of this map unit are largely restricted to six areas widely distributed in Arizona: San Francisco and Uinkaret volcanic fields in northern Arizona (0-4 Ma); Springerville (0-4 Ma) and San Carlos (0-2 Ma) volcanic fields in east-central Arizona; and San Bernardino (0-1 Ma) and Sentinel (1-4 Ma) volcanic fields in southern Arizona.
The Geologic Origin of the Sonoran Desert - Arizona-Sonora …
The Sonoran Desert's southeastern edge is defined by Mexico's Sierra Madre Occidental, a tall, mountainous accumulation of 30-million-year-old volcanic rocks, which stand exposed in the cliffs of the pine-covered country of Barranca del Cobre (Copper Canyon) of Sonora-Chihuahua.
Interactive map of the geology of Arizona | American …
The Arizona Geological Survey's website hosts an interactive map of the geology of Arizona. Users can select individual units to see brief descriptions, as well as stratigraphic relationships and depositional environments for sedimentary rocks.
Map & Database Services - AZGS
A StoryMap tour of 30 prominent geologic and archaeological features near Flagstaff, Arizona
Two very different types of landscapes occur in Arizona: the Basin and Range Province of southwestern Arizona and the Colorado Plateau Province of northern Arizona, with a Transition Zone between them (fig. 1). The present topo-graphic differences between these provinces result in major contrasts in the distribution of population, agriculture, in-
Geoheritage Tour of Southern Arizona | e-Magazine of the AZ Geological …
Sep 26, 2018 · Our new interactive Geoheritage Tour of Southern Arizona showcases a handful of the spectacular geologic feature within easy driving distance of downtown Tucson. Geologic features and related sites – museums and mining communities - are organized under three tabs: • Within 15-mile radius of Tucson • From 15- to 75-mile radius
Geologic map of the Tucson Mountains Caldera, southern Arizona
Jan 1, 1993 · Geologic map of the Tucson Mountains Caldera, southern Arizona. DOI. 10.3133/i2205. Authors. P. W. Lipman. Publication Type. Report. Publication Subtype. USGS …
Geology of the Tucson Mountains - U.S. National Park Service
Jan 19, 2024 · How it Came to Be. The oldest rocks found in the area, although not directly in the park, are granites and metamorphic rocks that represent the original crust of Southern Arizona. These rocks are approximately 1.7 billion years old and belong to an era of geologic times known as Precambrian.
Earth Fissures, Subsidence & Karst in Arizona - AZGS
Earth Fissures in South-Central Arizona. Some arid valleys of central and southeastern Arizona are home to earth fissures: pervasive cracks that occur on valley floors that result from basin subsidence associated with extensive groundwater withdrawal.