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The oldest rocks in Arizona likely date to the late Archean or early Proterozoic, although evidence of earlier geology was overwritten during the Yavapai orogeny and the Mazatzal orogeny—major mountain building events 1.8 to 1.6 billion years ago.
The Arizona Geological Survey (AZGS) was established by the Arizona Legislature to investigate and describe Arizona's geology and to educate and inform the public regarding its geologic setting. Each year since 1915, AZGS has released geologic maps, formal reports, and other geology-related publications.
The meta-sedimentary rock along with the granite batholith that forms Black Mountain are remnants of what laid hidden beneath a sea and underground, that are now exposed by headward erosion that continues northward today into Arizona's Transition Zone. The highly shortened and foliated phyllite began as a mudstone which was metamorphosed to shale.
Navajo Upper Antelope Canyon is a slot canyon in the American Southwest, on Navajo land east of Lechee, Arizona.It includes six separate, scenic slot canyon sections on the Navajo Reservation, referred to as Upper Antelope Canyon (or The Crack), Rattle Snake Canyon, Owl Canyon, Mountain Sheep Canyon, Canyon X [4] and Lower Antelope Canyon (or The Corkscrew). [2]
The location of Arizona in the United States. 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.
Pages in category "Geology of Arizona" The following 26 pages are in this category, out of 26 total. ... Geological history of the Chiricahua Mountains;
Mazatzal Group (Arizona) The Mazatzal Group is a group of geologic formations that crops out in portions of central Arizona , US. Detrital zircon geochronology establishes a maximum age for the formation of 1660 to 1630 million years ( Mya ), in the Statherian period of the Precambrian . [ 1 ]
The largest insects in geologic history lived during the Pennsylvanian. [33] Giant salamander-like amphibians left behind footprints near Lawrence, Kansas that would later fossilize. [ 34 ] Fossil footprints from this time period were also preserved in eastern states like Alabama, Georgia, West Virginia, Ohio, and Pennsylvania where ...