Uinkaret volcanic field

Infobox Mountain
Name= Uinkaret volcanic field
Photo=Uinkaret TheExpanseOfTime NASA172332.jpg
Caption=
Elevation=1,555 m
Location=Arizona, USA
Range=
Prominence =
Coordinates = coord|36.38|N|113.13|W|type:mountain|format=dms
Topographic
USGS Mount Logan
Type=volcanic field
Age= 1.2 million years
Last eruption=1130 ± 75 years
First ascent=
Easiest route=

The Uinkaret volcanic field is an area of monogenetic volcanoes in northern Arizona, USA, located on the north rim of the Grand Canyon.

Lava flows from the Uinkaret volcanic field that have cascaded down into the Grand Canyon, damming the Colorado River, have been used to date the canyon's carving. [cite web | last = | first = | authorlink = | coauthors = | title = Grand Canyon National Park - Geologic Formations (U.S. National Park Service) | work = | publisher = U.S. National Park Service | date = 2007-03-29 | url = http://www.nps.gov/grca/naturescience/geologicformations.htm | format = | doi = | accessdate = 2007-05-24]

One lava flow, from Little Springs, south of Pliocene Mount Trumbull, has a cosmogenic helium age of 1300 +/- 500 years BP. Pottery sherds dated at between 1050 and 1200 AD were found within the Little Springs lava flow, which occurred about the same time as the Sunset Crater eruption in the San Francisco volcanic field on the South Rim.

Notable Vents

ee also

*List of volcanoes in the United States of America

References

External links

* [http://volcano.und.edu/vwdocs/volc_images/north_america/uinkaret.html Uinkaret Volcanic Field, Western Grand Canyon, Arizona] at Volcano World


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