Comb Ridge

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File:Comb Ridge Utah 2020.jpg
Another oblique view looking in approximately the opposite direction as the above photo

Comb Ridge (Template:Langx)[1] is a linear north to south-trending monocline nearly 80 miles long in Southeastern Utah and Northeastern Arizona. Its northern end merges with the Abajo Mountains some eleven miles west of Blanding. It extends essentially due south for Script error: No such module "convert". to the San Juan River. South of the San Juan the ridge turns to the southwest and is more subdued in expression as it extends for an additional Script error: No such module "convert". to Laguna Creek Script error: No such module "convert". east of Kayenta, Arizona.[2][3]

It was designated a National Natural Landmark in 1976 as the only North American location of tritylodont fossils.[4] Parts of the ridge in Utah are protected as part of the Bears Ears National Monument.[5]

Geology

The geologic formations involved in the east dipping strata of the fold include the Jurassic aged Navajo Sandstone, Kayenta Formation, Wingate Sandstone, Chinle Formation, Triassic Moenkopi Formation and Permian Organ Rock Formation. The structure is the surface expression of a deep fault along the east margin of the Monument Uplift.[2]

History

Traces of the Ancestral Puebloan culture can be found along the southern part of the ridge where it follows Chinle Wash. The Macomb and Hayden expeditions in 1869 and 1874–1876, respectively, were the first to publish maps and descriptions of this feature.[6] The ridge and adjacent Butler Wash were given their current names in 1884, by P. Holmann.[6][7][8]

Numerous cliff dwellings are found along the ridge.

File:WolfmanPanelUtah-AttributeAs-PhilKonstantin.jpg
Wolfman Panel petroglyph
File:Comb Ridge from US 163.jpg
Panorama of Comb Ridge from US Highway 163

See also

References

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  1. Linford, Laurence D. Navajo Places: History, Legend, Landscape, University of Utah Press, Salt Lake City, UT 2000.
  2. a b Geosights, Comb Ridge, San Juan County, Utah, May 2012, pp. 9–11 Script error: No such module "webarchive".
  3. USGS 30x60 quadrangle topographic maps: Blanding, Utah-Colorado; Bluff, Utah-Colorado; Rock Point, Arizona-New Mexico; Kayenta, Arizona
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  5. Obama Designates Two New National Monuments, Protecting 1.65 Million Acres. Davenport, Coral. The New York Times, 28 December 2016
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External links

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