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Comb Ridge
Comb Ridge (〔Linford, Laurence D. Navajo Places: History, Legend, Landscape, University of Utah Press, Salt Lake City, UT 2000〕) is a linear north to south-trending monocline nearly 80 miles long in southeast Utah and northeast Arizona. Its northern end merges with the Abajo Mountains some eleven miles west of Blanding. It extends essentially due south for 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 to Laguna Creek east of Kayenta, Arizona.〔(''Geosights, Comb Ridge, San Juan County, Utah,'' May 2012, p. 9-11 )〕〔USGS 30x60 quadrangle topographic maps: Blanding, Utah-Colorado; Bluff, Utah-Colorado; Rock Point, Arizona-New Mexico; Kayenta, Arizona〕 It was designated a National Natural Landmark in 1976 as the only North American location of tritylodont fossils.〔(【引用サイトリンク】url=http://www.nature.nps.gov/nnl/site.cfm?Site=CORI-AZ )〕 ==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.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Comb Ridge」の詳細全文を読む
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