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The Shinarump Conglomerate is a highly resistant coarse-grained sandstone and pebble conglomerate [1] (minor or major conglomerates are a typical base layer after unconformities or disconformities; the Shinarump is a major conglomerate) with rare lenses of mudstone, sometimes forming a caprock because of its hardness, cementation, and erosion resistance. [2]
The West and East Mitten Buttes (also known as the Mittens) are two buttes in the Monument Valley Navajo Tribal Park in northeast Navajo County, Arizona. When viewed from the south, the buttes appear to be two giant mittens with their thumbs facing inwards. The Mittens are about 0.6 mi (0.97 km) from the Arizona – Utah state line and West ...
Thus the Arroyo de Alamillo Formation is siltstone, ripple-laminated sandstone, and lesser dolomitic limestone, in contrast with the eolian beds of the De Chelly Formation, and the Los Vallos Formation is 42% sandstone, 28% siltstone, and 24% gypsum, in contrast with the thinly bedded sandstone of the San Ysidro Formation. [10]
U.S. National Monument. Canyon de Chelly National Monument (/ dəˈʃeɪ / də-SHAY) was established on April 1, 1931, as a unit of the National Park Service. Located in northeastern Arizona, it is within the boundaries of the Navajo Nation and lies in the Four Corners region. Reflecting one of the longest continuously inhabited landscapes of ...
The Three Sisters are iconic De Chelly Sandstone spires on the southeast tip of Mitchell Mesa. [8] The South Sister is the highest (6,269-ft-elevation) with a 449-ft rise. [ 9 ] The slightly lower North Sister (6,269-ft-elevation) rises 440-ft, [ 10 ] and the Middle Sister (6,100-ft-elevation) has a 280-ft rise. [ 11 ]
In a few locations in the southernmost Chama Basin, there is a tongue of De Chelly Sandstone between the Arroyo del Agua and Shinarump. [1] The formation is 58% siltstone and 34% sandstone, with minor conglomerate and calcrete (each about 4%). The siltstone beds also contain numerous calcrete nodules, and they form thick slopes between thin ...