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Geology of the Grand Canyon: Weathering.
CORRASION.WEATHERING.The work of corrasion is limited to the cutting of narrow gashes in the strata, and the grinding up of the fragments brought into the river channels. The widening of…glacier
(Encyclopedia) glacier, moving mass of ice that survives year to year, formed by the compacting of snow into névé and then into granular ice and set in motion outward and downward by the force of…locust, in botany
(Encyclopedia) locust, in botany, any species of the genus Robinia, deciduous trees or shrubs of the family Leguminosae (pulse family) native to the United States and Mexico. The locusts have pendent…Dust Bowl
(Encyclopedia) Dust Bowl, the name given to areas of the U.S. prairie states that suffered ecological devastation in the 1930s and then to a lesser extent in the mid-1950s. The problem began during…batholith
(Encyclopedia) batholith, enormous mass of intrusive igneous rock, that is, rock made of once-molten material that has solidified below the earth's surface (see rock). Batholiths usually are granitic…Old Red Sandstone
(Encyclopedia) Old Red Sandstone, series of red and brown sandstones, conglomerates, and shales deposited in Wales and Scotland and in England near the Welsh and Scottish borders in the Devonian…Gilbert, Grove Karl
(Encyclopedia) Gilbert, Grove Karl, 1843–1918, American geologist, b. Rochester, N.Y., grad. Univ. of Rochester, 1862. When the U.S. Geological Survey was created in the Dept. of the Interior in 1879…weed
(Encyclopedia) weed, common term for any wild plant, particularly an undesired plant, growing in cultivated ground, where it competes with crop plants for soil nutrients and water. In their natural…The Grand Canyon: Facts, History & Profile
Top of Page Image Source: Getty ImagesFast Grand Canyon Facts Length: 277 miles (446 km) Width: 18 miles (29 km) at widest point Depth: 1 mile (1.6 km) deep Age: Estimated to be between 5-6…loess
(Encyclopedia) loessloesslĕs, lōˈəs, Ger. lös [key], unstratified soil deposit of varying thickness, usually yellowish and composed of fine-grained angular mineral particles mixed with clay. It is…Trending
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