![]() ![]() With the addition of these dense materials, the Ozark terrain possesses greater resistance to weathering and erosion, resulting in more vertical drops, or waterfalls. The Ozarks are composed of sedimentary rocks containing high-density materials such as limestone and dolostone, in addition to the same sandstone, siltstone, shale, and chert found in the Ouachitas. ![]() Geometrical Classification is generally the more helpful tool.Īrkansas has two distinct mountain ranges that provide the required vertical drop in elevation to form a waterfall: 1) the Ozark Mountains, a series of plateaus that fills the northwestern corner of Arkansas and extends into Missouri, representing one of the largest mountain ranges between the Appalachians and the Rockies and 2) the Ouachita Mountains, located in the west-central portion of the state these are fold mountains that once reached heights of the present-day Rocky Mountains, but their peaks have worn away with age. This is a more exact scientific approach however, this provides minimal data regarding the appearance of the falls. The second method, Water Volume Classification, categorizes waterfalls purely on the amount of water flowing over a vertical drop. However, this method depends on individual interpretation, which results in inconsistencies within the defined categories. With the visualization these labels provide, a visitor will have an idea of the general appearance of a waterfall without seeing it. This method is helpful to identify falls for their visual qualities. Geometrical Classification categorizes waterfalls based on shapes and physical features. Although there are no definitive criteria, two methods have been developed to categorize waterfalls. Experts have different ideas about what constitutes a waterfall. Nature creates an array of different types of vertical water runoffs. Over time, this process is repeated, resulting in a series of stair-step waterfalls retreating up a hillside. This fallen rock crashes down into a pool of water where the water’s swirling action results in more erosion. Unsupported, the overhanging rock eventually collapses. Waterfalls often form as a stream flows over different bands of rock, with the soft rock eroding more quickly to undercut the hard rock. ![]()
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