ch16_2302 - Landforms Made by Running Water IG4e_16_opener...

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IG4e_16_opener IG4e_16_opener Landforms Made by Running Water
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Landforms Made by Running Water Fluvial Processes and Landforms Slope Erosion The Work of Streams Stream Gradation Fluvial Processes in an Arid Climate
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Fluvial Processes and Landforms fluvial landforms are shaped by the fluvial processes of overland flow and stream flow. Wherever rain falls, these processes act to create erosional and depositional landforms Figure 16.1, p. 547
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Slope Erosion soil erosion occurs when overland flow moves soil particles down-slope erosion is greatest on bare slopes of fine particles, carving rills and gullies a vegetation cover greatly reduces soil erosion Figure 16.3, p. 548
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Slope Erosion soil particles moved down-slope eventually reach the base of the slope, where they come to rest and accumulate in a thickening layer termed colluvium if not deposited as colluvium, sediment carried by overland flow eventually reaches a stream, is carried farther down-valley and may accumulate as alluvium (a stream-laid sediment deposit).
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The Work of Streams streams erode their beds and banks by hydraulic action, abrasion, and corrosion abrasion by stones on a bedrock riverbed can create deep depressions known as potholes Figure 16.6, p. 551
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ch16_2302 - Landforms Made by Running Water IG4e_16_opener...

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