1. This map is of an area in Indiana. What cycle of stream erosion is shown by t
ID: 290977 • Letter: 1
Question
1.
This map is of an area in Indiana. What cycle of stream erosion is shown by the White River?
Youthful
Rejuvenated
Mature
Old Age
2.
This is the same map from the above question except an area has been shaded green. What feature does it represent?
It is an area of subsidence caused by sinkholes.
This is an old river meander that was left high and dry as the river eroded downward.
It is an old lake bottom, a remnant from the last Ice Age.
It is a golf course.
32? 31 2 Williams WLLIAMS WHITE 0 Williams Ch 14Explanation / Answer
1. Mature
Explanation : From the diagram, it can be clearly seen that the river is meandering. A meander forms during the mature stage of a river. When a river leaves the mountains suddenly and encounter a sudden break in slope, it slows down. The volume of water is high but the gradient is low thus water cannot move at a faster rate and meanders develop. The frontal erosion is almost equivalent to lateral erosion.
2. This is an old river meander that was left high and dry as the river eroded downward.
Explanation : Meanders often cut off their necks to form U-shaped or crescent shaped meander cut offs or ox bow lakes which are free standing abd which later becomes abandoned by its stream and gets dry.
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