Which of the following statements regarding river meanders is/are correct? 1. It is a U-shaped bend in a river. 2. An extremely tight meander is called a gooseneck; it is likely to become a cutoff, or oxbow lake, after a flood. 3. Tectonic uplift can cause a river to continue downcutting along its meandering course, producing incised or entrenched meanders.
A.1 only
B.1 and 2 only
C.2 and 3 only
D.1, 2 and 3✓ Correct
Explanation
All three statements are correct. A meander is a sinuous U-shaped bend in a river. An especially tight, narrow-necked meander is termed a gooseneck and tends to be cut off during floods, leaving behind an oxbow lake. When tectonic uplift rejuvenates a meandering river, it continues vertical downcutting along its sinuous course, producing incised or entrenched meanders such as those of the Colorado River.
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