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The type of dune which is short lived is _____________

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The type of dune which is short lived is _____________

(a) Barchans

(b) Sigmoidal

(c) Transverse dunes

(d) Fixed dune

I got this question in an interview for internship.

This question is from Geological Work of Wind in portion Geological Work of Natural Resources of Engineering Geology

1 Answer

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Right option is (a) Barchans

The explanation is: Most of the dunes are migratory in nature and among all, Barchans are especially known to move ahead at the rate of 25 to 250 meters a month. Hence barchans are said to be short-lived relative to other dunes.

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