How are the following plains formed?
(a) Structural plains.
(b) Depositional plains.
Answers
Answer:
Structural Plains
These plains are mainly formed by the upliftment of a part of the sea floor or continental shelf. .The structural plains may also be formed by the subsidence of areas.
Depositional Plains
These plains are formed by the deposition of materials brought by various agents of transportation such as rivers, wind, waves, and glaciers. Their fertility and economic relevance depend greatly on the types of sediments that are laid down.
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a)Structural plains:Structural plains are created by uplifting of a large landmass due to Diastrophic movements
e.g. plain of U. S.A. Erosionalplains are formed by eroding highlands into plain areas.
b)Depositional Plains: Dipositional plains were formed by the deposition of materials brought by various agents of transportation such as rivers, wind, waves, and glaciers. Their fertility and economic relevance depend greatly on the types of sediments that are laid down.
eg .River deposition , wind deposition, Marine disposition
