Question

how are block mountains and rift valleys formed ?.It should be both block mountains and rift valleys .Please it is urgent ​

Answer 1

Answer:

Rift valleys are thought to have been developed either from the action of tensional forces in the crust or from the action of compressional forces. ... Many feel that the rift valley (graben) is the part that moves, due to the force of gravity. The block mountain (horst) is left standing higher above the sunken graben.

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Answer 2

Explanation:

Block Mountains : At times deep cracks or faults develop through the the crust of the Earth due to some Earth movements. The blocks of land lying between the cracks are pushed up to form mountains in between. Blocks that are pushed up are termed horsts.

Rift Valley : The land that is pushed down forms Rift valley are also called graben ..

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