Question

Choose the correct sequence of formation of block mountains.

• A. Separation of tectonic plates -> Horsts and Graben -> Horsts formed into mountains.
• B. Separation of tectonic plates -> Horsts and Graben -> Graben formed into mountains.
• C. Horsts and Graben -> Separation of tectonic plates -> Horsts formed into mountains.
• D. Clashing of tectonic plates -> Horsts and Graben -> Horsts formed into mountains.

Answer 1

The correct option is A Separation of tectonic plates -> Horsts and Graben -> Horsts formed into mountains.

The formation of block mountains takes place in the following stages:
i) Internal forces lead to the separation of tectonic plates.
ii)This leads to upliftment and sinking of blocks of land.
iii)The uplifted part formed is known as horsts and the lowered part is known as graben.
iv)Block mountains are formed from horsts.