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Geological history: When did the mountain building (orogeny) of the Himalayas begin? Choose the geological time/period most associated with the start of Himalayan orogeny due to India–Eurasia collision. Choose the correct option.

Q: Geological history: When did the mountain building (orogeny) of the Himalayas begin? Choose the geological time/period most associated with the start of Himalayan orogeny due to India–Eurasia collision. Choose the correct option.

Reasoning The Himalayas began forming after India collided with Eurasia, with main phases from the Tertiary (especially Eocene–Miocene). Uplift continued subsequently, but initiation is tied to the Tertiary. Final Answer Tertiary period (Cenozoic).

Difficulty: Easy

Tertiary period (Cenozoic)
Precambrian
Jurassic (Mesozoic)
Quaternary (Late Cenozoic only)

Correct Answer: Tertiary period (Cenozoic)

Explanation:

Reasoning

The Himalayas began forming after India collided with Eurasia, with main phases from the Tertiary (especially Eocene–Miocene). Uplift continued subsequently, but initiation is tied to the Tertiary.

Final Answer
Tertiary period (Cenozoic).

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