Geography • World GeographyHard
Analyze the tectonic genesis and structural evolution of the Alpine-Himalayan mountain belt: Which of the following geological processes primarily formed this continuous young fold mountain system extending from Western Europe through the Middle East to Southeast Asia?
A. Rifting and continental breakup of the ancient Pangea supercontinent along passive margins
B. Collision between the African, Arabian, and Indian continental plates with the southern margin of the Eurasian plate✓ Correct Answer
C. Subduction of oceanic crust beneath passive island arc chains in the central Pacific basin
D. Extensive basaltic fissure eruptions forming vast volcanic trappean plateaus over geologic epochs
💡 Solution & Explanation
The Alpine-Himalayan belt is a young fold mountain system created by continent-continent tectonic convergence, where the northward-drifting African, Arabian, and Indian plates collided with the Eurasian plate, closing the ancient Tethys Ocean and crumpling sedimentary strata. Passive margins and rifting form ocean basins, whereas basaltic plateaus result from effusive volcanic activity. Mountain building involves intense crustal shortening and metamorphism.
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