Final answer:
Block mountains form through faulting when tectonic plates collide, pushing blocks of rock upwards to form mountain ranges.
Step-by-step explanation:
Block mountains are formed through the process of faulting, which occurs when tectonic plates collide. When two erasian plates converge, immense pressure is exerted, causing the crust to fold and uplift. As a result, large blocks of rock are pushed upwards, forming a mountain range. The Himalayas in Asia and the Sierra Nevada in North America are examples of block mountains.
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