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The Mountain Paradox: Why Earth's Ranges Seem So Young
This video delves into a compelling geological paradox: if continental plates move only centimeters per year, why do many of Earth's massive mountain ranges, like the Rockies and Andes, appear surprisingly young? The speaker highlights the crucial role of rapid erosion and downcutting, challenging conventional timelines.
He explains how the acceleration of erosion at higher elevations leads to vast volumes of sediment being transported to the oceans. This process is so efficient that at current rates, entire continents could be flattened into a "peneplain" within 10-30 million years, suggesting past periods must have involved dramatically accelerated tectonic activity and mountain uplift.
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