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why is that, even kids always draw mountains with a pointy top. why are mountains not nice and flat on top?
Another question comes to mind - do mountains actually hold the crust of the Earth together to stop it shaking about from the convection currents below?
OK. But do the mountains not act like tent pegs with their environment? As a sort of firmament that stops or dampens down further vibration from the collision of the tectonic plates?
why are most mountain tops pointy?
Quote from: OPwhy are most mountain tops pointy?On a recent tour of Canada and Alaska, our guide pointed out that there is a mix of "pointy" and "rounded" mountain tops in this part of the world.The mountain chain on the west of Canada and USA is formed by the collision of tectonic plates, so the mountains are still actively growing (and eroding).But the difference in shape is due to the depth of the ice sheet in the last ice age, which covered most of North America - and, presumably the ice ages before the most recent one, too, although the most recent one has erased most information about previous ice ages.- The ice sheet (and the boulders it carries) grinds away at the rock, rounding out the valleys and smoothing the mountain sides. - If the mountain was tall enough to project above the ice sheet, the pointy top remains intact- If the mountain was a bit shorter, and beneath the depth of the ice sheet, the pointy top is ground down to a more rounded shape.- Getting up close to rocks exposed by recent glacial retreat showed deep gouge marks where boulders were scraped across the bedrock.By the end of the tour, I could estimate the depth of the ice sheet by looking at the shapes of the mountain tops.