alt Hacker NewsI seem to recall for some long-ago course that the 8,000m peaks are up around the compresssive limit so yoou couldn't really have a taller mountain.
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Jweb_Guru • today at 5:47 AM
Mostly true on Earth, but not on other planets with lower gravity, and AFAIK it depends on the rock type. Hence why you have Olympus Mons on Mars (or insanely tall ice mountains on Pluto, when that material couldn't form such a steep talus angle on Earth).
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In theory you can always have taller mountains if you just have a (exponentially!) wider base. But given all sorts of practical constraints, Earth mountains are pretty much limited to <10 km.