3 ms·
I understood from a childhood book that the magic making Manhattan possible is that the tallest skyscrapers actually attach to a granite bedrock 30m below groun
by rich_sasha 3y ago
I understood from a childhood book that the magic making Manhattan possible is that the tallest skyscrapers actually attach to a granite bedrock 30m below ground level.
Is this wrong (damn you "first encyclopaedia for children") or would that imply that somehow the granite bedrock itself is sinking?
- schiffern 3y agoThe granite bedrock itself can indeed sink/rise, if you add/remove large amounts of weight on top. https://en.wikipedia.org/wiki/Isostatic_depression https://en.wikipedia.org/wiki/Isostatic_depression https://en.wikipedia.org/wiki/Isostatic_rebound https://en.wikipedia.org/wiki/Isostatic_rebound