My question stems from archeologists that say there’s evidence of water erosion on the Sphinx, however, that’s just speculation. There are though settlements and sites in Iraq and Iran that used to be river basins and are now desert. So I just don’t understand how they could use any kind of wear marks in any stone foundation or bedrock cause of wind erosion. I get the example look at the Grand Canyon, but that’s millions of years, scientists today seem to be able to get within 1000 of years and I don’t understand how they can tell the difference between.
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It is because since water erosion is so slow and predictable that when a certain amount of material is removed, as long as you know how much was removed, as well as how much water passes there you can easily average out how long it would take. Keep in mind that the erosion on the sphinx occurs slower than that of the Grand Canyon because the grand canyon is a constant river and the sphinx get occasionally rained on.
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