Why are the rocks in the western US all red. I know it is iron but why is there so much iron in the west?
In: 2
Ancient Lakes basically.
Over millions of years ancient mountains eroded, and the iron deposits went into the lakes and settled at the bottom. Eventually due to changes in geography the lakes dried up and got covered with other sediment. Then new mountains formed and eventually we developed the technology to find and mine the iron. So we found the ancient lakes and all that iron deposits where the lakes were.
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