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Hi, I hope this finds you well, and that no one has died who you hold precious. I recently tried using SONAR to map the ocean floor and it is amazing what I found. I discovered rifts on the ocean floor! I think that new rocky crust is being formed at the ocean ridges and spreading outwards. I also think that the crust was sinking down into Earth, forming ocean trenches. Three things that are really happening prove me right. • magnetic striping • age of the sea floor • sediment thickness.
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