Question

How do scientist uses seismic waves to know these earmuffs are located in the mantle

Answer 1

Then the scientists studied how this mineral behaved. For example, they looked into how dense bridgmanite becomes and how much it squashes. The team then compared these traits to what is known about the blobs themselves.

This research showed that in the lab, bridgmanite behaves much as does the mineral seen in the mantle’s blobs. The scientists also showed that bridgmanite isn’t rigid enough to hold together as an intact blob without help from something else. “This challenges the assumption that these piles are self-supporting,” Jackson says. “It’s evidence that there is something else propping them up.”

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