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Published December 1983 | public
Journal Article

Solid earth geophysics


Ten years ago seismologists were, or thought they were, putting the finishing touches on average Earth models, including the so-called radially symmetric reference Earth model, and were starting to devote their attention to lateral variations. It was clear, even then, that the mantle was heterogeneous everywhere, not just in the lithosphere and asthenosphere, but it was not clear how these anomalies related to surface tectonics.

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© 1983 Geological Society of America.

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