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© 1990 Nature Publishing Group

Seismic imaging of upper-mantle structure with new evidence for a 520-km discontinuity

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Page 1: Seismic imaging of upper-mantle structure with new evidence for a 520-km discontinuity

© 1990 Nature Publishing Group

Page 2: Seismic imaging of upper-mantle structure with new evidence for a 520-km discontinuity

© 1990 Nature Publishing Group

Page 3: Seismic imaging of upper-mantle structure with new evidence for a 520-km discontinuity

© 1990 Nature Publishing Group

Page 4: Seismic imaging of upper-mantle structure with new evidence for a 520-km discontinuity

© 1990 Nature Publishing Group

Page 5: Seismic imaging of upper-mantle structure with new evidence for a 520-km discontinuity

© 1990 Nature Publishing Group

Page 6: Seismic imaging of upper-mantle structure with new evidence for a 520-km discontinuity

© 1990 Nature Publishing Group