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Lehmann discontinuity

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Lehmann discontinuity

The Lehmann discontinuity refers to an abrupt increase of P-wave and S-wave velocities at the depth of 220±30 km, discovered by seismologist Inge Lehmann. It appears beneath continents, but not usuall ...

Inner core

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Inner core

Earth's inner core is Earth's innermost part and is a primarily solid ball with a radius of about 1,220 km (760 mi), according to seismological studies. (This is about 70% of the Moon's ra ...

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