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Moho
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Figure 25: Cross section of a convergent plate boundary involving a collision between two continental plates near a Himalaya-type mountain chain. Earth's lithosphere and upper mantle
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Moho

geology
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Also known as: Mohorovičić discontinuity
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Or:
Mohorovičić discontinuity
Key People:
Andrija Mohorovičić

Moho, boundary between the Earth’s crust and its mantle. The Moho lies at a depth of about 22 mi (35 km) below continents and about 4.5 mi (7 km) beneath the oceanic crust. Modern instruments have determined that the velocity of seismic waves increases rapidly at this boundary. The Moho was named for Andrija Mohorovičić.

This article was most recently revised and updated by John P. Rafferty.