Inner Core Outer Core Lower Mantle Upper Mantle Crust Moho 6371Km 5000Km 2900 Km 0 Km 1050 Km asthenosphere Gutenburg Moho boundary is between 25 and.

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Inner Core Outer Core Lower Mantle Upper Mantle Crust Moho 6371Km 5000Km 2900 Km 0 Km 1050 Km asthenosphere Gutenburg Moho boundary is between 25 and 60 km deep beneath the continents and between 5 and 8 km deep beneath the ocean floor.

Moho. The boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. Also termed the Mohorovicic' discontinuity after the Croatian seismologist Andrija Mohorovicic' ( ) who discovered it. The boundary is between 25 and 60 km deep beneath the continents and between 5 and 8 km deep beneath the ocean floor.crustmantle