Geologic Processes(地质学过程) Crust(地壳)- Extremely thin, less-dense soil Mantle(地幔)- Makes up majority of earth Oceanic crust Uppermost mantle Inner portion is sAid km是 Asthenosphere (part of mantle) 200km core mantle continues downward Lithosphere:岩石圈 ter portion Capable of flow Asthenosphere:岩流圈 (the plastic louter layerGeologic Processes (地质学过程 ) • Crust (地壳） - Extremely thin, less-dense soil. • Mantle（地幔） - Makes up majority of earth. Lithosphere: 岩石圈 Asthenosphere: 岩流圈 Surrounds core of iron；Inner portion is solid Outer portion capable of flow (the plastic outer layer )