ESS200A
Prof. Jin-Yi Yu
Internal
Structure of the Earth
qThe Crust
It is inhomogeneous in both thickness and
compositions.
qThe Mantle
It is uniform in composition and formed of silicate materials
q The Core
* It is dominated by iron, along with small amounts of nickel.
* It is the source of Earth’s magnetic field.
* The outer core is in fluid form and the inner core is in solid form.
From The Blue Planet