Earth's outer core
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Earth's outer core is a fluid layer about 2,260 km thick, composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. The outer core begins approximately 2,889 km
An artist's illustration of what Earth might have looked like early in its formation.
Earth's mantle
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Earth's mantle is a layer of silicate rock between the crust and the outer core. It has a mass of 4.01×1024 kg and makes up 86% of the mass of Earth. It has a thickness of 2,900 kilometers making up a
Earth's outer core
…outer core is a fluid layer about 2,260 km (1,400 mi) thick, composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. The outer core begins approximately 2,889 km (1,795 mi) beneath Earth's surface at the core-mantle boundary and ends 5,150 km (3,200 mi) beneath Earth's…
Green xenoliths of peridotite from the mantle are surrounded by black volcanic lava. These peridotite xenoliths were carried upward from the mantle by molten magma during a volcanic eruption in Arizona.