The core of the Earth is primarily iron & this
... Like the outer 
core, the inner core is composed primarily of iron and nickel... [DOC] [TLE] CHAPTER 1The Earth i.. - Georgia State University [PAR] partial melting); and a thick, metallic core made primarily of iron (the outer portion 
... Physically, the uppermost layers of Earth are the rigid lithosphere (crust and... [DOC] [TLE] CRYSTAL AT THE CENTER OF THE EARTH: Anisotropy of Earth's ... [PAR] There's a giant crystal buried deep within the Earth, at the very center, more than 
... What scientists have pieced together comes primarily from seismic data.