The Core of the Matter is the Matter in the Core

18 03 2008

Using both newly acquired data and legacy data, geologists have confirmed the discovery of the Earth’s innermost core, and have created a three-dimensional model that describes the seismic anisotropy and texturing of iron crystals within the inner core.

Composed mainly of iron, Earth’s core consists of a solid inner core about 2,400 kilometers in diameter and a fluid outer core about 7,000 kilometers in diameter. The inner core plays an important role in the geodynamo that generates Earth’s magnetic field.

The solid inner core is elastically anisotropic; that is, seismic waves have different speeds along different directions.

The project took place at the University of Illinois.

Read the whole article here.