The distribution and forms of carbon inside Earth

Deep Carbon Observatory

This figure depicts the distribution and forms of carbon inside Earth. Carbon has low solubility in mantle minerals; hence, it occurs primarily in the form of gas (red circles), fluids or melts (orange circles), and accessory solid phases (green circles), including diamonds (octahedra).

This illustration was created with the guidance of Catherine Mccammon, Valerio Cerantola, Vincenzo Stagno, and others.

Read more about the science.