The upper part of this region mainly consists of magnesium-iron silicates such as pyroxene ("pie-ROX-een") and olivine ("olive een").
The D double prime layer lies in the lowest part of this region. The upper part of this region mainly consists of magnesium-iron silicates such as pyroxene ("pie-ROX-een") and olivine ("olive een"). This layer extends to a depth of 2890 kilometers and contains more than half the Earth's mass. For 10 points, name this molten layer of the Earth that is found between the crust and the core.
The D double prime layer lies in the lowest part of this region.
{mantle}