Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate. The crust is the result of erupted mantle material originating from below the plate, cooled and in most instances, modified chemically by seawater. It is primarily composed of mafic rocks.
Dimensions: 2.75" x 45.75" x 45.75"
Materials: Foam, Resins, Tints, Dyes