Oceanic Crust

Difference between Oceanic and Continental Crust

April 1, 2016

The oceanic crust is composed of dark, iron-rich rock similar to basalt. It is high in silica and magnesium, that is why called SIMA. It is often distinguished from the mantle by having more silica. This implies that Oceanic crust is more basaltic. Since Magnesium is denoted...