Because different types of mineral deposits form in different environments, plate tectonics plays a critical role in the location of different environments, including our ocean floor. The knowledge of plate tectonics and the location of plate boundaries on the ocean floors could be used to locate valuable resources such as iron, copper and zinc. The ocean floor, not to mention the actual earth, is divided into three main layers: the core, the mantle and the crust. The core is further divided into the solid inner core and the liquid outer core. This layer is mostly iron and nickel. The mantle is divided into the lower and upper mantle and is composed mostly of iron, magnesium, silicon, and oxygen. The outermost layer, which contains all life on earth, is the crust. This layer is rich in oxygen and silicon as well as aluminum, iron, magnesium, calcium, potassium, and sodium. It is in between the crust and the mantle that we find tectonic plates. During the mining process the dredges dig up the ocean floor, damaging animal habitats and
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