Describe the Composition of the Mantle and Crust.
Answer Our Earth is mainly composed of four layers crust mantle and inner core and outer core. Other common silicate minerals are quartz 12 pyroxenes 11 amphiboles 5 micas 5 and clay minerals 5. The Composition And Structure Of Earth Physical Geography Core mantle and crust are divisions based on composition. . Its mass of 401 1024 kg is 67 the mass of the Earth. It has a mass of 401 1024 kg and thus makes up 67 of the mass of Earth. The mantle is hot and represents about 68 percent of Earths mass. The highest temperatures occur where the mantle material is in contact with the heat-producing core. It has a thickness of 2900 kilometres 1800 mi making up about 84 of Earths volume. It is several hundred miles in depth and like the Earths crust contains various types of minerals. The major constituent elements of the mantle are Silicon and Magnesium and hence it is also termed as SIMA. The rock in the top port...