You are here: Home / Topics / Interior of Earth Geography

Interior of Earth Geography

Filed under: Geography Earth on 2021-06-24 16:07:39
# The earth is made up of several concentric layers with one inside another.
# Crust – The uppermost layer over the earth’s surface.
# It is the thinnest of all the layers.
It is about 35 km. on the continental masses and only 5 km. on the ocean floors.
# The main mineral constituents of the continental mass are silica and alumina. It is thus called si-al (si-silica and al-alumina)
The oceanic crust mainly consists of silica and magnesium; it is therefore called sima (si-silica and ma-magnesium)
# Mantle – Just beneath the crust is the mantle which extends up to a depth of 2900 km.
# Core – The innermost layer is the core with a radius of about 3500 km.
# It is mainly made up of nickel and iron and is called nife (ni – nickel and fe – ferrous, i.e. iron).
# The central core has a very high temperature and pressure.
About Author:
S
Shyam Dubey     View Profile
If you are good in any field. Just share your knowledge with others.