Geosphere is considered as one of the portions of the Earth's system which
covers the Earth’s interior, minerals and rocks, the different landforms and
the processes that forms the surface of the Earth. It is the external part of
the Earth that constitutes the crust and upper mantle. The geosphere or lithosphere is about 35 mi (55km) thick
beneath the ocean and up to approximately 124 mi (200 km) thick beneath the
continents.
(See attached file for more details about geosphere)
