Question

difference between Crust and Mantle , igneous rocks and sedimentary rocks​

Answer 1

Answer:

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Answer 2

Answer:

1:

The crust is a chemically distinct layer at the surface of the Earth. Crustal material

contains lighter elements like Si, O, Al, Ca, K, Na, etc... Feldspars (Anorthite, Albite,

Orthoclase) are comon minerals in the crust (CaAL2Si2O8, NaALSi3O8 , KALSi3O8).

The crust may be divided into 2 types: oceanic and continental. Oceanic crust is

usually 5-10 km thick and continental crust is 33 km thick on average. Beneath the

crust is the mantle. The mantle is made up of Si and O, like the crust, but it contains

more Fe and Mg. Thus, Olivine (Fe2SiO4-Mg2SiO4) and pyroxene (MgSiO3-FeSiO3)

are abundant in the mantle. The mantle extends to the core-mantle interface at

approximately 2900 km depth. Thus, the mantle contains the lower portion of the

lithosphere, the asthenosphere, and the mesosphere. The crust is made of the upper

portion of the lithosphere.

2:

• Igneous rock is formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.

• Sedimentary Rocks formed by the deposition of material at the Earth's surface and within bodies of water. Sedimentation is the collective name for processes that cause mineral and/or organic particles (detritus) to settle and accumulate or minerals to precipitate from a solution.

Explanation:

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