Geography, asked by yashdwivedi8546, 10 months ago

Answer the following questions in about 150 words.
(ii) Describe the nature and mode of origin of the chief types of rock at the
earth’s crust. How will you distinguish them?

Answers

Answered by Hamidamemon454
1

Answer:

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Explanation:

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Answered by babundrachoubay123
2

Types of rock in earth crust

Explanation:

The outer surface of earth is called as earth crust which contain different types of rocks like igneous,metamorphic and sedimentary rocks.

The mantle is present below the core and above the crust which are covered by ice or rocks.

The crust of the earth occupies less than 1%

The layer of oceanic crust is between 5 to 10 km which is made up of basalt,gabbbro and the layer of continental crust is 30 to 50 km thick that contain dense rocks.

As the depth increases,temperature also increases.

The crust form the lithosphere and the common rocks that are found on earth crust are usually contain oxides,chlorine,sulfur, fluorine etc.

The igneous rock is made up of larva that when gets cooled becomes solidified and form this type of rock appearance.Ex-Granite, basalt etc.

Metamorphic rocks are made up by transformation or metamorphosis of the pre exiting rocks.Ex-Marble, slates etc.

Sedimentary rocks are formed by deposition of minerals or organic particles on the oceanic floor or water bodies.Ex- Lime stone, sand stone etc.

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