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There are three primary rock types in the earth's crust. Most of the crust consists of igneous rock. Metamorphic rock is either igneous or sedimentary rock that has changed form through heating and compression. The most common type of exposed rock is sedimentary, which forms from the conglomeration of sea, lake or river sediments, or from the bodies of tiny creatures, such as corals and limestone.
As for the total number of different types, there are hundreds. As for the total number of individual rocks, this changes as rock is cemented together or breaks apart, and I'm not going to bother estimating it here.
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What is the earhs crust made of?
the earths crust is made out of rocks
Where do metomorphic rocks form?
metamorphic rocks are formed in earths crust not on the surface
What is a fractured surface on the earths crust when a mass of rocks is in motion?
Fault
Why are there are almost no extrusive ultra basic rocks in earths crust?
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
What percent of earths crust is made up of sedimentary rocks?
Roughly 5%.
What is the earhs crust made of?
the earths crust is made out of rocks
What are the rocks that make up the earths crust?
the crust and the core
What exists on earths crust?
crief boy quez
What does rocks in earths mantle contain a higher percentage of what than rocks in earths crust?
iron and magnesium
What materials are the earths crust made of?
it is made of rocks
Where do metomorphic rocks form?
metamorphic rocks are formed in earths crust not on the surface
What are two rocks that can be found in the earths crust?
Basalt and limestone.
What makes close to 95 percent of the rocks of earths crust?
Silicates make up close to 95 percent of the rocks in the Earth's crust
Basic material of the Earth's crust?
The basic materials of the earths crust are; silicate rocks, primary granite, igneous, metamorphic, and sedimentary rocks.
Are sedimentary rocks evenly distributed through out the earths crust?
yes
Thin layers of rocks and minerals on earths surface called?
The crust.
What is a fractured surface on the earths crust when a mass of rocks is in motion?
Fault
