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What is the main rock that forms the earth's crust out of the three types of rocks?
Wiki User
∙ 10y ago
If this is a test question, beware! The most common answer served up by public education would be 'igneous rock'. However, the bulk of crustal rock is metamorophic. The reason for this is fairly simple: rock metamorphoses at higher temperature and pressure, both of which increase significantly with depth from the surface. Since oceanic crustal rock is on average 5 miles in depth, and continental crust is on average 30 miles in depth, the bulk of the crustal rock is exposed to great pressures and temperatures. When it is written that oceanic crust is mainly basalt, an igneous rock, and continental crust is mainly granite, also an igneous rock, it is mainly in reference to their chemical composition, not their classification by type. Warning: be prepared to back up your 'metamorphic' answer.
Wiki User
∙ 10y ago
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This is the thinest layer of the earths crust?
the crust is the thinnest of the three. the thinnest on the crust is the LITHOSPHERE
What are three landforms produced by compression in the earths crust?
Mountain ranges are what is formed by compression in the earths crust. The Himalayas, the Alps, and the California Coast Range are three examples of landforms produced by compression.
How is the earth's crust different from the mantle in three ways?
The mantle is under the earth crust and is made of mostly peridotite, which is a denser rock than that of the igneus, metamorphic and sedimentary rocks found in the crust. The crust ranges in temperature from 200 - 400 degrees Celsius the furthur towards the earths core one goes. The mantle however ranges in temperature from 500 - 900 degrees Celsius the furthur towards the earths core one goes. The mantle has two layers and upper layer and a lower layer; whereas the crust has only one layer.
What are the three layers of the mantle?
Lithosphere is the layer clostest to the earths crust. It is the layer that contains the sial and sima. Asthenosphere is the next layer clostest to the earths crust. Mesosphere is the inner most layer of the mantle than it goes to the core... Outer core, and inner core
What are three words that describe earths mantle?
It's only soft and plastic in that it is not as hard as the brittle rock of the crust and uppermost mantle.
What are the three mayor faults?
Faults are surfaces along the earths crust in which rocks have been fractured and displaced. There are three types of faults: strike-slip, normal and reverse.
This is the thinest layer of the earths crust?
the crust is the thinnest of the three. the thinnest on the crust is the LITHOSPHERE
What three elements make up earths crust?
Water Earth (Dirt) and Rocks
What is three main of earths layers?
Crust, mantle, and core
What is is earths three main layers?
Crust, mantle, and core
What are Earths three main layers?
Crust, mantle, and inner core.
What are three events that change the earths crust slowly?
Erosian, weathering.
Why there are no sedimentery rocks on earth crust?
The Earth's crust does have sedimentary rocks in it's structure - limestone, slate, chalk, are three examples of commonly found sedimentary rocks.
What are three landforms produced by compression in the earths crust?
Mountain ranges are what is formed by compression in the earths crust. The Himalayas, the Alps, and the California Coast Range are three examples of landforms produced by compression.
What rock in the lithosphere called?
The lithosphere consists of the crust and upper mantle.
What are three parts that make up earths mantle?
The three parts that make up the Earths mantle are the crust, core, and mantle.
What are the different types of earthquakes?
I think there are three types of earthquakes one is the earths crust
