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What rock is formed from pieces of other rocks?
Sedimentary rock is formed from pieces of other rocks, minerals, and organic materials that have been compacted and cemented together over time. Examples of sedimentary rocks include sandstone, shale, and limestone.
What is hornfel rock made of?
honfel rocks are made of already existing rocks formed from heat, preasure or a chemical reaction. also its a metamorphic rock.
Are intrusive rocks younger than the rocks they cut across?
No, intrusive rocks are typically younger than the rocks they cut across. This is because they are formed when molten rock (magma) solidifies beneath the Earth's surface, usually after the surrounding rocks have already formed.
Why igneous rocks and faults are younger than the rocks they cut across?
They are formed from hardened lava which comes up from the ground and hardens inside the rock, which happens of course after the other rocks have already formed.
What kind of rock does a metamorphic rock start as?
Metamorphic rocks are formed from sedimentary rocks.
What is the term for rock formed from magma or lava?
Intrusive igneous rocks are thusly formed.
What the rock cycle describe?
The rock cycle describes how rocks are formed, and how they change to sedimentary rock, to metamorphic rock, to magma, to igneous rock, to sediment, and back to sedimentary rock.
How is the rock cycle formed?
it is formed by broken down rocks
Can rocks be unformed if formed already and how?
Yes, when plate movements carry rocks deep down under the surface of the Earth, rocks can melt into magma. When the rock melts, it basically "unforms." Then, if that liquid rock comes ever cools down, it reforms into some form of igneous rock.
Write a summary of the the three types of rocks and how they are formed?
igneous rocks are formed by cooling lava from volcanos. Obsidian is an igneous rock. Sedimentary rocks are formed by particles being deposited by water. Sandstone is a sedimentary rock. Metamorphic rocks are formed when heat, pressure, and chemical reactions change existing rocks. Granite is a metamorphic rock.
What rock formed in layers?
sedimentary rock
What kind of rock is formed from rocks sediments?
Sedimentary rock.
