0
These rock formations are generally referred to as igneous rocks and are categorized in at least two forms: Basalts and Granites. Lava is the form of molten rock. But, when it cools in air, it is more of a Basalt. When it cools well beneath the surface, under pressure from above, it takes the form of a Granite. However, we do use, for landscaping purposes, a form of it that has been cooled in water and is very porous (open-celled). This is usually just called "lava rock".
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoigneous rock! if this is a question for a worksheet that's for a grade you are a cheater!
Wiki User
∙ 13y agoIts called metamorphic a rock made from exccessive heat
Wiki User
∙ 14y agoIgneous rock is formed from the cooling of magma or lava.
Wiki User
∙ 13y agofrom molten magma=intrusive igneous rocks
from lava=extrusive igneous rocks
generally igneous rocks are formed from either molten magma or lava
Wiki User
∙ 6y agoanother name for the mineral crystals in cooling magma or lava
Add your answer:
Earn +20 pts
Do large grain rocks form from lava or magma?
they form from both...ithink
When large masses of magma solidify far below earth's surface they form igneous rocks that have what kind of texture?
clastic texture
What is a type of rock formed by pressure on large masses of rock?
Metamorphic rocks are buried deep inside Earth. There is enough heat and pressure to change the rocks, but not enough to melt it into magma. Metamorphic rocks can form adjacent to layers of magma, because of the generated heat, however
What extrusive thing does igneous rocks form?
Magma or Lava
Igneous rocks that form when magma cools on Earths's surface are called what igneous rocks?
Extrusive igneous rocks.
What is a large group of rocks which form magma or lava?
Igneous rocks.
What large group of rocks which form from magma of lava?
another name for the mineral crystals in cooling magma or lava
Do large grain rocks form from lava or magma?
they form from both...ithink
The crystals that form in slowly cooling magma are generally?
large rocks
Rocks that form as a result of cooling magma?
Rocks formed from magma are igneous rocks. Extrusive igneous rocks form from lava at or near the surface. Intrusive rocks form from magma below the surface.
How are instrusive rocks different to extrusive rocks?
Intrusive rocks are igneous rocks that form when magma solidifies below the Earth's surface. They usually form by rather slow cooling, which allows time for large crystals to grow, and these large crystals tend to give them a coarse grain. Extrusive rocks are igneous rocks that form when magma solidifies above the Earth's surface. They usually form by comparatively rapid cooling, which does not allow time for large crystals to form, so they are often fine-grained or amorphous.
Where do intrusives rocks form?
They form underground from the cooling and solidification of magma.
Why do rocks form?
Igneous rocks form because, magma cools under the ground, or magma erupts, then cools on the ground forming these rocks.
How does magma form into ignous rocks?
igneous rocks are formed through the cooling and solidification of magma.
Magma cools and solidifies to form what rocks?
igneous rocks
What are large-grained light-colored rocks that form deep inside earth composed of what type of magma?
Igneous
What type of rock is made from hot magma?
Rocks that form when hot magma solidifies are igneous rocks.
