Extrusive igneous rocks and some sedimentary rocks are formed above ground.
Extrusive igneous rock is formed from the crystallization of magma (lava) above ground.
It is formed both- above ground (as extrusive igneous rocks) or below ground (as intrusive igneous rocks).
The general type is extrusive igneous rock.
Extrusive igneous rocks are formed from the solidification of magma above ground.
Geologists classify rocks by where they are formed; above ground or under ground
Igneous rock is formed from solidification of magma either above or below ground.
When rock above a cave collapses, it forms a sinkhole. Sinkholes are depressions in the ground that are often caused by the erosion of underground caves or channels.
it is formed either underground or above ground. it is formed underground when hot magma is trapped and cools slowly, when it has cooled down it has then become igneous rock but on top of the ground the lava cools much quicker then what it does below the ground
Gabbro is an intrusive rock, which means it formed underground. Basalt is an extrusive rock, which means it formed above ground .
No. Igneous rock is simply the solid substance left when magma or lava hardens, above ground or below ground.
Usually, the determining factor is the size of the mineral crystals in the rock. Igneous rocks that have solidified above ground cool quickly and have less time for larger crystals to grow.
Plutonic rock is formed from magma in the Earth's crust. Volcanic rocks form from lava above ground.