pegmatites
pegmatites
Extrusive igneous rocks.
Igneous rocks
They are called felsic igneous rocks.
They are called extrusive igneous rocks.
pegmatites
Igneous rocks
Extrusive igneous rocks.
yes, the orange rocks on mars are called igneous rocks!
Igneous rocks are formed by the solidification of molten materials.
Extrusive igneous rocks.
Those would be igneous rocks. Extrusive igneous rocks.
Extrusive (volcanic) igneous rocks.
Igneous rocks
Some do. These are called extrusive igneous rocks. However a large portion of igneous rocks form beneath the surface. These are intrusive igneous rocks.
Intrusive igneous rocks are thusly formed.
Igneous rocks generally have extremely low porosity. An exception is pumice, which has abundant vesicles and therefore is very porous (though not permeable).