To do with fire.
Volcanic rock is igneous, not sedimentary or metamorphic. It forms when magma cools and solidifies on or near the Earth's surface. Sedimentary rocks form through the accumulation and cementation of sediments, while metamorphic rocks form from the alteration of existing rocks due to heat and pressure.
Intrusive igneous rocks by definition, are formed and set underground. As well as the well-crystallized Granites and Basalts, they also include rapidly-chilled rocks such as dykes and sills.Extrusive igneous rocks have been deposited on the Earth's surface, and include all the usual volcanics.
GranitesDioritesGabbrosPegmatitesDykesSillsLayered Igneous intrusions
An intrusive igneous rock.
Obsidian is an igneous rock.So the answer is YES.
Yes.By definition, igneous rock forms from molten rock.
They are both formed from the solidification of magma, the definition of igneous rock.
Rocks formed in volcanoes from magma.
Yes. By definition a rock is solid.
Igneous rock is a type of rock that forms from the cooling and solidification of magma or lava. It is classified based on its texture (coarse or fine-grained) and composition (silica content and mineralogy). Examples include granite, basalt, and obsidian.
a rock that cAN CHANGE TO IGNEOUS, METAMORPHIC, AND SEDIMENTARY
Rhyolite is an igneous, black volcanic rock.
Igneous rock. the definition of igneous: Formed by solidification from a molten state.
Because that is the very definition of igneous rock.
Igneous rocks are formed by the solidification of molten materials.
The common usage of "lava rock" in the USA refers to a black rock with a number of visible bubbles or air pockets that is formed from cooled lava on the surface. Although lava rock is an igneous rock, it is not the same as the definition for the word igneous, which can also include igneous rocks which have solidified from magma below the surface.
Acidic mean designating or of igneous rocks with more than 66% silica.