Igneous Rocks.
All volcanoes produce igneous rocks.
Extrusive Igneous rocks, eg basalt, pumice, obsidian, tufa etc., are associated with volcanoes.
No. Plutonic rocks are igneous rocks that hardened underground. Rocks that form on volcanoes are volcanic rocks.
Because the lava from volcanoes form igneous rocks
Some rocks came from quarry, ergo not all rocks came from quarrying, rocks may came from different processes like sedimentation, there are also some rocks that came from volcanoes, these kind of rocks are called igneous rocks.
http://en.wikipedia.org/wiki/Volcano volcanoes can be composed of a variety of igneous rocks.
Volcanoes contain a variety of rocks and minerals such as basalt, andesite, rhyolite, obsidian, pumice, and granite. Volcanic rocks are typically rich in silicate minerals like quartz, feldspar, and olivine, with varying amounts of volcanic glass and pyroclastic material. Minerals like sulfur, pyrite, and magnetite can also be found in volcanic environments.
igneous rocks,sedimentary rocks, and metamorphic rocks.
Rocks formed in volcanoes from magma.
Igneous rock is found in volcanoes.
through volcanoes, lava comes out and when it cools it turns into igneous rock.
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