They are similar in composition
they are igneous rocks
Both are composed of volcanic glass.
granite is extrusive rock
Granite
Intrusive:GraniteDioriteGabbroExtrusive:ObsidianBasaltRhyolite
== == Rhyolite, basalt, pumice, obsidian, andesite, dacite, tuff, welded tuff, scoria.
These are all formed by volcanic activity. Igneous
Examples of igneous rocks are pumice, obsidian, basalt, and rhyolite.
Basalt and pumice.
Peridotite, andesite, pumice, rhyolite, obsidian, granite, and basalt.
basalt, granite, rhyolite, andesite, gabbro, obsidian, scoria, pumice.
Basalt and rhyolite are examples of extrusive igneous rocks. Also, pumice, scoria, obsidian, tuff, ignimbrite,....
Granite basalt pumice aplite scoria
Rocks formed from solidified molten rock are classified as igneous rock. Examples would be basalt, granite, gabbro, pumice, obsidian, and rhyolite.
granite is extrusive rock
Granite
They are all Igneous rocks.
Igneous rocks
The most common types of igneous rocks are andesite, basalt, diorite, gabbro, granite, pegmatite, peridotite, porphyry, pumice, rhyolite, syenite, and trap.Igenous rocks are rocks that melt and become molten lava, then harden.