I think there are more than two uses of volcanic rock. There are two FORMS of volcanic rock. One is pumice and the other is obsidian. Pumice is often used for landscaping, personal beauty uses (callus removal), etc. The other is obsidian. Obsidian is like glass and ancient people's used it for tools. Knives, arrowheads, and other tools that one would want to have a sharp edge are perfect uses of obsidian. In modern times, obsidian is used for jewelry, art, and even some modern day surgical tools.
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It will be in a volcanic or sediment rock.
Igneous rock.
Not necessarily. It canbe as heavy as ordinary rock, or much ligher. The lightest rock on earth, pumice, is a volcanic rock. It is light enough to float in water.
because it is a volcanic rock
No. Volcanic rock (or igneous rock) is formed when lava cools. A metamorphic rock is formed when a rock changes because of tremendous heat and pressure underneath the earth to become a new type of rock.
Igneous rocks, which are volcanic rock are often Used as building materials for such things as kitchen counter tops and tombstones, or even just material to construct buildings.
plutonic and volcanic
Yes,it is a volcanic rock.
No. Volcanic rock is not flammable.
Volcanic islands are formed by volcanoes and are therefore composed of volcanic rock.
Niether. Volcanic rock is a mixture.
Kimberlite is a volcanic rock. Kenyte is a volcanic rock found on Mount Kenya.
Volcanic rocks are considered igneous.
No. Obsidian is just one of many types of volcanic rock.
is a volcanic eruption part of the rock cycle
Volcanic activity produces extrusive igneous rock.
is a volcanic eruption part of the rock cycle