An andesite rock. it came out of the volcanic eruption of Mt. St. Helens...
Extrusive igneous rock such as basalt, rhyolite, pumice, and obsidian.
Igneous rocks formed from hardened lava include basalt, andesite, and rhyolite. Basalt is a fine-grained, dark-colored rock commonly found in oceanic crust, while andesite and rhyolite are intermediate to felsic in composition and typically found in volcanic arcs or continental volcanic regions.
ummm volcanic rock? but really its black rock and its all over near the hawaiian volcanoes! :)
When a volcano erupts the molten cools quickly it is also known as volcano glass
Beacon rock is not a volcano, but rather is the basaltic andesite volcanic neck or plug (core) of an ancient volcano, the softer outside of which was eroded by the Missoula Floods.
Underwater volcano
A volcano rock is rock formed from ash or lava erupted from a volcano.
igneus rock
The rock that can be formed on the Eyjafjallajökull volcano is andesite. Andesite is an intermediate volcanic rock that is created from the cooling and solidification of magma within the volcano. It is a common rock type associated with explosive eruptions.
Volcano
Igneous rock... There are extrusive (formed on the exterior of a volcano by lava) and intrusive (formed on the inside of a volcano by magma).
A volcano.
igneous rock is formed when magma cools from a volcano
A volcano.
Extrusive igneous rock such as basalt, rhyolite, pumice, and obsidian.
Igneous rocks formed from hardened lava include basalt, andesite, and rhyolite. Basalt is a fine-grained, dark-colored rock commonly found in oceanic crust, while andesite and rhyolite are intermediate to felsic in composition and typically found in volcanic arcs or continental volcanic regions.
ummm volcanic rock? but really its black rock and its all over near the hawaiian volcanoes! :)