There are many kinds of volcanic rock.
http://en.wikipedia.org/wiki/Volcanic_rock
No, Pennsylvania does not have active volcanoes. The state is not located on a tectonic plate boundary, which is typically where volcanic activity occurs. However, there are some ancient volcanic rock formations in Pennsylvania, but they are not associated with any current volcanic activity.
Explosive volcanoes can produce pumice and tuff.
Basalt is a volcanic rock that can be found on Earth, the Moon, Venus, and Mars. It is formed from the rapid cooling of lava and is a common type of rock in volcanic regions across the solar system.
Non-examples of volcanoes include geological formations such as mountains that are formed through tectonic uplift, sedimentary rock formations, and erosion processes. Additionally, features like craters created by meteor impacts or sinkholes are not volcanic in nature. Rivers and lakes also do not qualify as volcanoes, as they lack the magma and eruptive processes characteristic of volcanic activity.
Volcanic necks are solidified magma that fills the vent of an extinct volcano. Dikes are vertical or near-vertical rock formations that form when magma is injected into fractures and solidifies underground. Sills are horizontal rock formations created when magma is injected between layers of existing rock.
Volcanic islands are formed by volcanoes and are therefore composed of volcanic rock.
Yes. Pumice is a volcanic rock.
Granite is an igneous rock. It is not considered a volcanic rock, but a plutonic rock.
volcanic rock
Certain species of elephants have been known to climb to volcanoes and consume lumps of volcanic rock. This volcanic rock is rich in sodium, important for the elephants diet.
not all are made of volcanic rock but those that are close to active volcanoes will most prob be built of volcanic rock :-)
Rocks are made from dirt and minerals hardening after time from heat and pressure. Sedimentary rock is made from sand and sea animals. Volcanic rock is made from the lava from volcanoes. Metamorphic rock is sedimentary and volcanic rock that has been changed due to heat and pressure after the original rock was created.
by undersea volcanoes by dried up volcanic rock
No, volcanoes are mountains or openings in the Earth's crust through which molten rock, ash, and gases are ejected during eruptions. Volcanic rock, on the other hand, is solidified magma that has cooled and hardened after being ejected from a volcano.
AAA is nothing in relation to volcanoes. A'a is a variety of volcanic rock, formed from a basaltic lava flow with a jagged surface.
Virgina did have volcanoes in the ancient times. Scientists have found traces of volcanic rock in the ground.
No, Pennsylvania does not have active volcanoes. The state is not located on a tectonic plate boundary, which is typically where volcanic activity occurs. However, there are some ancient volcanic rock formations in Pennsylvania, but they are not associated with any current volcanic activity.