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Volcanoes on oceanic rocks are typically associated with divergent plate boundaries and hotspots, resulting in primarily basaltic lava that produces shield volcanoes and low-viscosity eruptions. In contrast, continental volcanoes often occur at convergent plate boundaries and can produce a wider variety of rock types, including andesite and rhyolite, leading to more explosive eruptions and stratovolcanoes. The geological setting and composition of the magma influence the eruption style and the landscape formed by these volcanoes.
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What are types of rocks formed by volcanoes?
Three different types of volcanoes are 1) Shield volcanoes; they are large mountains with gentle slopes. 2) Cinder cones volcanoes; they are small volcanoes made of hardened lava chunks called cinders. And the last one is 3) composite volcanoes; they are medium sized mountains made up of layers of lava that alternates with cinders. That is it.
What are basaltic ingnous rocks?
Basaltic igneous rocks are dark-colored, fine-grained rocks that form from the rapid cooling of lava at or near the Earth's surface. They are rich in iron, magnesium, and calcium, and are commonly found in oceanic crust and volcanic islands. Basaltic rocks are often associated with shield volcanoes and flood basalts.
How much older are the oceanic rocks than the continental rocks?
Oceanic rocks are generally younger than continental rocks, with oceanic crust averaging about 200 million years old and continental crust averaging about 2.5 billion years old. This is due to the process of seafloor spreading at mid-ocean ridges, where new oceanic crust is constantly being formed and pushing older crust away.
Are all rocks formed by volcanoes?
no not all rocks are formed by volcanoes because what about sedimentary rocks which are the rocks formed over a long period of time by little pieces of sand and rock etc. by wind and water
What type of rock does volcanoes produce is it igneous metamorphic or sedimentary?
Volcanoes primarily produce igneous rocks, which are formed from the cooling and solidification of magma or lava. These rocks can be further classified into different types such as basalt, andesite, and rhyolite, depending on their composition and texture. Metamorphic and sedimentary rocks can also be found near volcanoes due to processes like heat and pressure from volcanic activity.
Where can igneous rocks be commonly found?
Igneous rocks can commonly be found near volcanoes. They are made when lava is cooled and becomes a solid. The oceanic plates are mostly made of igneous rock.
Where can Igenous rocks be found?
Anywhere you find volcanic activities but usally is on plate boundaries where you find subduction of one plate into another. Usually Continent-Oceanic convergence. the oceanic sink below the continent because the continental plates are less denser than the oceanic plate. you can also find igneous rocks on oceanic-oceanic plates where the form island arc.
What type of rocks are formed in volcanoes?
Volcanoes can produce different types of rocks, including igneous rocks like basalt, andesite, and rhyolite. These rocks are formed from magma that cools and solidifies either within the volcano (intrusive) or on the surface (extrusive) through processes like volcanic eruptions.
Are plutonic rocks igneous rocks that hardened on top of volcanoes?
No. Plutonic rocks are igneous rocks that hardened underground. Rocks that form on volcanoes are volcanic rocks.
Are continental rocks or oceanic rocks older?
Continental Rocks are older
How are volcanoes important in the formation of rocks?
Because the lava from volcanoes form igneous rocks
What are the steps in arc-continent mountain formation?
Continents and mountains are sometimes formed by volcanoes that occur on an arc near a subduction zone. The activity of the volcanoes can cause shifts in the plates that form mountains and lift continents.
What kind of rocks are in volcanoes?
Igneous Rocks.
What are types of rocks formed by volcanoes?
Three different types of volcanoes are 1) Shield volcanoes; they are large mountains with gentle slopes. 2) Cinder cones volcanoes; they are small volcanoes made of hardened lava chunks called cinders. And the last one is 3) composite volcanoes; they are medium sized mountains made up of layers of lava that alternates with cinders. That is it.
Volcanoes are composed of what rocks?
http://en.wikipedia.org/wiki/Volcano volcanoes can be composed of a variety of igneous rocks.
What are basaltic ingnous rocks?
Basaltic igneous rocks are dark-colored, fine-grained rocks that form from the rapid cooling of lava at or near the Earth's surface. They are rich in iron, magnesium, and calcium, and are commonly found in oceanic crust and volcanic islands. Basaltic rocks are often associated with shield volcanoes and flood basalts.
What types of rocks are found in volcanoes?
igneous rocks,sedimentary rocks, and metamorphic rocks.
