What type of lava is erupted at convergent plate boundaries?
Composite volcanoes
Composite volcanoes, also known as stratovolcanoes, are found on convergent plate boundaries , where the oceanic crust subducts beneath the continental crust.
What type of volcano would you find at an oceanic oceanic convergent boundary?
The Cascades are a chain of volcanoes at a convergent boundary where an oceanic plate is subducting beneath a continental plate.
What type of lava is most common at continental oceanic convergent plate boundaries?
Composite volcanoes are some of the most dangerous volcanoes on the planet. They tend to occur along oceanic-to-oceanic or oceanic-to-continental boundaries because of subduction zones. They tend to be made of felsic to intermediate rock and the viscosity of the lava means that eruptions tend to be explosive.
Why are convergent boundaries dangerous?
Often, seawater and minerals get caught up in the subduction zone, which can cause a build up of pressure and leads to the explosive, dangerous earthquakes and volcanic eruptions you get at a convergent plate boundary. A convergent boundary can cause the formation of massive mountains.
What type of rocks and minerals are found at convergent plate boundaries?
Igneous rocks associated with convergent plate boundaries have the greatest diversity. In this case, granite batholiths underlie the great composite volcanoes and consist of rocks ranging from basalt through andesite to dacite and rhyolite.
Where is an example of an oceanic oceanic convergent boundary?
Examples of ocean-ocean convergent zones are subduction of the Pacific Plate south of Alaska (creating the Aleutian Islands) and under the Philippine Plate, where it creates the Marianas Trench, the deepest part of the ocean.
How is lava produced at a continent-oceanic convergent boundary?
Is lava produced at a continent-oceanic convergent boundary, if so how? | Socratic Yes, through a process called subduction When oceanic crust converges with a continental crust, the oceanic plate will fall underneath the continental plate, like so: This process is called subduction. Areas around subduction are called subduction zones.
What happens to magma when tectonic plates converge?
Ancient magma chamber rocks can be exposed if subduction stops and the volcanoes erode away. Where tectonic plates converge, the one with dense, thin oceanic crust subducts beneath the one with thick, more buoyant continental crust. An accretionary wedge forms between the converging plates as material is scraped off the subducting plate.
What happens when oceanic crust and continental crust converge?
When oceanic crust converges with a continental crust, the oceanic plate will fall underneath the continental plate, like so: This process is called subduction. Areas around subduction are called subduction zones.
Where does volcanism occur near the continental margin?
In areas where oceanic lithosphere is subducted beneath continental lithosphere volcanism occurs as chains of volcanoes near the continental margin, referred to as a continental margin arc.