TeachingPlateTectonics Teaching key Tectonics Earth"s internal Structure Divergent Boundary
Convergent Boundary Transform Boundary Tectonic attributes Map

Convergent plate limits are places where lithospheric bowl are relocating towards one another. The key collisions that happen in these areas can create earthquakes, volcano activity, and also crustal deformation.

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Teaching bowl Tectonics Earth"s internal Structure
Convergent Boundary Divergent Boundary
Transform Boundary Tectonic attributes Map

Convergent Plate boundary - Oceanic and also Continental Plates


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When continental and also oceanic bowl collide, the diluent and much more dense oceanic key is overridden by the thicker and also less thick continental plate. The oceanic plate is required down into the mantle in a process known as "subduction." as the oceanic plate descends, it is compelled into higher temperature environments. In ~ a depth of around 100 mile (160 km), products in the subducting plate start to method their melt temperatures and a procedure of partial melt begins.


This partial melting produces magma chambers above the subducting oceanic plate. These magma chambers space less thick than the bordering mantle materials and also are buoyant. The buoyant magma chambers start a slow climb through the overlying materials, melting and fracturing their means upwards. The size and also depth of these magma chambers have the right to be figured out by mapping the earthquake activity around them. If a magma room rises to the surface without solidifying, the magma will certainly break v in the type of a volcano eruption.

The Washington-Oregon shore of the United claims is an instance of this type of convergent bowl boundary. Below the Juan de Fuca oceanic bowl is subducting in ~ the westward-moving north American continental plate. The Cascade Mountain range is a heat of volcanoes above the melting oceanic plate. The Andes Mountain variety of western south America is an additional example of a convergent boundary between an oceanic and also continental plate. Below the Nazca key is subducting beneath the southern American plate.

Visit the interaction Plate border Map to explore satellite pictures of convergent boundaries in between oceanic and also continental plates. Two places are marked to display this type of plate border - the Cascade volcanoes follow me the Washington-Oregon shore of north America and the Andes mountain variety on the western margin of south America.

Effects the a convergent boundary in between an oceanic and continental bowl include: a zone that earthquake task that is shallow follow me the continent margin however deepens in ~ the continent; periodically an s trench immediately off shore of the continent; a heat of volcano eruptions a couple of hundred mile inland from the shoreline; damage of oceanic lithosphere.

Convergent Plate boundary - Oceanic


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When a convergent border occurs in between two oceanic plates, one of those plates will subduct beneath the other. Usually the older plate will subduct because of its greater density. The subducting key is heated together it is required deeper right into the mantle, and also at a depth of about 100 miles (150 km) the plate starts to melt. Magma chambers are developed as a an outcome of this melting, and also the magma is reduced in thickness than the surrounding rock material. It starts ascending through melting and fracturing its way through the overlying absent material. Magma chambers the reach the surface break with to kind a volcano eruption cone. In the early stages of this form of boundary, the cones will certainly be deep in ~ the s surface however later grow to be higher than sea level. This produce an island chain. With continued breakthrough the islands flourish larger, merge, and also an elongate landmass is created.


Japan, the Aleutian Islands, and the east Caribbean islands of Martinique, St. Lucia, and also St. Vincent and the Grenadines are examples of islands developed through this form of key boundary. Visit the interactive Plate boundary Map to explore satellite photos of these three areas.

Effects that are found at this form of plate border include: a zone of significantly deeper earthquakes; an oceanic trench; a chain of volcano islands; the devastation of oceanic lithosphere.

Convergent Plate boundary - Continental


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This is a an overwhelming boundary to draw. First it is complex and second, it is poorly understood when contrasted to the other varieties of key boundaries. In this type of convergent boundary, a an effective collision occurs. The two thick continent plates collide, and also both the them have a thickness that is much reduced than the mantle, which avoids subduction (there may be a little amount the subduction, or the more heavier lithosphere below the continental crust can break complimentary from the crust and subduct).

Fragments of crust or continent margin sediments could be captured in the collision zone between the continents, developing a very deformed melange that rock. The extreme compression can additionally cause substantial folding and also faulting of rocks in ~ the two colliding plates. This deformation can expand hundreds the miles into the bowl interior.

The Himalaya Mountain range is the best active example the this form of key boundary. Visit the interactive Plate border Map to check out satellite images of the Himalaya range where the Indian and also Eurasian key are currently in collision. The Appalachian Mountain range is an ancient example that this collision form and is also marked on the map.

Effects found at a convergent boundary between continental bowl include: extreme folding and also faulting; a vast folded hill range; shallow earthquake activity; shortening and thickening the the plates within the collision zone.

Contributor: Hobart KingPublisher, altoalsimce.org


TeachingPlateTectonics Teaching key Tectonics Earth"s inner Structure Divergent Boundary
Convergent Boundary Transform Boundary Tectonic features Map

Teaching bowl Tectonics Earth"s internal Structure
Convergent Boundary Divergent Boundary
Transform Boundary Tectonic functions Map

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