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Convergent plate boundaries are locations where lithospheric plates are relocating towards one another. The bowl collisions that occur in these areas can produce earthquakes, volcanic activity, and also crustal deformation.
You are watching: Ocean-continental convergence produces _____.
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Convergent Plate boundary - Oceanic and also Continental Plates
When continental and oceanic key collide, the diluent and an ext dense oceanic plate is overridden by the thicker and less dense continental plate. The oceanic bowl is compelled down into the mantle in a procedure known as \"subduction.\" as the oceanic bowl descends, that is compelled into higher temperature environments. At a depth of around 100 miles (160 km), products in the subducting plate begin to strategy their melt temperatures and also a procedure of partial melting begins.
This partial melting produces magma chambers over the subducting oceanic plate. These magma chambers room less thick than the neighboring mantle materials and are buoyant. The buoyant magma chambers begin a slow ascent through the overlying materials, melting and also fracturing their way upwards. The size and also depth of these magma chambers can be figured out by mapping the earthquake activity around them. If a magma chamber rises to the surface ar without solidifying, the magma will certainly break v in the kind of a volcanic eruption.
The Washington-Oregon shore of the United states is an instance of this type of convergent plate boundary. Below the Juan de Fuca oceanic key is subducting in ~ the westward-moving north American continent plate. The Cascade Mountain variety is a line of volcanoes above the melting oceanic plate. The Andes Mountain selection of western south America is another example of a convergent boundary in between an oceanic and also continental plate. Right here the Nazca key is subducting in ~ the southern American plate.
Visit the interaction Plate boundary Map to explore satellite images of convergent boundaries in between oceanic and also continental plates. Two areas are significant to display this form of plate boundary - the Cascade volcanoes follow me the Washington-Oregon coastline of phibìc America and the Andes mountain range on the west margin of southern America.
Effects the a convergent boundary in between an oceanic and also continental key include: a zone the earthquake task that is shallow follow me the continent margin however deepens in ~ the continent; periodically an s trench automatically off shore of the continent; a line of volcanic eruptions a couple of hundred miles inland from the shoreline; devastation of oceanic lithosphere.
Convergent Plate boundary - Oceanic
When a convergent border occurs between two oceanic plates, one of those plates will subduct in ~ the other. Normally the older plate will subduct because of its greater density. The subducting plate is heated together it is required deeper into the mantle, and at a depth of about 100 mile (150 km) the plate begins to melt. Magma chambers are developed as a result of this melting, and the magma is reduced in thickness than the bordering rock material. It begins ascending through melting and fracturing its way through the overlying rock material. Magma chambers the reach the surface break through to type a volcanic eruption cone. In the early on stages the this type of boundary, the cones will certainly be deep in ~ the ocean surface yet later flourish to be greater than sea level. This produce an island chain. Through continued advancement the islands prosper larger, merge, and an elongate landmass is created.
Japan, the Aleutian Islands, and the eastern Caribbean islands of Martinique, St. Lucia, and St. Vincent and the Grenadines are instances of islands formed through this form of key boundary. Visit the interaction Plate boundary Map to check out satellite pictures of these 3 areas.
Effects the are found at this form of plate boundary include: a ar of increasingly deeper earthquakes; one oceanic trench; a chain of volcanic islands; the devastation of oceanic lithosphere.
Convergent Plate border - Continental
This is a daunting boundary to draw. An initial it is complex and second, that is poorly taken when contrasted to the other species of plate boundaries. In this kind of convergent boundary, a powerful collision occurs. The two thick continental plates collide, and both the them have a density that is much reduced than the mantle, which avoids subduction (there may be a tiny amount of subduction, or the more heavier lithosphere below the continent crust could break totally free from the crust and also subduct).
Fragments of crust or continent margin sediments could be caught in the collision zone between the continents, creating a very deformed melange that rock. The intense compression can likewise cause considerable folding and also faulting of rocks in ~ the 2 colliding plates. This deformation can prolong hundreds the miles right into the key interior.
The Himalaya Mountain range is the best active example that this form of bowl boundary. Visit the interaction Plate boundary Map to check out satellite images of the Himalaya variety where the Indian and also Eurasian key are at this time in collision. The Appalachian Mountain variety is an ancient example that this collision kind and is also marked on the map.
Effects found at a convergent boundary in between continental plates include: intense folding and faulting; a vast folded hill range; shallow earthquake activity; shortening and also thickening that the plates in ~ the collision zone.
Contributor: Hobart KingPublisher, tasiilaq.net
|TeachingPlateTectonics||Teaching plate Tectonics||Earth\"s internal Structure||Divergent Boundary|
|Convergent Boundary||Transform Boundary||Tectonic attributes Map|
|Teaching plate Tectonics||Earth\"s inner Structure|
|Convergent Boundary||Divergent Boundary|
|Transform Boundary||Tectonic attributes Map|
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