|
In plate tectonics, a convergent boundary – also known as a convergent plate boundary or a destructive plate boundary – is an actively deforming region where two (or more) tectonic plates or fragments of lithosphere move toward one another. The tectonic plates of the world were mapped in the second half of the 20th century. ...
The tectonic plates of the world were mapped in the second half of the 20th century. ...
The tectonic plates of the Lithosphere on Earth. ...
When two plates move toward one another, they form either a subduction zone or a continental collision. This depends on the nature of the plates involved. In a subduction zone, the subducting plate, which is normally a plate with oceanic crust, moves beneath the other plate, which can be made of either oceanic or continental crust. During collisions between two continental plates, large mountain ranges, such as the Himalayas are formed. Categories: Geology stubs | Plate tectonics ...
Continental collision is a phenomenon of the plate tectonics of our solid Earth. ...
For the movie Himalaya, see Himalaya (film). ...
| |
Continental / Continental | | Image File history File links Oceanic-continental_convergence_Fig21oceancont. ...
Image File history File links Oceanic-continental_convergence_Fig21oceancont. ...
Plate tectonics: convergence of two continental plates. ...
Plate tectonics: convergence of two continental plates. ...
Image File history File links Oceanic-oceanic_convergence_Fig21oceanocean. ...
Image File history File links Oceanic-oceanic_convergence_Fig21oceanocean. ...
Convergent margins
A subduction zone is formed at a convergent plate boundary when one or both of the tectonic plates is composed of oceanic crust. The denser plate, made of oceanic crust, is subducted underneath the less dense plate, which can be either continental or oceanic crust. When both of the plates are made of oceanic crust, convergence is associated with island arcs such as the Solomon Islands. Categories: Geology stubs | Plate tectonics ...
Age of oceanic crust Oceanic crust is the part of Earths lithosphere that surfaces in the ocean basins. ...
Age of oceanic crust Oceanic crust is the part of Earths lithosphere that surfaces in the ocean basins. ...
An island arc is a type of archipelago formed by plate tectonics as one oceanic tectonic plate subducts under another and produces magma. ...
Plate tectonic schematic of the New Zealand transform boundary showing the complex strike-slip and subduction interplay, USGS. An oceanic trench is formed where the denser plate is subducted underneath the other plate. There is water in the rocks that are on the oceanic plate (because they are underwater) and as this plate moves further down into the subduction zone, the higher temperature causes the water to boil, melting the plate which turns into magma.In this process the magma eventully rises, which normally results in volcanoes. This normally happens at a certain depth, about 70 to 80 miles below the earth's surface, and so volcanoes are formed fairly close to, but not right next to the trench. Image File history File links NZ_transform. ...
Image File history File links NZ_transform. ...
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. ...
Some convergent margins have zones of active seafloor spreading behind the island arc, known as back-arc basins. Back-arc basins (or retro-arc basins) are geologic features, submarine basins associated with island arcs and subduction zones. ...
When one plate is composed of oceanic lithosphere and the other is composed of continental lithosphere, the oceanic plate is subducted, often forming an orogenic belt and associated mountain range. This type of convergent boundary is similar to the Andes or the Cascade Ranges in North America. // Orogeny (Greek for mountain generating) is the process of mountain building, and may be studied as a tectonic structural event, as a geographical event and a chronological event, in that orogenic events cause distinctive structural phenomena and related tectonic activity, affect certain regions of rocks and crust and happen within...
This article is about the mountain system in South America. ...
“Cascades†redirects here. ...
When two plates containing continental crust collide, both are too light to subduct. In this case, a continent-continent collision occurs, creating especially large mountain ranges. The most spectacular example of this is the Himalayas. For the movie Himalaya, see Himalaya (film). ...
When the subducting plate approaches the trench obliquely, the convergent plate boundary includes a major component of strike-slip faulting. The best example of this is the Sumatra convergent margin, where convergent action is occurring intermixed with a strike-slip boundary. Old fault exposed by roadcut near Harrisburg, Pennsylvania. ...
For other uses, see Sumatra (disambiguation). ...
Examples The Eurasian plate, shown in green The Eurasian Plate is a tectonic plate covering Eurasia (a landmass consisting of the traditional continents of Europe and Asia) except that it does not cover the Indian subcontinent, the Arabian subcontinent, and the area east of the Verkhoyansk Range in East Siberia. ...
The Indian plate, shown in red Due to continental drift, the India Plate split from Madagascar and collided with the Eurasian Plate resulting in the formation of the Himalayas. ...
For the movie Himalaya, see Himalaya (film). ...
The Pacific plate, shown in pale yellow The Pacific Plate is an oceanic tectonic plate beneath the Pacific Ocean. ...
The North American plate, shown in brown The North American Plate is a tectonic plate covering most of North America, extending eastward to the Mid-Atlantic Ridge and westward to the Cherskiy Range in East Siberia. ...
Aleutians seen from space The Aleutian Islands (possibly from Chukchi aliat, island) are a chain of more than 300 small volcanic islands forming an island arc in the Northern Pacific Ocean, occupying an area of 6,821 sq mi (17,666 km²) and extending about 1,200 mi (1,900...
The Nacza plate, shown in light blue The Nazca Plate, named after the Nazca region of southern Peru, is an oceanic tectonic plate in the eastern Pacific Ocean basin off the west coast of South America. ...
The South American plate, shown in purple The South American Plate is a tectonic plate covering the continent of South America and extending eastward to the Mid-Atlantic Ridge. ...
See also architecture with non-sequential dynamic execution scheduling (ANDES). ...
The Pacific plate, shown in pale yellow The Pacific Plate is an oceanic tectonic plate beneath the Pacific Ocean. ...
Categories: Plate tectonics | Geology stubs ...
Other types of plate boundaries In plate tectonics, a divergent boundary (divergent fault boundary or divergent plate boundary), (but also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other. ...
In plate tectonics, a transform boundary (also known as transform fault boundary, transform plate boundary, transform plate margin, slip boundary or conservative plate boundary) is said to occur when tectonic plates slide and grind against each other along a transform fault. ...
External links - USGS New Zealand seismicity
See also |
Feeds |
Contact