Plate Boundaries February 9th, 2017

Current research indicates that complex convection within the Earth's mantle allows material to rise to the base of the lithosphere beneath each divergent plate boundary.
Divergent boundaries within continents initially produce rifts which eventually become rift valleys. Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges. Divergent boundaries also form volcanic islands which occur when the plates move apart to produce gaps which molten lava rises to fill.
In plate tectonics, a divergent boundary or divergent plate boundary (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.
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.
As a result of pressure, friction, and plate material melting in the mantle, earthquakes and volcanoes are common near convergent boundaries. When two plates move towards one another, they form either a subduction zone or a continental collision.
In plate tectonics, a convergent boundary, also known as a destructive plate boundary (because of subduction), is an actively deforming region where two (or more) tectonic plates or fragments of the lithosphere move toward one another and collide.
Transform faults are the only type of strike-slip fault that can be classified as a plate boundary.
While most transform faults are hidden in the deep oceans where they offset divergent boundaries as series of short zigzags accommodating seafloor spreading, the best-known (and most destructive) are those on land at the margins of tectonic plates.
A transform fault or transform boundary (also known as a conservative plate boundary, since these faults neither create nor destroy lithosphere), is a type of fault whose relative motion is predominantly horizontal, in either a sinistral (left lateral) or dextral (right lateral) direction. Furthermore, transform faults end abruptly and are connected on both ends to other faults, ridges, or subduction zones.[
Created By
Ben Montagne


Created with images by WikiImages - "earth map winter" • edenpictures - "Hancock View North" • kevin dooley - "Converging" • Luiz Henrique Souza - "Divergentes" • pmlbird - "PML Divergent" • tpsdave - "edmonton canada convergence fountain" • ARHiggins - "Convergent Trade" • Dallas Krentzel - "Dromedary Camel (Camelus dromedarius)" • pmlbird - "PML Convergent Boundary" • Karen Roe - "Hardwick Hall (NT) & Hardwick Old Hall (EH) 06-07-2013" • Karen Roe - "Hardwick Hall (NT) & Hardwick Old Hall (EH) 06-07-2013" • docentjoyce - "Balconies Caves Trail - Pinnacles National Park" • pmlbird - "PML Transform Boundary"

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