theory of plate tectonics - ThoughtCo

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The theory of plate tectonics (meaning

As the tectonic plates are in constant motion, one of the changes that could happen is the collusion of the two tectonic plates. If the two tectonic plates collide, the resultant boundary that would be formed here is the convergent boundary. This collision can happen in three distinct ways. One of them could be the collision between two oceanic crusts (Kusky, 2008). This notion occurs in the sea and oceans. Two oceanic crusts under the random movement collide and form some physical feature such as the islands. For example, the islands that make the Philippines country was as results of the collusion of the Western Pacific oceanic crust. As the two oceanic crusts converged there emerged an upward force that pushed part of the oceanic crust upwards so that the islands could be formed (Gregersen, & Basham, 1989). Additionally, there could be a collision of the between the continental crusts’ plates within the continents which will eventually create mountains such as the Himalayas mountains. These movements are spearheaded by the high level of heat coming from the magma that would want to push the whole plates upwards.

Phd Essay: Theory Of Plate Tectonics Essay Top Writers!

The theory of plate tectonics (meaning "plate structure") was developed in the 1960's.

Tectonic lithosphere plates consist of lithospheric mantle overlain by either or both of two types of crustal material: oceanic crust (in older texts called sima from silicon and magnesium) and continental crust (sial from silicon and aluminium). Average oceanic lithosphere is typically 100 km (62 mi) thick; its thickness is a function of its age: as time passes, it conductively cools and subjacent cooling mantle is added to its base. Because it is formed at mid-ocean ridges and spreads outwards, its thickness is therefore a function of its distance from the mid-ocean ridge where it was formed. For a typical distance that oceanic lithosphere must travel before being subducted, the thickness varies from about 6 km (4 mi) thick at mid-ocean ridges to greater than 100 km (62 mi) at subduction zones; for shorter or longer distances, the subduction zone (and therefore also the mean) thickness becomes smaller or larger, respectively. Continental lithosphere is typically ~200 km thick, though this varies considerably between basins, mountain ranges, and stable cratonic interiors of continents. The two types of crust also differ in thickness, with continental crust being considerably thicker than oceanic (35 km vs. 6 km).

Plate tectonics – The Geography Study School

While scientists are sure that the core of Mars is not active, which means no plate tectonics; they cannot be sure that there was never a time when there were.

Plate Tectonics through Time - Treatise on Geophysics …

The unique feature of the islands stands in contrast to what we know about global plate tectonic theory and volcanoes that have formed around the ring of fire in the Pacific Ocean.

Archean magmatism and deformation were not …

The last boundary that is formed is called a transformational edge. In this stance, the tectonic plates move parallel to each other. The movement is deemed to be quite constructive in nature. A closer look at the various prompts of this movement, as the plates move parallel to each other, they tend to form fault lines that would cause volcanic eruptions. These explosions happened in the oceans, and then they would create the islands while if they occur on the continental crust, then they are deemed to form the volcanic mountains (Kusky, 2008).