Would Granite Form At Plate Collision Zone

A convergent plate boundary is a location where two tectonic plates are moving toward each other often causing one plate to slide below the other in a process known as subduction.

Would granite form at plate collision zone.

Bonin and mariana islands. These volcanic islands form island arcs where the pacific plate is subducted beneath the floor of the philippine sea to the west. Continental collision is only known to occur on earth. Subduction of oceanic lithosphere has invariably led to closure of ocean basins collisions between island arcs and continental blocks and the formation of granite magmatism along the resulting sutures pitcher 1983.

A belt of granite lies inland and forms a mountainous zone from the axis of. Oceanic crust tends to subduct under continental crust owing to its relative density. The land between the plates is forced upwards to form fold mountains eg the alps and himalayas. This largely basaltic oceanic crust contain a relatively high percentage of water and once the plate subducts into the mantle the water is driven off lowering the melting.

But most of its penetration has been absorbed by crustal shortening north of the collision zone. In simple terms the opposition between arc and post collisional zones also overlaps with the age old debate on the origin of granitic rocks by i partial melting of older crust or ii. Continental collision is a variation on the fundamental process of subduction whereby the subduction zone is destroyed mountains produced and two continents sutured together. The alps form part of a cenozoic orogenic belt of mountain chains called the alpide belt that stretches through southern europe and asia from the atlantic all the way to the himalayas this belt of mountain chains was formed during the alpine orogeny a gap in these mountain chains in central europe separates the alps from the carpathians to the east.

In this section we compare the main features of granitic magmatism in both major granite forming systems on earth. Where an area of sea separates two plates sediments settle on the sea floor in depressions called geosynclines. Magmatic arcs and post collision zones. Continental collision is a phenomenon of the plate tectonics of earth that occurs at convergent boundaries.

Collision zones at collision zones fold mountains will be formed. Pearce et al 1984. Harris et al 1986 this collisional tectonic setting is distinct from the preceding one of oceanic plate subduction and commonly involves. Continental collision is a phenomenon of the plate tectonics of earth that occurs at convergent boundaries continental collision is a variation on the fundamental process of subduction whereby the subduction zone is destroyed mountains produced and two continents sutured together.

Well really the mechanism that creates granitic magma is subduction of oceanic plates which occurs at convergent boundaries.