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Instead of opening about island arcs, volcanic arcs, and continental arcs, I would suggest first defining only a continental arc. Since your page is only about continental arcs, defining other arc types is not very important, unless you use it to distinguish between them all. Maybe expand on your definition of a continental arc in the overview, then you can say something along the lines of "continental arcs differ from island, volcanic, and oceanic arcs because....." at the end of the overview, since it is not directly important in your page. You can repeat info from your page to the overview, so I would suggest using some info from the Origin section in the overview.
The pictures under the table describing continental arcs could be a little bigger, they are hard to see.
Some typos and grammatical errors: "Volcanic arcs are made of an arc-shaped chain of volcanoes. The position of which could be continental or mid-ocean. While an island arc must be offshore, it may not necessarily be volcanic (eg. Hellenic arc)."
"Like their names, an oceanic arc is a volcanic arc which is built on oceanic crust while continental arcs are built on continental crust."
"When the hot magma is ponded, extensive fractional crystallization, assimilation, and probably melting of the less refractory lower crustal rocks will take place, which can be described as a process called underplating." < Remove "that is" at the beginning and start the sentence at "When".
"The petrogenesis of continental arcs is generally different from those of oceanic arcs, so more calc-alkaline and alkaline rocks can be found at a continental arc, with fewer tholeiites and low-K rocks"
Awebb6 ( talk) 06:48, 18 November 2014 (UTC)
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