Related words. 1  poke noun. 2  poke around phrasal verb. 3  poke fun (at) phrase.  a pig in a poke 1  phrase. poke a hole in something phrase.  poke/shove/stick your nose into something 1  phrase. poke about phrasal verb at poke around.  poke fun at phrase at make fun of.
Because the subduction zone (which is also the plate boundary) is generally an arc-shape, geologists named those volcanoes volcanic arcs. A volcanic arc built on continental crust is called a continental arc; when built on oceanic crust the volcanoes form an island arc. Volcanic arcs are made of an arc-shaped chain of volcanoes. 2  The position of which could be continental or mid-ocean. 3  While an island arc must be offshore and does not necessarily be volcanic (e.g. Hellenic arc).
Composite volcanoes most often are found near subduction zones.  They can be found at either oceanic-oceanic convergent plate  boundaries, oceanic-continental plate boundari â¦ es, or  continental-continental plate boundaries. They are especially  prevalent in the Pacific Ring of Fire.omposite volcanoes are usually found at subduction zones, but can occasionally be found in spreading zones such as the East African Rift.