what is the source of the magma that fuels the island arc complex?
a. continental crust
b. the subducted plate
c. the overrriding plate
d. the volcanoes that make up the complex
I'm pretty sure that its B
(wont let me post link but search island arcs on google then go to the wikipedia page)
what is the source of the magma that fuels the island arc complex?
The source of the magma that fuels the island arc complex is option b, the subducted plate. When an oceanic plate subducts or sinks beneath a continental or another oceanic plate at a convergent plate boundary, the subducted plate melts due to the high temperatures and pressures in the Earth's mantle. This melting generates magma, which rises to the surface, forming a volcanic arc or island arc complex. Therefore, option b, the subducted plate, is the correct answer.
The source of the magma that fuels the island arc complex is option b, the subducted plate.
To understand why, let's break down the process: an island arc complex is typically formed in a subduction zone, where there is a convergence of tectonic plates. In this type of tectonic setting, one of the plates is forced beneath the other, forming a subduction zone.
As the subducting plate sinks deeper into the Earth's mantle, it is subjected to high pressures and temperatures. The heat melts the rocks in the subducting plate, and magma is generated. This magma is less dense than the surrounding rocks, so it rises towards the surface.
As the magma reaches shallower depths, it can accumulate and form a magma chamber beneath the overriding plate. From this magma chamber, the magma can then move upward and eventually erupt, forming volcanoes that make up the island arc complex.
Therefore, the source of the magma that fuels the island arc complex is the subducted plate, option b.