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Ahat [919]
3 years ago
5

What are Island Arcs ?The andesite originates most likely from the melting of parts of the descending plate and sediments that h

ad accumulated on its surface. What list identifies minerals present in andesite from the greatest percentage by volume to the least percentage by volume?
Geography
1 answer:
Lina20 [59]3 years ago
5 0

Answer:

As explained below.

Explanation:

  • The island arcs are a long chain of active volcanoes and have intense seismic activity and are found along with the rings of fire as the convergent plate boundary and form a chain of active or the extinct volcanoes that form an arc-shaped pattern on he deep-sea trench.
  • Andesite is an extrusive igneous rock of the intermediate composition and is an intermediate between the basalt's and the rhyolite and has 50 to 67% of the Silicon oxide and is dominated by the pyroxene s and the hornblende and feldspar is present in lower amounts.
  • <u>This andesite is characterized by the presence of the subduction zone s and the mental wedge.</u>
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