Question

Studies have shown that there is a relationship between the type and location of boundaries and the distribution and depth of earthquakes along or near these boundaries. Many earthquakes, shown in the map as wide bands, occur along convergent areas. These areas experience varying depths of earthquakes. Where would oceanic-oceanic convergence most likely occur?
A.Nazca plate converging with the South America plate, forming the Andes mountains
B.Philippine plate converging with the Pacific plate, forming Mariana Islands in the Pacific Ocean
C.Juan de Fuca converging with the North American plate, forming the Cascade mountains
D.North America Plate converging with the Eurasian Plate, forming a mid-ocean ridge

Answer 1

Answer:B

Explanation:

Answer 2

Answer:

The correct answer is B. Philippine plate converging with the Pacific plate, forming Mariana Islands in the Pacific Ocean

Explanation:

When two oceanic plates collide, it occurs oceanic convergence. The thicker and older plate subduces under the other plate, and at this point, it starts the volcanic activity. As the thicker plate descends, it is heated and melted and its materials are incorporated into the mantle. The fast subduction originates magma that ascends to the surface by crevices. This makes place to the formation of grouped volcanic islands, the island arches. Subduction zones coincide with deep-sea trenches or depressions in the ocean bed. The volcanic islands are arranged in a circumference arch shape, which is bordered by a fossa. Most of these are located in the western Pacific, where the pacific crust is older and thicker, and hence it submerges easier in the mantle.

The Mariana Islands in the Pacific Ocean are examples of these volcanic islands.