Convergent plate boundaries are also called subduction zones and are typified by the Aleutian Trench, where the Pacific Plate is being subducted under the North American Plate. The best known example is the earthquake-prone San Andreas fault zone of California, which marks the boundary between the Pacific and North American Plates.
The great majority of the world's earthquakes and active volcanoes occur near the boundaries of the Earth's shifting plates. Why then are the Hawaiian volcanoes located near the middle of the Pacific Plate, more than 2, miles from the nearest plate boundary? In , J. Tuzo Wilson, a Canadian geophysicist,.
Shield volcanoes are found on divergent plate boundaries , where two plates move away from one another. Shield volcanoes have the following characteristics:. Ash released from shield volcanoes often builds up around the vent forming a steep, round hill known as a cinder cone. A lava tube may also form, beneath the surface of the ground, when low viscosity lava develops a hard crust through which lava flows.
A caldera is a large-scale volcanic crater that could be several kilometres in diameter. It is a shield volcano and is currently the most active volcano in the Hawaiian islands. Shield volcanoes are known for lava flows that are very fluid. Kilauea is on the Pacific plate.
The Hawaiian islands are not located at a plate boundary. They are roughly in the middle of the Pacific plate. There… See full answer below. New islands — as the Pacific Plate continues its slow march North-Westward.
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