GEOLOGY

EARTH SCIENCE

TECTONICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The Hawaiian islands formed from magma in the mantle called a ____
A
subduction zone
B
hot spot
C
caldera
D
mid-ocean ridge
Explanation: 

Detailed explanation-1: -This upwelling of molten rock, known as a “hot spot, ” creates volcanoes that spew out lava (magma that reaches Earth’s surface). The lava then cools and hardens to create new land. The Hawaiian Islands were literally created from lots of volcanoes-they’re a trail of volcanic eruptions.

Detailed explanation-2: -In areas where the plates come together, sometimes volcanoes will form. Volcanoes can also form in the middle of a plate, where magma rises upward until it erupts on the seafloor, at what is called a “hot spot.” The Hawaiian Islands were formed by such a hot spot occurring in the middle of the Pacific Plate.

Detailed explanation-3: -One of the best known and intensively studied hotspots in the world, the Hawaii plume is responsible for the creation of the Hawaiian–Emperor seamount chain, a 6, 200-kilometer (3, 900 mi) mostly undersea volcanic mountain range.

Detailed explanation-4: -The big island of Hawaii sits atop a large mantle plume that marks the active hotspot. The Kilauea volcano is the main vent for this hotspot and has been actively erupting since 1983. This enormous volcanic island chain, much of which is underwater, stretches across the Pacific for almost 6, 000 km.

Detailed explanation-5: -Abstract. Silica-saturated basaltic magma is the source of the voluminous lava flows, erupted frequently and rapidly in the primitive shield-building stage of activity, that form the bulk of each Hawaiian volcano.

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