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Dr. Wilson said that there are "hot spots", under the earth's crust in some places. can form a sea mount or island volcano if the hot spot is under the ocean floor, as in the case of How did deep ocean trenches help to explain plate tectonics? The Hawaiian Islands formed as the Pacific Plate moved above the Hawaiian Hot Spot. The amount of lava erupted to form this huge ridge, about 186,000 cubic miles, Do they extend only a few hundred miles beneath the lithosphere? 17 Dec 2014 The melted rock, known as magma, often pushes through cracks in the crust to form volcanoes. Hot spot volcanism is unique because it does not occur at the boundaries of Earth's tectonic plates, where all other volcanism occurs. Instead it occurs at abnormally hot centers known as mantle plumes. Hot spots form when heat from deep within the earth causes mantle rock directly beneath the crust to melt and form a magma plume. Each of these islands is actually a volcano that formed above a hot spot in the Pacific plate. While the Hawaiian islands are well-known examples of hot 26 Aug 2015 When a hot spot forms in the middle of a plate, it remains constant, as the plate continues to move over it. The result is that a trail of volcanoes is left behind, with In geology, the places known as hotspots or hot spots are volcanic regions thought to be fed by The latter form over subduction zones, at converging plate boundaries. are not time-progressive (e.g. the Galapagos) and by the fact that hotspots do not appear to be fixed relative to one another (e.g. Hawaii and Iceland.) 10 Mar 2015 A "hotspot" is an area in the Earth's mantle from which hot plumes rise upward, forming volcanoes on the overlying crust. The mantle plumes that form hotspots are thought to be relatively stationary, while tectonic plates are not. A hot spot can be described as “A small area of the Earth's crust where an She proposed that all plates have “scars” from form collisions or divergence Iceland does not fit well with these 2 theories, as it is on a Divergent plate boundary.
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