According to the mantle plume model for the origin of hot spots mantle plumes pr
ID: 153873 • Letter: A
Question
According to the mantle plume model for the origin of hot spots
mantle plumes produce the chains of volcanoes called volcanic arcs.
hot spots only occur beneath oceanic plates.
mantle plumes produce volcanoes that do not always coincide with a plate boundary.
hot spots occur along subducting plate boundaries.
a.mantle plumes produce the chains of volcanoes called volcanic arcs.
b.hot spots only occur beneath oceanic plates.
c.mantle plumes produce volcanoes that do not always coincide with a plate boundary.
d.hot spots occur along subducting plate boundaries.
Explanation / Answer
C- mantle plumes produce volcanoes that do not always coincide with a plate boundary.
Explanation- Mantle plumes comes from the D'' layer i.e. 2700-2900km depth and mantle plumes are driven by the mantle convection cell. Plate tectonics are driven by the asthenospheric convection cells. Mantle plumes generlly forms the intraplate volcanism. Form of mantle plume above the surface is called as hotspot. Plumes generally forms the contnental flood basalt. These are associated with less magnitude earthquakes. Mantle plume is stationary where as the plate over it moves, thats why it produces chain of islands. Ex- Hawaiian island
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