in the middle of the plates
Mantle plumes. These are hot upwellings of magma from the Earth's mantle that can cause volcanic activity on the surface, such as hotspot volcanoes like those in Hawaii.
Mantle plumes
Columns of hot rock rising through Earth's mantle are called mantle plumes. These plumes originate near the core-mantle boundary and can cause volcanic activity on the Earth's surface when they reach the crust, creating features like hotspot volcanoes.
Far from plate boundaries, geological phenomena such as hotspots can occur, where plumes of hot mantle material rise to the surface, creating volcanic activity. Additionally, intraplate earthquakes can happen due to the reactivation of ancient faults or stress accumulation in the Earth's crust. These events demonstrate that tectonic processes can influence regions away from the more active plate boundaries.
Tectonic plates that are located above mantle plumes are called hotspots. These hotspots are areas of volcanic activity that can create volcanic islands or seamounts as the tectonic plate moves over the stationary plume.
Plumes of molten rock originating deep within the mantle are known as mantle plumes. These plumes are believed to be responsible for hotspots and volcanic activity at the Earth's surface.
Underground
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Borrowed Plumes - 1916 I was released on: USA: 18 February 1916
In Borrowed Plumes - 1926 was released on: USA: 10 February 1926
Noces de plumes - 1968 is rated/received certificates of: Belgium:KT
yes
no
protection
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Borrowed Plumes - 1916 II was released on: USA: 8 October 1916
In Borrowed Plumes - 1926 is rated/received certificates of: USA:Passed (National Board of Review)