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Aparasitic cone (alsoadventive cone,satellite cone,satellitic cone orlateral cone) is the cone-shaped accumulation of volcanic material not part of the central vent of avolcano. It forms from eruptions from fractures on the flank of the volcano. These fractures occur because the flank of the volcano is unstable. Eventually, the fractures reach themagma chamber and generate eruptions calledflank eruptions, which, in turn, produce a parasitic cone.[1]
A parasitic cone can also be formed from adike orsill cutting up to the surface from the central magma chamber in an area different from the central vent.[2]
A peculiar example of multiple parasitic cones isJeju Island in South Korea. Jeju Island features 368 "oreums" (Korean:오름; "mount"), which lie in a roughly lateral line on either side of the island's central dormantshield volcanoHallasan.
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