Explain Plug Dome/volcano/Spine and give its characteristics.

Explain Plug Dome/volcano/Spine and give its characteristics.

Answers

-A column of very viscous lava which sticks above the ground.
-A column of very viscous magma flows out of the ground.
- It cools and hardens rapidly as it rises vertically.
- Pieces of rock break from the plug and accumulate on the sides e.g. Mont Pelee in West Indies, Hyrax and Fischer’s Tower at Hells gate in Naivasha and Devils Tower in U.S.A.

Characteristics

(a) Made of very viscous lava.

(b) It is dome shaped like a mushroom germinating out of the ground.

(c) Has debris on its sides.

(d) Has very steep sides

(e) Cylindrical in shape

(f) Disintegrates fast due to rocks undergoing rapid cooling

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marto answered the question on March 25, 2019 at 06:27

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