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Discussion :: Lithosphere

  1. Shield volcanoes refer to ________

  2. A.

     Explosive lava eruptions

    B.

     Repeated lava flows

    C.

     Ejection of a wide range of pyroclastic materials

    D.

     Individual lava flows

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    Answer : Option B

    Explanation :

    Shield volcanoes are formed by lava flows of low viscosity - lava that flows easily. Consequently, a volcanic mountain having a broad profile is built up over time by flow after flow of relatively fluid basaltic lava issuing from vents or fissures on the surface of the volcano.


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