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Geography

Which process limits the height of stratovolcanoes formed at subduction zones?

A)Erosion rate equilibrium with uplift
B)Magma viscosity increasing with height
C)Lithospheric flexure from loading
D)Atmospheric pressure inhibiting eruption

💡 Explanation

When volcano mass increases significantly, isostatic depression occurs because the lithosphere flexes under the load, reducing magma supply at higher altitudes, ultimately limiting further growth. Therefore lithospheric flexure limits height, rather than erosion alone, magma viscosity, or atmospheric pressure, which play different, lesser roles here.

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