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← GeographyWhich topographic effect results when shield volcanoes overly lithospheric hotspots?
A)Progressive island chain formation✓
B)Increased frequency of caldera collapses
C)Elevated atmospheric methane concentration
D)Accelerated glacial ice accumulation
💡 Explanation
Progressive island chains form due to plate movement over fixed mantle plumes. Continuous volcanism builds above sea level because the overriding plate transports active volcanoes away from the hotspot, therefore new volcanoes form rather than continuously building one massive landmass.
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