MasteryExams
Geography • Physical GeographyMedium

Which type of volcanic eruption is characterized by gentle, effusive outpourings of low-viscosity basaltic lava, typically forming broad, gently sloping volcanic cones resembling a warrior's shield?

A. Vulcanian eruption
B. Strombolian eruption
C. Hawaiian eruption✓ Correct Answer
D. Plinian eruption

💡 Solution & Explanation

Hawaiian eruptions feature calm effusive outbursts of highly fluid, low-silica basaltic lava that travels significant distances before solidifying, building broad shield volcanoes with gentle slopes. In contrast, Plinian and Vulcanian eruptions involve explosive ejections of viscous, gas-rich magma that generate towering ash columns and pyroclastic flows. Strombolian eruptions occupy an intermediate category characterized by intermittent explosive bursts of glowing lava clots. Mauna Loa and Kilauea in Hawaii serve as classic geological prototypes for studying effusive shield volcano dynamics.

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