Viscous lava that accumulates above a vent in a bulbous mass creates a ________________
A) shield volcano.
B) stratovolcano.
C) cinder cone.
D) lava dome.

Question

Quizplus · Accepted Answer

Viscous lava that accumulates above a vent in a bulbous mass typically forms a lava dome. This is because the lava is too thick to flow very far, so it piles up around the vent and forms a dome-shaped mass. Shield volcanoes are formed by fluid, low-viscosity lava, stratovolcanoes are formed from alternating layers of lava and ash, and cinder cones are formed from explosive eruptions of tephra.

Viscous Lava That Accumulates Above a Vent in a Bulbous