What type of eruption formed the volcano in this photograph?

Question

Quizplus · Accepted Answer

The steep-sided slope and conical shape of the volcano in the photograph suggest that it was formed by an eruption of viscous lava. Fluid lava flows result in less steep-sided volcanoes with broad slopes, whereas lava fountains and eruption columns are associated with explosive eruptions and do not typically result in such a distinct cone shape. Pyroclastic flows occur when explosive eruptions release ash, rock, and other materials that rush down the sides of a volcano, but there is no evidence of this in the photograph.

What Type of Eruption Formed the Volcano in This Photograph