Answer
An eruption column is typically associated with explosive volcanic eruptions. Explosive eruptions are commonly caused by the eruption of viscous and gas-rich magma known as rhyolitic or dacitic magma. These magmas have high silica content and high viscosity, which means they are thick and sticky and have difficulty flowing. The high viscosity traps gas bubbles within the magma, leading to the build-up of pressure. When the pressure becomes too great, it results in a violent eruption, ejecting a mixture of fragmented magma, gases, and ash into the atmosphere. This material forms a towering eruption column that can rise several kilometers into the sky. So, the type of magma that must erupt to produce an eruption column is typically rhyolitic or dacitic magma.
Work Step by Step
An eruption column is typically associated with explosive volcanic eruptions. Explosive eruptions are commonly caused by the eruption of viscous and gas-rich magma known as rhyolitic or dacitic magma. These magmas have high silica content and high viscosity, which means they are thick and sticky and have difficulty flowing. The high viscosity traps gas bubbles within the magma, leading to the build-up of pressure. When the pressure becomes too great, it results in a violent eruption, ejecting a mixture of fragmented magma, gases, and ash into the atmosphere. This material forms a towering eruption column that can rise several kilometers into the sky. So, the type of magma that must erupt to produce an eruption column is typically rhyolitic or dacitic magma.
