* Pyroclastic eruptions: These eruptions are explosive and involve the fragmentation of magma into airborne particles. This happens when gas pressure builds up within the magma chamber, leading to a rapid release of energy.

* Low-viscosity magma: Low-viscosity magma, like basalt, is more fluid and allows gas bubbles to escape more easily. This results in less pressure buildup and more frequent, less explosive eruptions.

* High-viscosity magma: High-viscosity magma, like rhyolite, is thicker and traps gas bubbles. This leads to increased pressure buildup and more violent, explosive eruptions that produce pyroclastic flows and ash clouds.

In summary: While pyroclastic material is produced during volcanic eruptions, it's more associated with low-viscosity magma because it allows for the rapid release of gas and the fragmentation of magma.