What type of eruption(s) take(s) place at Mount Vesuvius?

In a "Vesuvian" eruption, as typified by the eruption of Mount Vesuvius in Italy in A.D. 79, great quantities of ash-laden gas are violently discharged to form cauliflower-shaped cloud high above the volcano. This is violent, with generally little magma (bombs, spindles, and cinders are found, but pahoehoe and aa are not, as they require a generally mild eruption.