The Mercato eruption (Pomici di Mercato) of Mount Vesuvius refers to a Plinian-type eruption that occurred around 8,010 ± 40 14C yr BP (8,890 ± 90 cal yr BP) and is estimated to have had a Volcanic explosivity index (VEI) of 5. The eruption was preceded by 7000 years of rest and followed by about 4000 years of rest.
References
Mercato eruption Wikipedia(Text) CC BY-SA