"Seeking the Truth about Chronology Today"
The eruption of Mount Vesuvius in 1139 AD has been classified as either a Subplinian or a Strombolian eruption. It occurred on the 1st of June and lasted 8 days. Its ashes covered Salerno, Benevento, Capua, and Naples.
The main textual sources that contain information about the eruption of Mount Vesuvius in 1139 AD are as follows:
1 – Falcone Beneventano (Falco of Benevento) (12th century) in his Chronicon Beneventanum.
2 – The Chronicle of the Monastery of Cava dei Tirreni.
3 – John of Salisbury (1110s-1180)
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References;
1 – Mount Vesuvius: 2000 years of volcanological observations
2 – Vesuvius Before the 1631 Eruption
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