IM5- Eruption and emplacement mechanisms of pyroclastic sediments:
examples from the Vulsini volcanoes

Leaders

Danilo M. Palladino, Sapienza University of Rome, Italy
Gianluca Sottili, Sapienza University of Rome, Italy

Contact person: danilo.palladino@uniroma1.it, gianluca.sottili@uniroma1.it

Type: Intra-Meeting
Duration: 1 day
Cost: € 60
Start: Rome (12th September 2019 – early morning)
End: Rome (12th September 2019 – late evening)
Difficulty level: Low
Participants: min 30 max 60

IM5 - Eruption and emplacement mechanisms of pyroclastic sediments | Intra-meeting Trips | IAS 2019 Rome
Lake Bolsena and Latera Caldera, in the Vulsini Volcanic District

The Vulsini Volcanic District is the northernmost manifestation of the Quaternary, peri-Tyrrhenian, potassic magmatism of the Roman Province (Central Italy). It is well known for the variety of relatively young volcanic landforms and the excellent exposures of eruption products that encompass a full spectrum of eruptive styles, both effusive and explosive. The fieldtrip aims at illustrating key field observations (i.e., grain size, componentry, textures) on pyroclastic deposits to reconstruct mechanisms of eruption, transport and deposition of pyroclastic sediments from fallout and flow processes. Particular emphasis will be given to the dynamics of Plinian and caldera-forming explosive eruptions, including data collection for the quantitative evaluation of the eruption parameters magnitude (volume) and intensity (mass eruption rate, column height), relevant for volcanic hazard assessment.

Itinerary

Roma-Montefiascone-Bolsena-Lake Bolsena shores-Piansano-Roma

Technical Information

The fieldtrip is planned as bus transportation, with short walks for reaching outcrops: roadcuts in countryside or town locations around Lake Bolsena. Fairly good weather conditions can be expected, with mild temperatures (usually maxima of 25-30°C), although afternoon rain showers might occur sometimes.