It's now time construct a hypothesis for what you think happened at Pompeii, Boscoreale and Herculaneum during the 79 AD eruption of Vesuvius. This hypothesis will utilize what you have learned about explosive eruptions and the observations that you have made of the volcanic deposits in the different cities.

Follow these steps to construct a working hypothesis.

1. Review your field observations and determine the type of volcanic process that formed the various layers in each city.
2. Compare your interpretations of processes at Pompeii, Boscoreale and Herculaneum and see how they might differ. How could an eruption produce different effects at different locations around the volcano?
Timing of the eruption
The eruption of Vesuvius began in the early afternoon of August 24, 79 AD. Formation of volcanic deposits in Boscoreale and Pompeii began shortly thereafter, probably around 1 pm. In contrast, at Herculaneum the first deposits from the eruption were not laid down until about 1 am on the morning of August 25.
3. Construct a complete scenario of the burial of the cities during the 79 AD eruption using the information from the volcanic deposits, the position of the cities relative to the volcano, and the timing of the beginning of volcanic deposition in each area. (See information to the right).
In your field notebook write down your hypothesis for what you think happened at the different cities. Your hypothesis should cite the specific evidence and observations that you collected during your virtual fieldtrip.