G-arheologimanus it's digging a hole in a place used many years. Close to the surface he finds an byzantine thing, 1 meter below a trojan sword and half meter below an idol. Diferent depth different periods (often)
Usually the team must be carefull with everything they find, but often the "uninteresting" periods are destroyed beeing on top on what the arheolog cares for. So, many late roman and byzantine things were destroyed by people who cared only about classical Greece.
Another example it's the destruction of the medieval buidings that surrounded the Coloseum by Musolini to make it more vizible.
G-arheologimanus it's making a dig and founds an chrsitian church made by Justinian and below a temple to Athens. He destroys the church or does not look at the temple?
Gotcha. Thanks, Kosmo.