Archaeology Finds are temporary Spawned objects that are 'discovered' (spawned) through the use of the ability of archaeology. Each type of archaeology find can be encountered in any zone that has a dig site of the appropriate type.
The contents of an Archaeology Find depend on one's level of archaeology skill. At Apprentice skill, one will find 2-5 Archaeology Fragments. Above Apprentice level, one will find 3-6 fragments and occasionally a keystone.