Board Thread:Lore Discussion/@comment-173.202.132.183-20140203224548/@comment-13446185-20140204010112

Theory One:

Archeologists dated the Adamantia to be constructed at least 2500 years before the First Era. This is the earliest recorded thing in any Human or Mer history and because of this is marked as the beginning of the Merethic Era.

Other sources though, claim that the Adamantia was actually built not only to discuss Lorkhan's punishment, but also to discuss the plans for the creation of Mundus. This dates it to a period before the existance of the Elhnofey (definitely the Dawn Era). There is also sources that conflict on when the Orsimer came to be, some sources state it was during the Merethic Era, others state that it was during the Dawn Era.

The Early Merethic Era is also filled with giant historical gaps that could be seen almost like a Dragon-Break, which would describe the Dawn Era (Due to its nonlinear timeline).

Conclusion:

The Dawn and Merethic Eras converge (incorrect dating on Adamantia). With this conclusion it can be said that the early Merethic Era was actually part of the Dawn Era and is only considered part of the Merethic Era because mortal scholars determined that the earliest recorded date (Adamantia's construction) as the beginning of the Merethic Era despite taking place before the Convention.

Theory Two:

The actual date could be unrecordable;

Since linear time did not start till the convention (which took place after the construction of Adamantia) it is highly possible that it is just plane impossible to put an actual date on the construction of the Adamantia (this is backed by the fact that no Dawn Era events actually have a date on them). It is very likely that ME2500 is the earliest recordable moment in history (the convention) and because of this Adamantia is dated to this year.