HOLA mi amigo Don Jose' Dueno de Real e Minas de Tayopa,
The way it is written in Timaeus, quote "For which reason the sea in those parts is impassable and impenetrable, because there is a shoal of mud in the way; and this was caused by the subsidence of the island.
Plato uses the present tense "IS" impassable, implicating that he is speaking of his own time or at least the time of Solon 638 BC–558 BC, and not saying "WAS" impassable as if speaking about the distant past. I take it Plato was saying that in his own time, the region where Atlantis was, was still quite shallow and with a muddy bottom.
We may be splitting hairs here amigo, when we are saying "gradual subsidence" - for exactly what is gradual? If gradual means a sinking of say two feet a year, then over 2000 years, great depths could be created; if we are saying it is a tenth of an inch per year, then over the same course of time the depth would only be less than seventeen feet. Also, a gradual subsidence might not be a uniform phenomenon, it might be a tenth of an inch per year over several hundred square miles, yet increasing to a foot per year over another part, several feet a year over other parts etc. The way nature tends NOT to be uniform in geologic actions, this seems more likely than the idea of the whole island slowly sinking a uniform rate over a long period of time. We can see this variation in uplifts as well, with parts of the Rockies rising several feet per year, other parts only rising a fraction of an inch, some parts not rising at all etc. Uplifts due to earthquakes are also not gradual or uniform; some large areas of Chile rose two to 20 feet in a matter of minutes in one earthquake in our lifetimes for example.
I have a side-question for you amigo - what will it mean to you, should your location prove to BE Atlantis? (NOT a test or trick question compadre, just curious about what it means to you.) Thank you in advance,
your friend,
Oroblanco