The Atlantic Ocean was a shallow ocean as oceans go at the beginning of the Anthropocene epoch

Atlantis or the island that was called Atlantis was located on the present day Azores Plateau that was above the water at that time is part one of the hypothesis. Atlantis existed up to 12,000 years ago as a huge volcanic island that was in fact a large land mass that is called a seamount in the Atlantic Ocean. The Seamount was supported by a caldera under it with the Mid-Atlantic Rift running across it similar to how Iceland is structured today. The location was the Azores Plateau. The difference from Iceland being that it is also at the conjunction of 3 tectonic plates instead of 2^[21]. 

Consider a trail of seamounts that accumulate from the same mantle plume over millions of years. It is beyond the scope of my hypothesis to formulate precisely how long it took the Azores Plateau to form and to interact with 3 tectonic plates. It was and is a unique structure and whatever plate it was part of separated from it through a fault during an eruption to become an unstable configuration as described in the Triple Junction section^[22] that still exists today but is mostly submerged. 

The Atlantic Ocean was a shallow ocean as oceans go at the beginning of the Anthropocene epoch. We need to consider if we can blame humanity completely for what began in the Anthropocene epoch. Clearly, humanity cannot control climate changes that are caused by events of the nature being describedin this hypothesis, although it can by taking certain strategies attenuate the effects to a small degree to dampen the effects of those things that humanity is causing to happen^[23].

Nevertheless the Anthropocene epoch should remain named as it is because humanity suffered a terrible tragedy at the time that begs description. The landmass of Atlantis completely blocked the Gulfstream. In fact, the Gulfstream, if it existed at all at that time since the Atlantic was shallow compared to what it is now, was completely turned back upon itself. In effect, the Gulfstream was completely turned off compared to how it functions today, being blocked by Atlantis and the islands that were above the level of the then much shallower water. 

This created a condition that supported the glaciers that existed on both sides of the Atlantic ocean and over the greatest extent of the Northern hemisphere and perhaps the entire world. Considering the effects upon the world in areas other than those mentioned in the Altantis Location Hypothesis is beyond the scope of this hypothesis. Since the Gulf Stream could not flow as much water in this condition, if it was flowing at all. Glaciers were also present in the south Atlantic and also all over the world due to the climate the world supported at that epoch. Plato's description of Atlantis the island was accurate to a degree that was geologically factual, not legendary. This part of the geologic description in Timaeus and Critias is supported by science today.

https://en.wikiversity.org/wiki/Atlantis/Location_Hypotheses