19th century, even the Atlantis-was-Thera nonsense arose then, and it has been continually revived by various others for over a hundred years.
"Even when, during the respective Thera Conferences, individual scientists had pointed out that the magnitude and significance of the Thera eruption must be estimated as less than previously thought, the conferences acted to strengthen the original hypothesis. The individual experts believed that the arguments advanced by their colleagues were sound, and that the facts of a natural catastrophe were not in doubt... All three factors reflect a fantasy world rather than cool detachment, which is why it so difficult to refute the theory with rational arguments."The Future of the Past: Archaeology in the 21st Century by Eberhard Zangger, pp 49-50
I have never agreed with this absurdity. As to the Thera super eruption - I reckon there's a whole crib of corn thar to be shucked... Thank goodness we have super educated egg heads that can argue about how many angels can dance on the head of a pin and carry on for centuries... Aligning various ancient cultural chronologies may be successfully cemented soon after a source of universal unlimited free energy is discovered and implemented.