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6b3bf58
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We know that relatively minor sea-level rises could set off major ice-sheet breakups, and it has been suggested by Stephen Oppenheimer that the tremendous earthquakes caused by isostatic rebalancing at the end of the Ice Age could have stirred up 'mountain-topping superwaves' in the northern regions of the Atlantic and Pacific Oceans. Other than Oppenheimer's own investigations, however, my impression is that while many brilliant individual scientists have studied individual post-glacial phenomena in great depth, very little has yet been done to investigate all these phenomena together as part of a complex system or to consider the effects on the earth and its human population of multiple, interacting cataclysms -- floods, lands subsiding into the sea, earthquakes, volcanic eruptions -- all occurring at the same time.
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earthquakes
ice-sheets
superwaves
volcanism
deep-human-history
sea-level-rises
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Graham Hancock |
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cd6f0cc
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The light-shaded Porcupine Bank can easily be seen directly west of Ireland, in exactly the same place, and roughly the same size, as the legendary Hy-Brasil on the portolan charts. The entire bank lies between 40 and 200 metres beneath the surface, and most of it (probably more than 600 square kilometres) would have been exposed at the Last Glacial Maximum, 21,000 years ago.
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portolan-charts
deluges
ice-age-civilizations
sea-level-rises
lost-civilizations
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Graham Hancock |
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c175582
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The suspicion that certain ancient authorities possessed good knowledge of the real shape of the Atlantic and its islands, and of the lands on both sides of it, must also arise from any objective reading of Plato's world-famous account of Atlantis. [...], this story is set around 11,600 years ago -- a date that coincides with a peak episode of global flooding at the end of the Ice Age. The story tells us that 'the island of Atlantis was swallowed up by the sea and vanished', that this took place in 'a single dreadful day and night' and that the event was accompanied by earthquakes and floods that were experienced as far away as the eastern Mediterranean. But of more immediate interest to us here is what Plato has to say about the geographical situation in the Atlantic immediately the flood that destroyed Atlantis: 'In those days the Atlantic was navigable. There was an island opposite the strait [the Strait of Gibraltar] which you [the Greeks] call the Pillars of Heracles, an island larger than Libya and Asia combined; from it travellers could in those days reach the other islands, and from them . For the sea within the strait we are talking about [i.e. the Mediterranean] is like a lake with a narrow entrance; the outer ocean is the real ocean and the land which entirely surrounds it is properly termed continent ... On this land of Atlantis had arisen a powerful and remarkable dynasty of kings who ruled the whole island; and many other islands as well, and parts of the continent ...' Whether or not one believes than an island called Atlantis ever existed in the Atlantic Ocean, Plato's clear references to an 'opposite continent' on the far side of it are geographical knowledge out of place in time. It is hard to read in these references anything other than an allusion to the Americas, and yet historians assure us that the Americas were unknown in Plato's time and remained 'undiscovered' (except for a few inconsequential Viking voyages) until Colombus in 1492.
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discovery
deluges
geography
ice-age-civilizations
lost-knowledge
sea-level-rises
exploration
lost-civilizations
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Graham Hancock |