Dating of paleolakes in the central altiplano of bolivia
Dating of paleolakes in the central altiplano of bolivia - what is three minute dating
Strand lines around the edge of the Altiplano mark the former levels of the great paleolakes but because they are said to slant from north to south, also confirm that the southern Altiplano has dropped in elevation.If it were possible to establish the date at which the Altiplano sank, that would reveal to us the date of the end of "Atlantis".
Atlantis is presumed to have existed in one of the wet periods when its canals were fed by the overflowing waters of Lake Titicaca.
view of the site at Pampa Aullagas from the east showing as Plato called it "a mountain low on all sides".
This refers to the circular volcanic plateau which surrounds the central cone and which also contains the concentric rings.
The youngest was a shallow paleolake Coipasa, radiocarbon-dated between 11400BC and 9500BC. The youngest deep paleolake Tauca existed 16000BC to 11790BC. Older paleolake Minchin dated from 30,000 to 23,700BC in different phases.
An analysis of core samples taken from the centre of the Salar de Uyuni shows that there are several layers of salt and layers of lacustrine mud, showing that the plain was successively covered by lakes alternating with dry spells.
Although the contour map does not show the circular channels which actually exist on site, it is clear that the level of Lake Tauca at 3760m (12,335ft) or Lake Coipasa at 12,204ft would have been appropriate to enter the volcano filling the circular channels (depending on configuration of the volcano at the time) and creating rings of water and rings of land and that the date is roughly in the timescale described by Plato, that is, once the paleolakes dried up leaving residual water in the channels and surrounded by the level plain thus fulfilling Plato's description of how the "god of the sea carved the rings out of the centre of the island, making it impassible to man since ships and sailing had not yet been invented!
" Plato reported that a canal was dug through the surrounding plain to bring boats from the lake to the volcano which suggests that the surrounding altiplano originally had a higher elevation, (making lakes Tauca and Coipasa correspondingly shallower) and today, on site it does appear as if the plain has dropped, leaving the volcano now high in the air.In order for the circular rings of water to function as harbours with access to the lake, the lake must have been considerably higher and a higher level would also be necessary to feed the perimeter canal and irrigation system which was said to have run around the adjacent level rectangular plain.view of the outer ring at Pampa Aullagas, the upper part is covered in volcanic boulders originally created by flowing lava while the bare sand on the slopes beneath the boulders suggests the plain has dropped in elevation away from the original volcanic mountain.Plato mentioned that the rings of the land levels were raised a sufficient height above the level of the sea, so on the one hand, too high a lake level would drown the rings of land and too low a level would not allow the circular channels to function as harbours.left, a highstand of 12,401 feet for paleolake Tauca would probably submerge all the outer and middle rings at Pampa Aullagas right, at 12,335 feet, paleolake Tauca would extend to the middle channel on the western side, but submerging the outer rings of land at their present-day elevations, suggesting that they may also have at one time been at a higher level before sinking by earthquakes.sequence 7, at some time the surrounding plain collapsed to a level whereby the volcano and surrounding plateau became inaccesable to the waters from Lake Poopo which today in the wet season would only reach to the outer rim of the volcano, making it an island but insufficient to fill the interior channels.