Mathilda’s Weird World Weblog

October 24, 2008

Tsunami clue to Atlantis found

Filed under: Atlantis, Drowned cities — Tags: , — mathilda37 @ 4:14 pm

Tsunami clue to ‘Atlantis’ found 
 
A submerged island that could be the source of the Atlantis myth was hit by a large earthquake and tsunami 12,000 years ago, a geologist has discovered.


Spartel Island now lies 60m under the sea in the Straits of Gibraltar, but some think it once lay above water.

The finding adds weight to a hypothesis that the island could have inspired the legend recounted by the philosopher Plato more than 2,000 years ago.

Evidence comes from a seafloor survey published in the journal Geology.

Marc-André Gutscher of the University of Western Brittany in Plouzané, France, found a coarse-grained sedimentary deposit that is 50-120cm thick and could have been left behind after a tsunami.

Dr Gutscher said that the destruction described by Plato is consistent with a great earthquake and tsunami similar to the one that devastated the city of Lisbon in Portugal in 1755, generating waves with heights of up to 10m.

 Some think the Atlantis legend was inspired by real events
The thick “turbidite” deposit results from sediments that have been shaken up by underwater geological upheavals.

It was found to date to around 12,000 years ago – roughly the age indicated by Plato for the destruction of Atlantis, Dr Gutscher reports in Geology.

Spartel Island, in the Gulf of Cadiz, was proposed as a candidate for the origin of the Atlantis legend in 2001 by French geologist Jacques Collina-Girard.

It is “in front of the Pillars of Hercules”, or the Straits of Gibraltar, as Plato described. The philosopher said the fabled island civilisation had been destroyed in a single day and night, disappearing below the sea.

Sedimentary records reveal that events like the 1755 Lisbon earthquake occur every 1,500 to 2,000 years in the Gulf of Cadiz.

But the mapping of the island carried out by Dr Gutscher failed to turn up any manmade structures and also showed that the island was much smaller than previously believed.

This could make it less likely that the island was inhabited by a civilisation

Personally I’d suspect either a massive earthquake in the Canaries region or an asteroid splashing down in the Atlantic as the cause.

May 14, 2008

Sunken city off the coast of cuba.

Filed under: Ancient Technology, Atlantis, Drowned cities — Tags: , , , , — mathilda37 @ 9:35 am

 cuba-city.gif

 ‘Lost city’ found beneath Cuban waters

A team of explorers working off the western coast of Cuba say they have discovered what they think are the ruins of a submerged city built thousands of years ago.
Researchers from a Canadian company used sophisticated sonar equipment to find and film stone structures more than 2,000 feet (650 metres) below the sea’s surface.

aerial-cuba-florida.jpg

 

They say they still do not understand the exact nature of their discovery, and plan to start a thorough analysis of the site – off the tip of the Guanahacabibes Peninsula – in January.

Advanced Digital Communications is one of four firms working in a joint venture with President Fidel Castro’s government to explore Cuban waters, which hold hundreds of treasure-laden ships from the Spanish colonial era.

The explorers first spotted the underwater city last year, when scanning equipment started to produce images of symmetrically organized stone structures reminiscent of an urban development.

cuban-geophys.jpg

 It’s a really wonderful structure which really looks like it could have been a large urban centre
 
In July, the researchers returned to the site with an explorative robot device capable of highly advanced underwater filming work.

The images the robot brought back confirmed the presence of huge, smooth blocks with the appearance of cut granite.

Some of the blocks were built in pyramid shapes, others were circular, researchers said.

They believe these formations could have been built more than 6,000 years ago, a date which precedes the great pyramids of Egypt by 1,500 years.

“It’s a really wonderful structure which really looks like it could have been a large urban centre,” ADC explorer Paulina Zelitsky told the Reuters news agency.

“However, it would be totally irresponsible to say what it was before we have evidence.”

The thing in this news item from the BBC that worries me is the figure of 650m depth. When would that ever have been at the surface? The sea levels are only supposed to have risen 140m maximum. There would have to have been some subsidence on an Atlantean scale for that to have been possible.

Chance of being real… 5%

 

 

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