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Mysterious underwater Greek ‘city’ built by microbes, contend scientists

When divers off a shores of Greece’s Zakynthos island found well-spoken floors and what looked to be round mainstay bases, they suspicion that they had found a stays of an ancient civilization. The divers’ find might be some-more ancient than they ever imagined, according to examine published Friday – yet it wasn’t built by tellurian hands. 

The site was not combined and deserted in ancient Grecian times, yet rather in a Pliocene era, approximately 5 million years ago. And credit goes to microbes, not a Greeks, scientists news in a paper in a biography Marine and Petroleum Geology. 

“The site was detected by snorkelers and first suspicion to be an ancient city port, mislaid to a sea,” lead author Julian Andrews, a highbrow of environmental scholarship during a University of East Anglia, UK, says in a press release. “There were what outwardly looked like round mainstay bases, and paved floors. But mysteriously no other signs of life – such as pottery.”

That deficiency led scientists to examine further. Mineralogical and chemical research suggested that they were not looking during a stays of an ancient civilization, submerged by a sea after a tidal call struck their city, yet rather a formula of ancient geological processes.

Researchers dynamic that there is substantially a subsurface error during a site, which, yet not visible, spews methane gas by a lees of a sea bed.

“There’s no active liquid venting during this site, yet carrying pronounced that there are many around a world,” Dr. Andrews told CNN. “These gas leaks are utterly common, they’re not an surprising materialisation – the earth’s membrane is utterly a leaky material.”

For microbes that live in sediment, that methane gas becomes fuel. As they consume a gas, a lees itself changes composition, formulating a cement-like compound – a healthy routine called concretion. 

Erosion unclosed a concrete-like structures, that Dr. Andrews says are shaped of a element called dolomite. 

“This kind of materialisation is utterly singular in shoal waters,” he pronounced of a grouping, found only dual to 5 meters next a waves. “Most identical discoveries tend to be many hundreds and mostly thousands of meters low underwater.”

Researchers contend that while a fossils aren’t a stays of an ancient city, they might still be engaging for divers to explore.

Although a structures that scientists once believed were a columns and floors of an ancient civilization were never used by humans, they now form a reef-like insurance for Mediterranean fish, Andrews told CNN. 

Article source: http://www.csmonitor.com/Science/2016/0603/Mysterious-underwater-Greek-city-built-by-microbes-say-researchers

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