The Hills of Sicily were Submerged 40 Meters Below Water During the Great Flood.

A ridge in southeastern Sicily eroded by the Great Flood

Kevin Sciberras and Neil Petroni

The jumbled deposits of rocks found on a hilltop in southeastern Sicily are left behind by the Great Flood, the largest known flood in Earth's history, which refilled the Mediterranean Sea five million years ago.

Rock deposits and eroded hills in this part of the Italian island of Sicily are the first evidence found on land of a mega-flood, scientists say. pole curling at the University of Southampton, UK. “You can actually walk around and look at it,” Carling said.

About 6 million years ago, during the so-called Messinian salinity crisis, the Mediterranean Sea separated from the Atlantic Ocean and began to dry up. Vast salt deposits were formed during this period, and sea levels may have fallen by more than a kilometer.

About 5.3 million years ago, water once again began to flow through the Strait of Gibraltar into the Mediterranean Sea. Researchers initially thought the giant waterfall near Gibraltar had been reclaimed over tens of thousands of years.

But in 2009, a massively eroded channel was discovered at the bottom of the strait, suggesting more sudden deluges could occur. Since then, this evidence has continued to grow.

Carling said the flood first filled the western basin of the Mediterranean Sea. The eroded topography of the ocean floor suggests that it then spilled into the eastern basin over an underwater ridge known as the Sicilian Sill.

team members Giovanni Barreca The professor at the University of Catania in Italy, who grew up in southeastern Sicily, suspected that the land there was also formed by the Great Flood. So he and his fellow researchers took a closer look at the rock samples and analyzed them.

Sure enough, we found that the intricate deposits near the tops of some hills contained rocks that had been eroded from deeper layers and somehow transported to the top of the hills. “You can tell by their nature that they come from a lower level,” Carling says. “And they were carried over this hill.”

Many of the hills themselves have a streamlined shape, resembling the hills of Montana carved out by the great floods caused by the bursting of ice dams at the end of the last ice age. “They're very distinctive,” Carling says. “And only a very large, massive flood could streamline a feature of this magnitude.”

Detail of a Sicilian ridge formed by a huge flood

Daniel Garcia Castellanos

The researchers estimated that at the peak of the flood, water was flowing at about 115 kilometers per hour, covering the top of the hill, which is about 100 meters above modern sea level, with about 40 meters of water.

Researchers also investigated the ocean floor around Sicily and found further evidence of the deluge, including eroded ridges and channels. Their modeling suggested that the entire Mediterranean Sea was backfilled between two and 16 years, but the main flooding event in Sicily probably lasted only a few days, Carling said.

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Source: www.newscientist.com

Archaeologists say beach and underwater ruins in Sicily offer insights into early immigration

Sicily is thought to be one of the first islands inhabited by humans during the European Upper Paleolithic period. Research to understand the early occupation of the island has focused primarily on the north coast. An international team of archaeologists led by Washington University in St. Louis is currently searching for signs of human habitation in 25 caves and trenches in southeastern Sicily, Italy.

Coastal and underwater cave sites in southern Sicily contain important new clues about the routes and fate of early human migrants to the island. Image credit: Ilaria Patania.

Sicily, the largest island in the Mediterranean, is considered by many scholars to be the oldest permanently inhabited island of human ancestors in the region, but it is unclear when and how these early settlers arrived. It remains unclear whether he accomplished this feat.

Although the island is less than three miles from mainland Italy, it would have been extremely difficult for early humans to cross the ocean.

In the ancient Greek poem The Odyssey, Homer describes Odysseus sailing past the mythical sea monsters Scylla and Charybdis as they crossed the Strait of Sicily.

This strait was well known to ancient sailors. They attributed the terrifying power of its waves and whirlpools to powerful monsters.

In modern times, thousands of migrants from North Africa attempt to cross the Channel each year. Many never make it, and some capsize just a few hundred meters from landing.

“We're not just looking for the first arrivals, we're looking for the first communities,” says Dr. Ilaria Patania, a researcher at Washington University in St. Louis.

“Understanding the timing of Sicily's early colonization provides important data on the patterns and modes of Sicily's early expansion. homo sapiens To the Mediterranean. ”

“This study shows that new ways of thinking and seeing can reveal previously invisible patterns,” added TR Kidder, a professor at Washington University in St. Louis.

“Previous scholars believed that the ruins on Sicily's southern coast were eroded or too damaged to yield useful information.”

“But discovering underwater ruins opens up a whole new area of ​​research.”

“This allows us to reconsider the migration routes of these earliest modern human ancestors.”

Scholars agree that humans reached Sicily by 16,000 years after the Last Glacial Maximum.

But that date is puzzlingly late, given that humans are known to have dispersed from land to Siberia about 30,000 years ago.

This discrepancy has led some to wonder whether humans actually reached Sicily long before the currently accepted date.

Also, no one yet knows whether humans arrived in Sicily by sea or by foot over a land bridge, or even from what direction.

“The challenge in understanding the spread of early modern human ancestors is that we don't fully understand how they spread and colonized the world so early on,” Professor Kidder said. said.

“Did people come across the Strait of Messina from Italy or from the south along the coast of Africa?”

“Or could they have been island hopping in the Mediterranean? Locating a location on the southern coast helps us consider their route, and therefore their mode of movement.”

“In southeastern Sicily, very few Upper Paleolithic sites have been excavated and analyzed using scientific methods,” Dr. Patania said.

“Although our project is still in its early stages, we have already identified and assessed more than 40 locations of interest, of which around 17 locations have been more accurately relocated based on older identification information. .”

Two of the new sites identified by the research team may contain evidence of Upper Paleolithic human occupation, including fossilized animals.

Coruzzi is located at the southernmost tip of Sicily. This site was originally identified by other researchers in the 1940s.

“This is the location where a second land bridge would have connected this island to Malta,” Dr Patania said.

“When we investigated this site, we found European wild donkey teeth and stone tools.”

“Analysis of the ruins at this site may provide insight into the final leg of the human journey south down Sicily's southernmost coast and towards Malta.”

In the summer of 2024, archaeologists began excavating the second site, a cave called Camporato.

“Here we found evidence of sea level changes caused by the last ice age and local earthquakes. We are still investigating,” Dr. Patania said.

“We reconstruct not only the period of human habitation, but also the environments in which these people lived and how they coped with natural phenomena such as earthquakes, climate and environmental changes, and even volcanic eruptions. I am thinking of doing so.”

of findings appear in the diary PLoS ONE.

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I. Patania others. 2024. Between land and sea: an interdisciplinary approach to understanding the early occupation of Sicily (EOS). PLoS ONE 19 (10): e0299118;doi: 10.1371/journal.pone.0299118

This article is a version of a press release provided by Washington University in St. Louis.

Source: www.sci.news