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Drowned tropical island the size of Iceland found off Brazil’s coast


Still Waters

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In 2018, Brazilian and British scientists were exploring the seafloor around a volcanic plateau known as the Rio Grande Rise when they spotted rocks that looked like they belonged on dry land.

Watching video relayed from their remotely operated submersible 650 meters (2,100 feet) below the surface, unusual red clay layers caught their attention. "You just don't find red clay on the seabed," said Bramley Murton, a marine geologist from the National Oceanographic Centre in Southampton, U.K., who was on the expedition. "The deposits looked like tropical soils," he explained.

In a recent study, the team showed that the clay's distinctive mineral makeup could have formed only by open-air weathering in tropical heat and humidity. It's the latest in a string of discoveries hinting that this patch of ocean, 1,200 kilometers (750 miles) from Brazil's coast, was once an island.

https://www.livescience.com/planet-earth/imagine-a-lush-tropical-island-slipping-beneath-the-waves-drowned-island-the-size-of-iceland-found-off-brazil

 

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It's amazing to think of all the species we have catalogued that have walked,swam,and flown on this earth throughout it's history...

Makes one wonder what all has been lost to the depths throughout time.

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On 3/15/2024 at 5:46 PM, Still Waters said:

In 2018, Brazilian and British scientists were exploring the seafloor around a volcanic plateau known as the Rio Grande Rise when they spotted rocks that looked like they belonged on dry land.

Watching video relayed from their remotely operated submersible 650 meters (2,100 feet) below the surface, unusual red clay layers caught their attention. "You just don't find red clay on the seabed," said Bramley Murton, a marine geologist from the National Oceanographic Centre in Southampton, U.K., who was on the expedition. "The deposits looked like tropical soils," he explained.

In a recent study, the team showed that the clay's distinctive mineral makeup could have formed only by open-air weathering in tropical heat and humidity. It's the latest in a string of discoveries hinting that this patch of ocean, 1,200 kilometers (750 miles) from Brazil's coast, was once an island.

https://www.livescience.com/planet-earth/imagine-a-lush-tropical-island-slipping-beneath-the-waves-drowned-island-the-size-of-iceland-found-off-brazil

 

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