Bermuda Triangle Anomaly: Giant Underwater Structure Baffles Scientists

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Massive, Unprecedented Rock Layer Discovered Beneath Bermuda Island

A colossal rock layer, unlike any previously identified on Earth, has been detected deep beneath the island of Bermuda, leaving scientists puzzled by its origin and persistence. The layer, measuring an amazing 12.4 miles in thickness, resides just below the oceanic crust.

scientists have long been intrigued by Bermuda’s unusual geological profile. The island sits atop an oceanic swell, a region where the seafloor is elevated compared too its surroundings.Typically, these swells are formed by volcanic activity, such as the process seen in Hawaii, where rising plumes of hot material from the Earth’s mantle create islands and lift the seabed.However, bermuda presents a unique case.

The revelation was made by a team led by Dr. William Frazer, a seismologist at Carnegie Science in Washington D.C., and Yale University Professor Jeffrey Park.They analyzed seismic waves from distant earthquakes recorded at a station on Bermuda, meticulously tracking changes in the waves as they traveled through the rock up to 31 miles beneath the island’s surface. This analysis revealed the existence of the new layer, which is approximately twice as thick as any similar formation found under other islands.

“Typically, you have the bottom of the oceanic crust and then it woudl be expected to be the mantle,” Dr. Frazer explained. “but in Bermuda, there is this other layer that is emplaced beneath the crust, within the tectonic plate that Bermuda sits on.”

Did you know?– Bermuda’s oceanic swell has remained stable for 31 million years despite a lack of volcanic activity, making it a geological anomaly.

What makes Bermuda’s situation particularly perplexing is its long period of geological inactivity. The island hasn’t experienced a volcanic eruption for 31 million years, yet the oceanic swell remains remarkably stable, defying the usual pattern of subsidence after volcanic activity ceases. There is currently no evidence of a mantle plume – the typical source of heat and uplift for volcanic islands – or any ongoing activity that could explain the sustained elevation.

The newly discovered layer is approximately 1.5 percent less dense than the surrounding upper mantle rock. This lower density is crucial, as it allows the layer to “float” within the mantle and exert upward pressure on the crust above. Researchers believe that the final volcanic eruption 31 million years ago may have injected molten rock into the crust, which later solidified. This frozen material is now estimated to raise the ocean floor by roughly 500 meters.

Pro tip:– Lower density rock can exert upward pressure within the mantle, contributing to the sustained elevation of oceanic swells like Bermuda’s.

Further insight comes from Sarah Mazza, a geologist at Smith College who has extensively researched Bermuda’s volcanic history. She notes that the island’s ancient lavas are unusually low in silica, suggesting they originated from carbon-rich rock deep within the mantle.

“There is still this material that is left over from the days of active volcanism under Bermuda that is helping to potentially hold it up as this area of high relief in the Atlantic Ocean,” Mazza told Live science.She posits that this carbon was likely forced deep into the Earth during the formation of the supercontinent Pangea, between 900 million and 300 million years ago.

Reader question:– Could the formation of Pangea, a supercontinent that existed millions of years ago, have played a role in Bermuda’s unique geological features?

“The fact that we are in an area that was previously the heart of the last supercontinent is, I think, part of the story of why this is