Article By Frank Bergman
Scientists have discovered an enormous geological “structure” buried nearly two miles beneath Antarctica’s ice that may have played a major role in tearing the frozen continent away from Australia.
The never-before-reported formation consists of roughly 30 vast basins carved into the bedrock and linked together across an area covering as much as half of East Antarctica.
Researchers say the buried system spreads outward from a central point in a massive fan-like pattern, resembling a hand with its fingers stretched apart.
The discovery includes some of Antarctica’s most significant subglacial formations, including the Wilkes and Aurora basins, as well as the basin containing Lake Vostok, the largest known subglacial lake on Earth.
Scientists believe the structure formed hundreds of millions of years ago as sections of Earth’s crust gradually rotated around a central point.
That ancient movement may have dramatically reshaped Antarctica — and helped create the fracture that eventually separated it from Australia.
Ancient ‘Fan’ May Have Reshaped Antarctica
Researchers believe the giant underground fan dates back to before the breakup of the supercontinent Gondwana.
“This fan may be the result of a rotational movement of Earth’s crust that occurred before the breakup of the supercontinent Gondwana,” the scientists explain.
That movement may have transformed huge sections of the continent.
To the west, researchers believe it may have lifted the Gamburtsev Mountain Range.
To the east, the shifting crust may have rotated another mountain system into what became the Transantarctic Mountains.
And to the north, scientists say the same movement may have produced the fracture line that ultimately guided the separation of Antarctica from Australia.
The finding adds another major piece to the growing mystery surrounding the world hidden beneath Antarctica’s enormous ice sheet.
Hundreds of Mysterious Earthquakes Detected Deep Below the Ice
The discovery comes as scientists uncover increasingly strange geological activity beneath Antarctica.
Researchers recently detected hundreds of previously unknown earthquakes under the massive David Glacier in East Antarctica after using artificial intelligence to reanalyze old seismic data.
The earthquakes were discovered in recordings collected between 2001-2004 and 2012-2015.
Although the quakes were relatively small, ranging from magnitudes 1.6 to 3.5, scientists were stunned by where they originated.
The seismic events occurred more than 43 miles below the surface.
That is far deeper than most earthquakes typically occur.
Even more unusual, the earthquakes were located in the middle of tectonic plates instead of along the fault lines where seismic activity is normally concentrated.
Researchers classified the events as “intraplate intermediate-depth earthquakes,” a phenomenon that does not fit cleanly into traditional models of plate tectonics.
AI Exposes Activity Scientists Had Missed for Years
The earthquakes had remained buried within years-old seismic records until researchers applied advanced deep-learning systems to the data.
The discovery has raised the possibility that supposedly stable areas around the world could contain hidden seismic zones that older detection methods failed to identify.
“Advanced seismic detection capabilities, such as those used here, could reveal that intraplate IDEs are more common globally than currently recognized,” the study states.
The Antarctic earthquakes also follow the discovery of another unusual form of seismic activity known as “continental mantle earthquakes,” detected roughly 55 miles below sea level.
Scientists believe different processes are responsible for those events, but both findings expose major gaps in current understanding of what is happening deep beneath Earth’s crust.
Antarctica’s Hidden World Continues to Grow Stranger
Antarctica remains one of the least understood places on the planet.
Beneath miles of ice sits a vast concealed landscape containing enormous mountain ranges, subglacial lakes, volcanic systems, valleys, and geological formations that scientists are still mapping.
Now researchers have uncovered both a colossal ancient structure that may have helped split Antarctica from Australia and hundreds of unexplained earthquakes deep beneath the continent.
The discoveries are forcing scientists to reconsider long-held assumptions about the frozen landmass and the forces still operating underneath it.
Researchers have not said the newly detected earthquakes present an immediate threat.
But Antarctica’s hidden geology is proving far more complex than previously understood.
And with artificial intelligence now exposing activity that went unnoticed for decades, scientists are discovering that some of the continent’s biggest secrets may still be buried miles beneath the ice.
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