Antarctica's hidden landscape is a massive, fan-shaped geological structure
In short: For decades, Antarctica was a mystery of rumors—secret bases and alien signals. But modern deep-ice scanning has revealed something far more profound: a continent-scale geological feature buried under miles of ice that reveals the violent tectonic history of our planet.
Researchers have identified the East Antarctic Fan-shaped Basin Province, a massive network of hidden basins concealed beneath ice that reaches thicknesses of over three kilometers (nearly two miles) in some areas. While features like the Wilkes and Aurora basins, as well as Lake Vostok—the largest subglacial lake on Earth—have been studied individually for years, this study is the first to recognize them as parts of a single, interconnected geological structure. This discovery was made possible by using advanced deep-ice scanning technology to map the continent in great detail. These findings are finally bringing long-buried secrets to light. The study confirms that these features exist beneath ice layers exceeding three kilometers thick.
The province's unique shape resembles a hand with a fixed thumb and spreading fingers. This pattern was created through a process called distributed rotational extension, where continental crust stretches outward from a central point. Experts suggest these events happened across various geological periods tied to how the old Gondwana supercontinent grew and shaped. This process might have also influenced the final split between Australia and Antarctica. This formation might constitute a premier instance of rotational extension discovered inside continental crust. It likely developed through multiple tectonic episodes. These events were associated with the evolution of the ancient supercontinent. The province's formation provides a new way to understand how the continent's crust stretched.
This discovery is more than a history lesson; it has significant implications for modern climate science. The specific shape of the bedrock beneath the ice dictates how glaciers move across the continent today. By mapping this hidden landscape, scientists can better predict the stability of regions particularly vulnerable to climate change and identify where new subglacial basins or lakes might be located. The mapping helps determine the exact location of various subglacial basins and lakes. It also clarifies how the bedrock influences current ice movement across the landmass. This data is crucial for understanding the behavior of the ice sheet today. Scientists are now investigating which specific geodynamic processes were responsible for creating this province.
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Sources
- Summary by Intellect · source: We Finally Know What’s Really Hidden Under Antarctica
- Also: Scientists discover vast hidden structure beneath Antarctica’s ice
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