Scientists Discover Giant Fan-Shaped Structure Beneath East Antarctic Ice Sheet, Revealing Tectonic Secrets
Researchers have identified a massive fan-shaped structure beneath the East Antarctic Ice Sheet, which may have formed during the breakup of the ancient supercontinent Gondwana. This structure, known as the East Antarctic Fan-Shaped Basin Province, is a result of a tectonic process called distributed rotational extension. This process involves the Earth's crust deforming outward from a central point, creating triangular basins. The discovery, published in Nature Geoscience, suggests that East Antarctica's well-known features, such as the Wilkes and Aurora basins, were formed by this process. The study highlights the dynamic tectonic history of East Antarctica, challenging the perception of the region as a stable cratonic area. 
