Did Ancient Antarctic Mountains Trigger the Explosion of Life?

Current maps of Antarctica show a frozen wasteland, but beneath the ice lies the ghost of a mountain range that once rivaled the Himalayas. Researchers from the Australian National University have identified the remnants of these peaks, not through direct excavation of the ice sheet, but by analyzing microscopic minerals trapped in deep-ocean sediments. For decades, the reconstruction of the supercontinent Gondwana suggested a complex assembly of landmasses, yet the exact scale of the mountains forming in the Antarctic sector remained speculative. The new evidence shifts this picture, suggesting that Antarctica was the epicenter of a massive tectonic event between 650 and 450 million years ago. The Zircon Trace Because the physical peaks were eroded millions of years ago and are now buried under kilometers of ice, researchers relied on zircon crystals. These minerals act as geological capsules; they are nearly indestructible and preserve a chemical record of the pressure and temperature under which they formed.