Topic: Earth Science

Scientists discovered a massive granite mass beneath Pine Island Glacier in West Antarctica. They found it by analyzing pink rocks on the surface and using special aircraft surveys.

Scientists have long been puzzled by bright pink granite boulders scattered across the dark volcanic peaks of the Hudson Mountains in West Antarctica. These unusual rocks seemed out of place, raising questions about where they came from and what they might reveal about Antarctica's past and future.

A research team led by the British Antarctic Survey analyzed the granite by examining the radioactive decay of elements trapped inside tiny mineral crystals. This technique showed that the rocks formed around 175 million years ago, during the Jurassic period.

Even with their age determined, the journey to the mountaintops remained unclear until scientists gathered new data from aircraft surveys over the region. Airborne surveys revealed an unusual signal beneath the glacier, which matched what scientists would expect from a massive granite body hidden below the ice.

This discovery provides important insight into how Pine Island Glacier behaved during the last ice age (around 20 thousand years ago). By understanding past ice thickness and movement patterns, scientists can improve computer models used to predict how Antarctica's ice sheets may respond to future climate change.

Why It Matters

Understanding how Pine Island Glacier behaved in the past will help scientists better predict its behavior in the face of climate change. This is important for India, as sea level rise could impact coastal populations and cities.

Key Facts

• Scientists discovered a massive granite mass beneath Pine Island Glacier in West Antarctica.
• The rocks formed around 175 million years ago, during the Jurassic period.
• Airborne surveys revealed an unusual signal beneath the glacier, which matched what scientists would expect from a massive granite body hidden below the ice.

Key Terms

Jurassic period

A time in Earth's history when dinosaurs roamed

Implications

Understanding how Pine Island Glacier behaved in the past will help scientists better predict its behavior in the face of climate change. This is important for India, as sea level rise could impact coastal populations and cities.