CURRENT AFFAIRS

Detailed explanation-1: -Scientists have discovered the worlds second oldest grain of magnetic zircon from the Singhbhum rock at the Champua in Kendujhar district of Odisha. The zircon is a mineral that contains traces of radioactive isotopes.

Detailed explanation-2: -Scientists have discovered world’s second oldest grain of magmatic zircon (a mineral that contains traces of radioactive isotopes) from Champua from Singhbhum rock sample in Odisha’s Kendujhar district. It is an estimated 4,240 million years old, making it world’s second oldest rock ever to be discovered.

Detailed explanation-3: -“Thus, the Singhbhum rock from where the zicron was recovered is the second oldest and its zircon, the oldest magmatic zircon on earth,” Dr.

Detailed explanation-4: -Bedrock along the northeast coast of Hudson Bay, Canada, has the oldest rock on Earth.

Detailed explanation-5: -The newly found zircon crystals in the Kendujhar district of Odisha are the oldest yet unearthed from Indian soil. Like Earth’s oldest zircons – aged about 4.4 billion years found in the Jack Hills in Western Australia2 – they predate the first recorded rocks on Earth, estimated to be 3.9 billion years old.