India’s 2.56-billion-year-old Pichhore rock baffles scientists
Geologists have identified a 2.56-billion-year-old orbicular granite formation in Madhya Pradesh, India. This rare geological find provides significant insights into the formation of Earth's earliest continental crust during the Neoarchean Era.
Why it matters
The discovery helps scientists understand the recycling processes of Earth's ancient crust and the evolution of geological structures billions of years ago.
A new study published in the journal Geosystems and Geoenvironment has identified the 2.56-billion-year-old Pichhore orbicular granite in Madhya Pradesh as one of the world's oldest known orbicular granites. The ancient rock has drawn geologists' attention because of its unusual spherical structures, known as orbicules, which are rarely found anywhere in the world. Beyond its remarkable age; the formation is helping researchers better understand the geological processes that shaped the Earth's earliest continental crust more than 2.5 billion years ago.A rare geological marvel hidden in central IndiaThe Pichhore orbicular granite is located near Kutawali village in the Shivpuri district of Madhya Pradesh, within the ancient Bundelkhand Craton - one of India's oldest geological regions. What sets this granite apart from ordinary rocks are its distinctive orbicules which are nearly spherical structures that can grow up to 30 centimetres in diameter.
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