India's 2.56-Billion-Year-Old Pichhore Granite Puzzles Geologists with Rare Structures
A granite formation in India's Pichhore region, estimated to be 2.56 billion years old, has intrigued scientists due to its rare spherical structures known as orbicules. The rock dates to the Neoarchean Era and contains inherited zircon crystals that point to the recycling of Earth's earliest crust. Researchers believe the granite formed through magma intrusion and rapid cooling deep underground. The discovery is considered significant for understanding the geological conditions of the early Earth and the formation of ancient continents.
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