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World’s second oldest rock is from Odisha

World’s second oldest rock is from Odisha
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A rock sample found eight years ago in Champua, in Kendujhar district of Odisha has been declared the world’s second oldest rock.
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World’s second oldest rock is from Odisha:

i. Scientists have found a grain of magmatic zircon (a mineral that contains traces of radioactive isotopes) in the rock. Through which it has been estimated to be 4,240 million years old.

ii. The discovery was made by researchers from University of Calcutta and Curtin University, Malaysia, and Chinese Academy of Geological Sciences, Beijing.

iii. The findings were published in the journal Scientific Reports. Presence of zircon older than this was found only in Jack Hill, Western Australia, which is 4,400 million years old, making it the oldest known rock sample.