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TNPSC   |   17 November 2021 03:37:34

Earth's first landmass emerged in Singhbhum



  • A new study has challenged the widely accepted view that the continents rose from the oceans about 2.5 billion years ago
     
  • This happened 700 milllion years earlier- about 3.2 billion years ago- and that the earliest continental landmass to emerge may have been Jharkhnd's Singhbhum region
     
  • Scientists have found sandstones in Singhbhum with geological signatures of ancient river channels, tidal plains and beaches over 3.2 billion years old
     
  • Representing the earliest crust exposed to air

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