Yangtze's age revealed

Geologists narrow window on time of the Chinese river’s origin

By Erin Wayman, 15:55 PM April 22, 2013

The world’s third longest river has a new age: The Yangtze River was in place by at least 23 million years ago, geologists report April 22 in the Proceedings of the National Academy of Sciences.

The Yangtze stretches for 6,300 kilometers across China, from the Tibetan Plateau to the East China Sea. Geologists have debated the river’s age for more than a century, with estimates ranging from 2 million to 45 million years old.  

A team led by Hongbo Zheng of Nanjing Normal University in Chin...

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