Ancient Soils Found to be Rich in Carbon

Image: An eroding bluff on the U.S. Great Plains reveals a buried, carbon-rich layer of fossil soil. Image credit: Jospeh Mason

sci-news.com - May 27th 2014

The team analyzed a soil known as the Brady soil, which was formed more than 13,500 years ago in what is now Nebraska, Kansas and other parts of the Great Plains. It lies up to 6.5 m below the present-day surface and was buried by a vast accumulation of windborne dust known as loess beginning about 10,000 years ago.

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