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red beds

plural noun

  1. sequences of red sedimentary rocks, usually sandstones or shales, coloured by the oxidization of the iron in them
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Example Sentences

Such conditions may have given rise to the high degree of oxidation in the famous Permian red beds.

The red beds are in the lower part of the John Day Formation.

Only a few months previously he had discovered fossil bones in the red beds of New Mexico, the since famous Permian deposits.

All which clearly shows that the red beds have been built out of the ruins of the older strata of the district.

And this shows that the Cheviots had already been deeply excavated by streams before any portion of the red beds was deposited.

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