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Old Red Sandstone

noun

  1. a thick sequence of sedimentary rock (generally, but not always, red) deposited in Britain and NW Europe during the Devonian period
  2. (in Britain) another term for Devonian
“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

Smoke-grey micaceous slaty-clay, much like certain beds of the old red sandstone, where it graduates into grey wacke.

It is not known how far normal sediments are associated with the Old Red Sandstone type of deposit.

This sandstone appears, from its texture and position, to be the "old red sandstone" of geologists.

Asterolepis, a genus of primitive ganoid fishes, found only in a fossil state in the Old Red Sandstone.

Assuredly no young geologist will find more stimulating chapters than those penned by the author of the Old Red Sandstone.'

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