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hornfels

[ hawrn-felz ]

noun

  1. a dark, fine-grained metamorphic rock, the result of recrystallization of siliceous or argillaceous sediments by contact metamorphism.

hornfels

/ ˈhɔːnfɛlz /

noun

  1. a hard compact fine-grained metamorphic rock formed by the action of heat from a magmatic intrusion on neighbouring sedimentary rocks Also calledhornstone
“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

hornfels

/ hôrn′fĕlz′ /

  1. A fine-grained metamorphic rock having a uniform grain size and formed by contact metamorphism.
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Word History and Origins

Origin of hornfels1

1850–55; < German, equivalent to Horn horn + Fels rock, cliff
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Word History and Origins

Origin of hornfels1

German: literally, horn rock
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Example Sentences

From diabases, basalts, andesites and other igneous rocks a third type of hornfels is produced.

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Horneyhorn fly

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