[ hawrn-felz ]
/ ˈhɔrn fɛlz /
a dark, fine-grained metamorphic rock, the result of recrystallization of siliceous or argillaceous sediments by contact metamorphism.
Origin of hornfels
1850–55; < German, equivalent to Horn horn + Fels rock, cliff
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for hornfels
From diabases, basalts, andesites and other igneous rocks a third type of hornfels is produced.
British Dictionary definitions for hornfels
/ (ˈhɔːnfɛlz) /
a hard compact fine-grained metamorphic rock formed by the action of heat from a magmatic intrusion on neighbouring sedimentary rocksAlso called: hornstone
Word Origin for hornfels
German: literally, horn rock
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
Science definitions for hornfels
[ hôrn′fĕlz′ ]
A fine-grained metamorphic rock having a uniform grain size and formed by contact metamorphism.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.