- Mining. the underside of the wall rock overlying a vein or bed of ore.Compare footwall(def 1).
- Geology. a mass of rock overhanging a fault plane.
Origin of hanging wall
First recorded in 1770–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hanging wall
The two fault faces are known as the “hanging-wall” and the “foot-wall.”
- the rocks on the upper side of an inclined fault plane or mineral veinCompare footwall
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
- The block of rock lying above an inclined geologic fault plane. See more at fault. Compare footwall.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.