Mining. the top of the rock stratum underlying a vein or bed of ore.: Compare hanging wall (def. 1).
Geology. a mass of rock lying beneath a fault plane.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use footwall in a sentence
But the hardest rock of the hanging or footwall, however, is seldom as hard as the harder class of ore.
To these timbers are fixed small timbers along the footwall, to which are fastened the lagging and ladders.
Stringers are given the same characteristics as veins, but divided into hanging, footwall, and other varieties.
The ratio of ore area to total explored area, measured in the plane of the footwall, was 21-½ per cent.The Economic Aspect of Geology | C. K. Leith
The total area of ore measured on the footwall was 785 acres.The Economic Aspect of Geology | C. K. Leith
British Dictionary definitions for footwall
the rocks on the lower side of an inclined fault plane or mineral vein: Compare hanging wall
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
Scientific definitions for footwall
The block of rock lying under an inclined geologic fault plane. See more at fault. Compare hanging wall.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.