a poorly sorted sandstone containing fragments of rock and minerals in a clayey matrix.
- Compare graywacke.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use wacke in a sentence
Smoke-grey micaceous slaty-clay, much like certain beds of the old red sandstone, where it graduates into grey wacke.
wacke, wak′e, n. German miners' term for a soft, grayish kind of trap-rock.
These banks rise in some instances to hills of firm rock, generally wacke.The Highlands of Ethiopia | William Cornwallis Harris
The material of the rock here is wacke, in which there are many flints.Travels Through North America, v. 1-2 | Berhard Saxe-Weimar Eisenach
Wackelfiguren means figures made of wacke, a greenish-gray mineral, soft and easily broken.
British Dictionary definitions for wacke
obsolete any of various soft earthy rocks that resemble or are derived from basaltic rocks
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