- a poorly sorted sandstone containing fragments of rock and minerals in a clayey matrix.
Origin of wacke
Examples from the Web for wacke
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.
Wacke, wak′e, n. German miners' term for a soft, grayish kind of trap-rock.
- obsolete any of various soft earthy rocks that resemble or are derived from basaltic rocks
Word Origin and History for wacke
rock resembling sandstone, 1803, from German Wacke, from Middle High German wacke "a large stone," from Old High German wacko "gravel," probably from Old High German wegan "to move." A miner's word, brought into geology by German geologist Abraham Gottlob Werner (1750-1817).