graywacke
Use Graywacke in a sentence
ə noun
Geology. a dark-gray coarse-grained wacke.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
|
Link To graywacke
Collins
World English Dictionary
greywacke or (US) graywacke (ˈɡreɪˌwækə) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| any dark sandstone or grit having a matrix of clay minerals | |
| [C19: partial translation of German Grauwacke; see | |
| graywacke or (US) graywacke | |
| —n | |
| [C19: partial translation of German Grauwacke; see | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
00:10
Graywacke
is always a great word to know.
So is soil. Does it mean:
| portion of the earth's surface consisting of disintegrated rock and humus |
| to dissolve out soluble constituents from ashes and soil by percolation |
American Heritage
Science Dictionary
| graywacke (grā'wāk', -wāk'ə) Pronunciation Key
Any of various dark gray, coarse-grained sandstones that contain abundant feldspar and rock fragments and often have a clay-rich matrix. Graywackes are thought to originate in environments where erosion, transportation, and deposition happen so quickly that minerals and rock fragments do not have sufficient time to break down into finer constituents. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Primarily fine-grained pelitic rocks and graywacke, variably metamorphosed.
The regolith weathered from gray and brown acid sandstone in places interbedded with shale and graywacke.
Schist and gneiss in alternating layers suggest a turbidite sequence of shale and graywacke.
Related Searches
Nearby Words
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
