greywacke


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Related to greywacke: quartz sandstone

greywacke

(ˈɡreɪˌwækə) or

graywacke

n
(Geological Science) any dark sandstone or grit having a matrix of clay minerals
[C19: partial translation of German Grauwacke; see wacke]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
According to a press release published by the ministry, "every object in the path is made in very hard Egyptian stone (such as granite and greywacke) and it can be touched and acknowledged with labels in braille language and electronic audio devices."
Every object is made of purely Egyptian stones such as granite and greywacke with labels in Braille and electronic audio devices.
The imperfectly drained Kaniwhaniwha soil (Bruce 1978) is developed in alluvium derived from tephra and varying amounts of argillite, greywacke sandstone, siltstone and andesitic basalt.
MAS Gold's projects include the advanced-stage Greywacke deposit, which hosts high-grade gold-bearing zones with a National Instrument 43-101 compliant (at a cut-off grade of 5 grams gold/tonne) Indicated Mineral Resource of 255,500 tonnes at 9.92 g/t Au plus an Inferred Mineral Resource of 59,130 tonnes at 7.42 g/t Au.
and Jiang, L.: 2014, Petrography and geochemistry of lower carboniferous greywacke and mudstones in Northeast Junggar, China: Implications for provenance, source weathering, and tectonic setting.
Detrital mineral composition of the Datta Sandstone shows that sandstones are lithic greywacke to sub litharenite.
| Greywacke Wild Sauvignon Blanc (PS28, Oddbins, or PS27 in a buy six deal at Majestic, 14% abv): The word "wild" indicates that natural yeasts on the grape skins and in the winery kicked off the fermentation.
| Greywacke Wild Sauvignon Blanc (PS28, Oddbins, or PS27 in a buy six deal at Majestic, 14% abv): The word "wild" of indicates that natural yeasts on the grape skins and in the winery kicked off the fermentation.
Greywacke New Zealand Sauvignon is made by their winemaker Kevin Judd and is "considerably better value" according to people who would know.
The Kona formation is mostly dolomite but also has interstratified layers of shale, greywacke, chert, and quartzite.