Discover Greywacke, a winery in Marlborough, New Zealand and explore their most popular wines. Winery Greywacke. Marlborough, New Zealand. Average Rating 4.1 (27129 Ratings) Wines. 9. Winemaker: Kevin Judd Contact Greywacke 44 Godfrey Road. Blenheim. 7201. New Zealand. Greywacke @Greywacke greywacke
Graywacke is a variety of impure sandstones and is generally characterized by its hardness, dark color, and poorly sorted angular grains of quartz, feldspar, and small rock of lithic fragments set in a compact fine clay and muddy matrix (Figs 5.26(B), 5.31 and 5.32).The term graywacke (from the German "graywacke") in the geological literature was first enacted in the eighteenth …
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