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grauwacke
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grauwacke
‖ grauwacke Geol. (ˈgraʊvakə) Also 8 grau-wacken, 9 grawacké, grauwack. [Ger., f. grau grey + wacke wacke.] = greywacke.1794 Kirwan Elem. Min. (ed. 2) I. 235 Its [Argillite's] transitions are into..grau-wacken [etc.]. 1806 Davy in Phil. Trans. XCVII. 10 Grauwackè from North Wales. 1828 G. Young Geol...
Oxford English Dictionary
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Rothaeuser Grauwacke Formation
The Rothaeuser Grauwacke Formation is a geologic formation in Germany. It preserves fossils dating back to the Devonian period.
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Greywacke
Greywacke or graywacke (German grauwacke, signifying a grey, earthy rock) is a variety of sandstone generally characterized by its hardness, dark color
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greywacke
greywacke Geol. (ˈgreɪwækə) Also graywacke, greywack. [Anglicised form of grauwacke.] A conglomerate or grit rock consisting of rounded pebbles and sand firmly united together; originally applied to various strata of the Silurian series. Also attrib.1811 Pinkerton Petral. I. 293 Almost the whole of ...
Oxford English Dictionary
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Rieder
There is a grauwacke quarry here which is also checkpoint 61 on the Harzer Wandernadel.
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Coblenzian
Coblenzian, a. Geol. (kəʊˈblɛntsɪən) Also Coblentzian, Coblenzien. [ad. F. coblentzien (A. Dumont 1848, in Mém. de l'Acad. R. des Sciences de Belgique XXII. 4), f. Coblentz (G. Koblenz), a city in western Germany: see -ian.] Of, pertaining to, or designating the uppermost division of the Lower Devon...
Oxford English Dictionary
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Ardclough
The grauwacke consists of small and finely rounded and angular grains of quartz, numerous minute scales of mica, small fragments of clay-slate, and sometimes The grauwacke consists of small and finely rounded and angular grains of quartz, numerous minute scales of mica, small fragments of clay-slate, and sometimes
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wacke
wacke Geol. (ˈwækə) Also 9 wacca, wake, wacké. [a. Ger. wacke, dial. wake (MHG. wacke large stone, OHG. waggo pebble), a miners' word, adopted by Werner as a geological term.] A sandstone-like rock, resulting from the decomposition of basaltic rocks in situ. Cf. grauwacke, greywacke.1803 tr. Pallas'...
Oxford English Dictionary
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Hassel Auxiliary Dam
The bedrock consists mostly of grauwacke, but with some thinly laminated argillaceous shale as well.
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Gemündener Maar
All that remains, however, is a narrow ridge of slate, grauwacke and sandstone between the maar and the neighbouring Lieser valley.
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Wealden
Wealden, a. and n. (ˈwiːldən) [f. weald + -en4. The suffix is here employed arbitrarily in a sense remote from its ordinary use. As the formation of the word was app. suggested by the adjs. in -en, it may be presumed that the inventor regarded the adjectival use as primary, and the substantival use ...
Oxford English Dictionary
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Großer Rettenstein
It also has a mighty, craggy, summit block made of limestone, four hundred metres high, that stands atop base of grauwacke and primary rock (Urgestein
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phytolith
ˈphytolith (ˈfaɪtəlɪθ) In sense 1 † -lite. [f. phyto- + -lite, -lith. In F. phytolithe.] † 1. A fossil plant. Obs.1794 Sullivan View Nat. II. 175 The former are called zoophytes; the latter phytolites. 1849 Murchison Siluria xvi. 402 The so-called ‘transition’ and ‘grauwacke’ phytolites described by...
Oxford English Dictionary
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Wiehl
It is 16.8 m high, has a regular hexagonal ground plan and was built from Grauwacke.
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