Crossword-Solution: GREYWACKE
We have 2 clues for the answer “GREYWACKE”
| Clue | Answers |
|---|---|
| any dark sandstone or grit having a matrix of clay minerals | 1 answer |
| GRAYWACKE | 2 answers |
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Dermatological complaint
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Hint 1 meaning
An inflammatory disease of the skin, characterized by the
presence of redness and itching, an eruption of small vesicles, and the
discharge of a watery exudation, which often dries up, leaving the skin
covered with crusts; -- called also tetter, milk crust, and salt rheum.
Hint 2 anagram
EZACEM
Hint 3 another clue
eruption
9 +1
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Sentences with GREYWACKE (5)
Applying these facts to natural productions, we have reason to believe that clay-slate, and many kinds of greywacke, are amorphous feldspar, as transition limestone is amorphous marble, basalt and lava mixtures of amorphous zeolite and augite.
Angular fragments of Lydian stone, scattered along the valleys, seemed to indicate that the transition schist is the basis of the strata of greywacke.
But even this hypothesis (though the best that has been thought of) will scarcely enable us to explain all the contortions which not merely the beds of gneiss, but likewise of mica slate and clay slate, and even greywacke slate, exhibit.
This fossil-bearing set of strata he first styled the "fossiliferous greywacke series," changing it in 1835 to "Silurian system." In the same year Sedgwick introduced the name "Cambrian series" for the older and lower members.
GREYWACKE, or GRAUWACKE (a German word signifying a grey earthy rock), the designation, formerly more generally used by English geologists than at the present day, for impure, highly composite, gritty rocks belonging to the Palaeozoic systems.