rauhwacken.

1810 Trans. Dublin Soc. 6 148 I may give here Lehmann's account of these flötz layers, which is to be found also in Gerhard's History of the Mineral kingdom... IV. Coarse wacke (rauhwacke), consisting of sand, clay, and calcareous earth, from 12 to 20 toises thick.]

1821 Ann. Philos. New Ser. 2 347 In the Hartz, the lower gypsum always occupies a position between rauhwacke and swinestone.

1855 J. Phillips Man. Geol. viii. 251 The zechstein and rauchwacke represent on a greater scale the yellow magnesian and upper laminated limestone of the north of England.

1910 Geogr. Jrnl. 36 326 It will be noticed that these flats coincide with outcrops of Rauchwacke and Dolomite.

1968 Philos. Trans. (Royal Soc.) B. 254 10 The Anhydrite Gruppe..often contains cavernous dolomite caused by the leaching of the original gypsum or salt content (Rauchwacke).

1975 Geol. Soc. Amer. Bull. 86 473/1 Nappe piles of lower Mesozoic pelite in the Carson region of Nevada contain sheet-like carbonate complexes..referred to as carbonate breccia nappes and the rocks within them collectively as rauhwacke, after similar rocks in the Alpine chains.

2007 Ecol. Engin. 29 374/1 The bedrock consists of ‘Rauhwacke’ of the Triassic.