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Ruschel is an old expression of the miners' language from the Upper Harz and describes a tectonic disruption zone ("Ruschelzone") in which the affected rocks are intensely sheared , pleated, ground and crushed.

As a rule, this structure is formed along geological faults ("shear ducts") instead of the otherwise usual sharp dividing surfaces . In mining, rustling zones are a hindrance, as they usually do not contain ore and have little stability. However, if mineralizing hydrothermal solutions flow through the Ruschel zones , they can, like breccias , facilitate the impregnation of the rock with ores and lead to so-called “floor” mineralization.

According to Wimmenauer (1985), rustling as a petrographic term is more narrowly defined. They only refer to unconsolidated tectonic disruptive rocks with a relatively high proportion of medium-grain (cm to mm range) rock fragments and a low proportion of rock powder matrix .


  • Hans Murawski, Wilhelm Meyer: Geological dictionary. 10th edition, Enke Verlag, Stuttgart 1998, ISBN 3-432-84100-0 .
  • Wolfhard Wimmenauer: Petrography of igneous and metamorphic rocks. Enke Verlag, Stuttgart 1985, ISBN 3-432-94671-6 , p. 311 ff.