Tonstein (from the German "Ton", meaning clay, plus "Stein", meaning rock) is a hard, compact sedimentary rock that is composed mainly of kaolinite or...

of water. However, the term bentonite, as well as a similar clay called tonstein, have been used for clay beds of uncertain origin. For industrial purposes...

Aeolis quadrangle Composition of Mars Timeline of Mars Science Laboratory Tonstein – Type of sedimentary rock Blatt, H., and R.J. Tracy, 1996, Petrology....

from recycled waste The Coal Question – Book by William Stanley Jevons Tonstein – Type of sedimentary rock World Coal Association – international non-profit...

631042. S2CID 84706899. Hess J.C., Lippolt H.J. (1986): 40Ar/39Ar ages of tonstein and tuff sanidines: new calibration points for the improvement of the Upper...

layer about 0.8m thick (unit 2), capped by a 1 – 2 cm layer of impactite tonstein that is indistinguishable from other dual layered KPg impact ejection materials...

few place the boundary within the Kasimovian. U-Pb radiometric dating of tonstein beds in Spain estimate that the Asturian lasted from 310.7 to 307.5 Ma...

laterally continuous layers (bands), called "tonsteins", found within coal beds. In the case of tonsteins found within coal, the formation of flint clays...

extinction event. The boundary is represented in the basin by a 1-cm thick tonstein clay layer in the Raton Formation which has been found to contain anomalously...

and correlating sedimentary rocks and dating them. Volcanic ash beds (tonsteins and bentonite beds) and impact spherule beds, and specific megaturbidites...