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TONSTEIN

Tonstein

Type of sedimentary rock

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

Tonstein

List of countries by bentonite production

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

List of countries by bentonite production

List_of_countries_by_bentonite_production

Coal

Combustible sedimentary rock composed primarily of carbon

from recycled waste The Coal Question – Book by William Stanley Jevons Tonstein – Type of sedimentary rock FutureCoal – UK-based Pro-coal lobbying organization

Coal

Archaeothyris

Extinct genus of synapsids

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

Archaeothyris

Mudstone

Fine grained sedimentary rock whose original constituents were clays or muds

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

Mudstone

Seatearth

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

Seatearth

Tanis (fossil site)

Fossil site associated with the Cretaceous–Paleogene extinction event

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

Tanis (fossil site)

Tanis_(fossil_site)

Westphalian (stage)

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

Westphalian (stage)

Westphalian_(stage)

Marker horizon

Stratigraphic units used to correlate the age of strata in rocks

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

Marker horizon

Marker_horizon

Raton Formation

Geologic formation in New Mexico and Colorado, USA

Cretaceous–Paleogene extinction event. The boundary is represented by a 1-cm thick tonstein clay layer which has been found to contain anomalously high concentrations

Raton Formation

Raton_Formation

Raton Basin

Geologic structural basin in Colorado and New Mexico

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

Raton Basin

Raton_Basin

Moreno Hill Formation

Geologic formation in western New Mexico

environment. The shales include thin lenses of bituminous coal, including tonsteins (distinctive thin ash beds). The total maximum thickness is 217 meters

Moreno Hill Formation

Moreno_Hill_Formation

Callibrachion

Extinct genus of synapsids

the end of the 2010s, radiometric dating of volcanic ash (altered in tonsteins) intercalated in the sedimentary layers of several geological formations

Callibrachion

Ellisras Basin

mudstone derived from a mafic source. It includes some coal. A 2-m-thick tonstein layer forms the base of the overlying Grootegeluk Formation, a 70- to 80-m

Ellisras Basin

Ellisras_Basin

2019 in paleontology

sediment package directly overlain by the Cretaceous–Paleogene boundary tonstein is reported from the Tanis site (Hell Creek Formation, North Dakota, United

2019 in paleontology

2019_in_paleontology

Molteno Formation

Triassic geological formation in the Stormberg Group in Lesotho and South Africa

journal requires |journal= (help) Buhmann, D.; Heinemann, M. (1987). "Coal-tonsteins from the Molteno formation of the Maluti district, Transkei". S. Afr.

Molteno Formation