Carbonate rich (mudstone)

Keyword Definition

Mudstone that contains between 10 and 50 percent carbonate minerals in the mud size fraction. Carbonate origin is not specified.


'carbonate-rich mudstone' definition limits carbonate to mud-size fraction to avoid overlap with 'impure carbonate sedimentary rock'. If carbonate minerals are in sand or gravel size fractions, use 'impure carbonate sedimentary rock' The operational test typically used to identify this category is if the rock fizzes when hydrochloric acid is applied. The '10 percent carbonate' criteria is a fuzzy boundary. Rocks typcially called marlstone are subdivided into a carbonate rich variety, and a

This vocabulary

See Also: calcareous loess

Parents: Generic mudstone (118)

[Description taken from GeoSciML SimpleLithology201012.rdf]

Hierarchical classification

Sample >> Lithosphere >> Rock >> Whole >> Rock >> Sedimentary >> Generic mudstone >> Carbonate rich



Category: Analysed material

The different kinds of sample material collected in the field have been classified hierarchically. Examples: “till”, “soil”, “vegetation”. Taken from the “Sample_Types_SHARED” database table.

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