Keyword Definition

Unsorted or poorly sorted, clastic sediment with a wide range of particle sizes, including a muddy matrix. Biogenic materials that have such texture are excluded. Distinguished from conglomerate, sandstone, mudstone based on polymodality and lack of structures related to transport and deposition of sediment by moving air or water. Assignment to an other size class can be used in conjunction to indicate the dominant grain size.


definition amplified to help distinguish diamicton, conglomerate and wackestone in this version

Fairbridge and Bourgeois 1978

Parents: Clastic sediment (57)

[Description taken from GeoSciML SimpleLithology201012.rdf]

Hierarchical classification

Compound material >> Unconsolidated >> Natural unconsolidated >> Sediment >> Clastic >> Diamicton



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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