Sediment classification NEN5104

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Sediment Classification NEN5104
In 1989 the Netherlands Standardisation Institute (NNI) published a sediment classification standard NEN5104 ("e;NEN5104 Classificatie van onverharde grondmonsters"e;). This document defines the nomenclature of the lithological description of drilling samples for all unconsolidated deposits. The starting point for the classification is the division of a sample into fractions, one comprising organic matter and four others based on particle size.

Particle size

Name of the fraction

< 2 µm
>= 2 µm
>= 63 µm
>= 2 mm
>= 63 mm
>= 200 mm
>= 630 mm

- < 63 µm
- < 2000 µm
- < 63 mm
- < 200 mm
- < 630 mm

lutum
silt
sand
gravel (incl. shells)
cobble
boulders
blocks

The weight percentages of the fractions in a sample are plotted in a series of three triangular graphs. According to NEN5104 fivelithologies exist: gravel, peat, sand, clay and loam. A further subdivision is done on basis of admixtures.

More information about this classification system can be found at: www.nen.nl/normshop; however, you must have a NEN subscription to download the standards.

Go to the start page to select a datatype and make a request, or use the grafical selection to select data, or go to the page Enter Selection Criteria for boreholes.

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This topic:
	Drilling into the Dutch subsurface
	The output format
	Sample data display
	Sediment classification NEN5104
	Standard Description method for Boreholes (SBB)
	Quality code
	More on quality
	Quality of the location data
	Quality Improvement Project

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