NFLD grab sample

Keyword Definition

Grab samples of organic-rich sediment from the central basins of lakes were obtained with a tubular steel corer that was allowed to free-fall from the water surface. A sediment core 10 to 20 cm long was typically obtained from a depth of about 20 to 120 cm below the sediment-water boundary (the depth depending on the penetrability of the sediment and the water depth at the sample site). After discarding the top few centimetres, the remaining material was placed in a pre-numbered, Kraft-paper sample bag.

Hierarchical classification

Null >> Null >> Sample >> Lithosphere >> Unconsolidated >> Terrestrial >> Fluvial >> Lake sediments >> Centre basin >> Grab sample >> NFLD grab sample



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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