Laser-diffraction and pipette-method grain sizing of Dutch sediments: correlations for fine fractions of marine, fluvial, and loess samples

Abstract To evaluate correlations between silt and clay fractions determined by pipette method and laser diffraction, samples from Dutch fine marine, fluvial, and loess deposits were analysed by both methods. For fluvial deposits, correlations for fractions <2 and >50 μm were excellent (R 2 > 0.95), those for 2–4, 4–8, 16–32 and 32–50 μm were satisfactory (R 2 = 0.80 – 0.95), while that for the fraction 8–16 μm had an R 2 of only 0.68. For marine deposits, correlations for <2 and >50 μm were in the same range, but those of all other fractions except 8–16 μm were lower. In the lo... Mehr ...