Multifactors Analysis of Influencing Sediment Particle-size Measurement Results
In order to analyze the influencing factors of sediment particle-size measurement results,different pre-treatment methods and two laser particle-size analysis instruments were used to analyze samples collected from the archaeological site of Jinsha River.The results showed that:(1)The deep samples,which are rich in organic matter and carbonate,have coarser particle size measurement results after the addition of HCl.For shallow samples with less organic matter content,the particle-size is coarser after heating treatment.(2)For the same sample,the Beckman-Coulter laser particle-size analyzer is more sensitive to the relatively small amounts of fine particles,and the Malvern laser particle-size analyzer is more effective in detecting the coarse particles.Therefore,for samples from different depositional environments,different pre-treatment methods may be required,and the data should be established within the same measurement system in order to obtain more accurate paleoenvironment information.
万方数据
维普
