Table 2 Statistics of grain size composition and parameters of Quaternary strata in the Bayan borehole.
From: Quaternary stratigraphy of Bayan borehole in eastern Songnen Plain and its paleoclimate significance
Formation | Depth/m | Clay <4 μm | Fine silt 4~16μm | Coarse silt 16~63 μm | Sand >63 μm | ||||
|---|---|---|---|---|---|---|---|---|---|
Average | Range | Average | Range | Average | Range | Average | Range | ||
Guxiangtun | 1.50~18.80 | 9.45% | 2.78%~29.84% | 31.41% | 11.33%~59.30% | 42.47% | 10.86%~62.09% | 11.66% | 0.00%~51.70% |
Harbin | 18.80~35.50 | 11.93% | 2.99%~36.68% | 42.86% | 16.40%~61.27% | 41.30% | 14.67%~59.04% | 3.90% | 0.00%~24.86% |
Huangshan | 35.50~58.00 | 14.20% | 5.26%~24.04% | 44.97% | 26.79%~66.64% | 37.54% | 12.43%~49.82% | 3.29% | 0.00%~14.87% |
Md/μm | Mz/μm | Sk | KG | ||||||
Guxiangtun | 1.50~18.80 | 22.69 | 6.26~47.30 | 28.75 | 7.42~65.77 | −0.19 | −0.46~0.01 | 1.03 | 0.84~1.36 |
Harbin | 18.80~35.50 | 14.95 | 5.83~35.80 | 18.54 | 7.39~42.33 | −0.15 | −0.29~0.03 | 1.05 | 0.87~1.47 |
Huangshan | 35.50~58.00 | 13.08 | 6.93~23.70 | 17.00 | 8.16~29.77 | −0.13 | −0.26~0.05 | 1.04 | 0.86~1.46 |
