Assessment and Analysis of Precambrian Basement Soil Deposits Using Grain Size Distribution
, , and | Jun 13, 2020
About this article
Article Category: Original scientific paper
Published Online: Jun 13, 2020
Page range: 235 - 243
Received: Nov 20, 2019
Accepted: Dec 12, 2019
DOI: https://doi.org/10.2478/rmzmag-2019-0019
Keywords
© 2020 Gideon Layade et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
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![Cross Plot of mean against standard deviation [30].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647369924e662f30ba53d1fb/j_rmzmag-2019-0019_fig_005.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20240519T044453Z&X-Amz-SignedHeaders=host&X-Amz-Expires=18000&X-Amz-Credential=AKIA6AP2G7AKP25APDM2%2F20240519%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Signature=9489f326d906c58f23af1d6fd8b4568fcfdf7984deee515f095039a122ba8d24)
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Graphic Standard deviation with classes of sorting.
| ∅ 0.35 to ∅ 0.50 | well sorted |
| ∅ 0.50 to ∅ 0.71 | moderately well sorted |
| ∅ 0.71 to ∅ 1.00 | moderately sorted |
| ∅ 1.00 to ∅ 2.00 | poorly sorted |
Comparative result of the Grain Size Analysis for soil samples in phi (Φ).
| GB1 | 1.46 | 1.01 | −0.05 | 1.35 |
| GB2 | 1.55 | 0.54 | −0.12 | 1.36 |
| GB3 | 1.96 | 0.64 | −0.13 | 1.50 |
| GB4 | 1.29 | 0.95 | 0.18 | 1.03 |
| GB5 | 1.09 | 1.26 | 0.03 | 1.17 |
| GB6 | 1.19 | 0.91 | 0.06 | 1.72 |
| GB7 | 2.06 | 1.20 | −0.25 | 1.66 |
| GB8 | 1.50 | 1.26 | 0.01 | 0.97 |
| GB9 | 2.33 | 0.84 | −0.08 | 1.21 |
| GB10 | 1.69 | 0.42 | 0.20 | 1.40 |
| GB11 | 2.03 | 0.57 | 0.26 | 0.58 |
| GB12 | 1.37 | 0.87 | 0.02 | 1.66 |
| GB13 | 1.94 | 0.62 | −0.13 | 1.67 |
| GB14 | 1.19 | 0.91 | 0.06 | 1.72 |
Description of the Soil samples with Grain Size Analysis.
| GB1 | Medium sand, poorly sorted, ear symmetrical and leptokurtic. |
| GB2 | Medium sand, moderately well sorted, coarse-skewed and leptokurtic. |
| GB3 | Medium sand, moderately well sorted, coarse-skewed and leptokurtic. |
| GB4 | Medium sand, moderately sorted, fine skewed and mesokurtic. |
| GB5 | Medium sand, poorly sorted, near symmetrical and leptokurtic. |
| GB6 | Medium sand, moderately sorted, near symmetrical and very leptokurtic. |
| GB7 | Fine sand, poorly sorted, coarse-skewed and very leptokurtic. |
| GB8 | Medium sand, poorly sorted, near symmetrical and mesokurtic. |
| GB9 | Fine sand, moderately sorted, near symmetrical and leptokurtic. |
| GB10 | Medium sand, moderately sorted, fine skewed and leptokurtic |
| GB11 | Medium sand, moderately sorted, near symmetrical and leptokurtic |
| GB12 | Medium sand, moderately sorted, near symmetrical and very leptokurtic. |
| GB13 | Medium sand, moderately well sorted, coarse skewed and very leptokurtic. |
| GB14 | Medium sand, moderately sorted, near symmetrical and very leptokurtic. |
Classification scale describing the skewness.
| ∅ 0.1 to ∅ 0.3 | Fine skewed |
| ∅ −0.1 to ∅ 0.1 | Near symmetrical |
| ∅ −0.3 to ∅ −0.1 | Coarse-skewed |
Classification of the graphic mean.
| ∅ – 1 to ∅ 0 | Very coarse sand |
| ∅ 0 to ∅ 1 | Coarse sand |
| ∅ 1 to ∅ 2 | Medium sand |
| ∅ 2 to ∅ 3 | Fine sand |
| ∅ 3 to ∅ 4 | Very fine sand |
Classification scale and description of Kurtosis.
| <∅ 0.67 | Very Platykurtic |
| ∅ 0.67 to ∅ 0.90 | Platykurtic |
| ∅ 0.90 to ∅ 1.11 | Mesokurtic |
| ∅ 1.11 to ∅ 1.50 | Leptokurtic |
| ∅ 1.50 to ∅ 3.00 | Very leptokurtic |