SEDIMENTATION PATTERN OF SOILS SOUTH EL-AMIRIA, ALEXANDRIA GOVERNORATE, EGYPT | ||
| Menoufia Journal of Soil Science | ||
| Article 1, Volume 6, Issue 6, July 2021, Pages 183-196 PDF (1.23 M) | ||
| Document Type: original papers | ||
| DOI: 10.21608/mjss.2021.188177 | ||
| Authors | ||
| A. M. A. Zayed; H. M. A. El-Tapey; A. A. Al-Toukhy | ||
| Soils, Water and Environmental Research Institute, Agricultural Research Center, Giza, Egypt | ||
| Abstract | ||
| The current study aims to identify the sedimentation pattern of soils south El-Amiria, Alexandria Governorate, Egypt. This includes study of grain size parameters, depositional environments and hydrodynamic conditions of these soils. The study area is located between longitudes 29o 47` 55``and 30o 30` 05`` East and latitudes 29o 29` 30`` and 30o 30` 05`` North and comprise an area of about 571168 Feddan. The area is characterized by two main physiographic units namely Lacustrine plains and Windblown sand. The obtained results indicated that: I. Soils of lacustrine plains appeared that: 1-Grain size parameters as follows: The fine silt was the predominant constituent of median (Md) as average size. Graphic mean (Mz), generally, differed from fine to medium and coarse silt. Measure of uniformity appeared very poorly sorted values (σ1) which indicated that the sediments are transported and deposited by water. Measure of symmetry cleared that, the sediments have values of strongly coarse skewed (SKI). These values indicate that, the examined sediments have a tail of coarse grains. Measure of peakedness showed that, the distribution of grains between platy & very platykurtic and lepto & very leptokurtic. 2- The depositional environments of lacustrine plain soils were fluvial or deltaic. 3- The hydrodynamic conditions, in general, were pelagic suspension (T). II. Soils of windblown sand showed that: 1-Grain size parameters as follows: Coarse sand was a median (Md) and graphic mean (Mz). Moderately and moderately well sorted values (σ1) represented the measure of uniformity. This indicated that, sediments are transported and deposited under a combined action of both water and wind. Strongly fine skewed class was the measure of a symmetry, which indicated that the examined sediments have a tail of fine grains. Lepto and very leptokurtic were the measure of peakedness. 2-The depositional environment of soil of windblown sand was either fluvial or deltaic. 3-The mechanism of transportation was rolling (N-O). | ||
| Keywords | ||
| Statistical size parameter; sorting; skewness; kurtosis | ||
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