GEOMORPHOLOGICAL STUDY OF WADI- HORAN DELTA DEPOSITS IN WESTERN IRAQ | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 17, Issue 1, December 2012, Pages 0-0 | ||
| Author | ||
| A. A. M. Al-Alwainy | ||
| Abstract | ||
| To study sediments of wadi Horan geomorphology, whose area reached 400 donems, within western of Iraq. A transect parallel to the debouchments with 2.66km length and 0.25km width was selected, 10 study locations on this transect were determined, which faraway 0.5km bread hways from wadi canal, ten selected pedons were described. Soil samples taken from every local diagnosed horizon, and analyzed to determined its some physical and chemical properties. According to analysis results to enable account their sedimentary statistical parameters according to particle size distribution, which included median diameter (MdØ), sediments sorting (ϬI) and graphic kurtosis (KG). The results showed that there are nine soil series at the debouchments of wadi Horan as mentioned: DW14, DW36, DW56, DW74, DW94, TW745, TW764, TW954, TW964, with internal well drained. Their textures vary in coarse and moderately fine, with low organic matter content but clearly high calcium carbonate which ranged between 280-303 gm.kg-1 soil with homogeneity distribution at soil pedons. The rising of soil content from this constituent was caused increasing in soil pH values which ranged between 7.6-8.1 sediments sorting values are between o.29-1.69 Ø indicating that sediments range from very well to poorly .Values of median diameter ranged between 1.32-7.24 Ø.The relation between the two parameters shows that a sedimentary environment of a quite river, which deposits as suspension . The values of graphic kurtosis ranged between 0.48-1.50 Ø,very platy kurtic and lepto kurric .The lepto kurtic,meso kurtic and very platy kurtic were composed 26.7% for every type, but platy kurtic was composed only 20.0%, existence the lepto kurtic type indicate to the Aeolian sediments and to presence two different sediment environments at the region. | ||
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