Sedimentological and Geochemical Study of Foundation Zone Sediment at Baiji City, North Iraq

The study includes grain size analysis, clay minerals, selected heavy metals, total dissolved solids and chemical properties. analyses of (78) samples indicate that the upper layers floodplain are fine where lower coarser. identification abundance minerals are; Kaolinite, Montmorilonite, Illite, Chlorite Palygorskite. (pH) sediments ranged (7.07–7.33) with average (7.22), values (EC) (1.71-6.42) (3.45) variation may be due to climate conditions, while sulfates SO3 between (0.256% –8.985%) (1.70), presence primary or secondary gypsum. (T.S.S) (0.490%–12.550%) (3.42) organic content range (0.342%–3.272%) (1.55).
 concentrations Co, Zn, Sr, Ni, Pb, Cd in (ppm), Ni elements higher than standards earth crust others within limits less that.