International Journal of Soil Science1816-4978xxxx-xxxxAcademic Journals Inc.10.3923/ijss.2008.138.148HassannezhadH. PashaeeA. KhormaliF. MohammadianM. 3200833The clay mineralogy of paddy soils with different water
table depth and drainage of Northern Iran were investigated to determine
their origin and factors controlling their distribution pattern in soils.
In this study sand, silt and clay fractions were separated by centrifuge
after the removal of organic matter, carbonates and sesquioxides. For
identification of clay minerals, clay suspensions were saturated by Mg
and K and then 10 mg of clays were placed on glass slides for XRD analysis.
In all of the soils studied, smectite, illite, chlorite, kaolinite and
quartz were identified. Clay mineralogy is probably more affected by parent
materials and less influenced by aquic and anthraquic conditions. However,
there are some indications that aquic and anthraquic condition may affect
on quantity of clay minerals, as shown by higher smectite in poorly drained
soils.]]>Abtahi, A. and F. Khormali,20013216431658Ehyaee, A.M. and A. Behbahanizade,19931st Edn.,Aoudjit, M., M. Robert, F. Elsass and P. Gurmi,199530135147Bouyoucos, G.J.,196254464465Bower, C.A. and J.T. Hatchea,196630525527Bronger, A., R. Winter and S. Sedov,1998341934Dixon, J.B. and S.W. Weed,19892nd Edn.,pp: 1244pp: 1244Jackson, M.L.,19752nd Edn.,Kitagawa, Y. and K. Itami,19969335345Kittrick, J.A. and E.W. Hope,196396319325Lee, B.D., S.K. Sears, R.C. Graham, C. Amrhein and H. Vali,20036713091317Nelson, D.W. and L.E. Sommers,19831983pp: 539-579pp: 539-579Ritvo, G., Y. Avnimelich and M. Kochba,20032718Sanguesa, F.J., J. Arostegui and I. Suarez-Ruiz,200035393410Soil Survey Staff,200610th Edn.,Pages: 333Pages: 333Gelsefidi, T.H., M.K. Eghbal, M.J. Givi and H. Khademi,200115122138Velde, B.,19951st Edn.,pp: 1-15pp: 1-15Wilson, M.J.,199934724Khormali, F. and A. Abtahi,2003206782Nanzyo, M., Y. Nakamaru, S.I. Yamasaki and P.H. Samante,1999164206215