Allotigenic and allotigenic accessory trace element contents in different age soil of glaciolacustrine basins

Abstract

. Vilnius. 2010. Vol. 52.No. 1–4(69–72). P. 46–52. ISSN 1392–110XTh e distribution of allotigenic elements (AE) (Li, B, Ga, Sc, Ni, Cr, Co, V, Rb) and allotigenic accessory elements (AAE) (Y, Yb, La, Ti, Zr, Nb) in sandy, sandy loamy or loamy-clayey soil of fi ve glaciolacustrine basins was studied to recognise diff erences in total contents of these trace ele-ments mainly as a result of the diff erent duration of weathering and composition of parent mate-rial. Weathering in the Simnas–Balbieriskis basin of the South Lithuanian phase was the longest, in the Venta, Jūra–Sesupė and Kaunas–Kaisiadorys basins of the Middle Lithuanian phase was shorter, and in the Mūsa basin of the North Lithuanian phase the shortest. Th e diff erence in the duration of weathering is well refl ected in sandy soil; it explains most of the signifi cant diff er-ences in the content of trace elements and indicates the tendency of a decrease of most AEs and an increase of most AAEs with soil age, while sandy loamy or loamy-clayey soils do not show any signifi cant dependence on weathering duration; the tendencies of variation of most AEs as soil age increases, are opposite compared to sandy soil, and the variation of the contents of AAEs is less expressed, except an increase of Nb. Th is is predetermined by a more diffi cult infi ltration through these types of soil. Most of the signifi cant diff erences in AE contents in sandy loamy or loamy-clayey soil of diff erent basins can be explained by the lithological infl uence of the prevail-ing type of surface glaciolacustrine sediments (clay or coarser sediments) and the mineralogical infl uence of the main minerals of su rface glaciolacustrine clay (ill ite and kaolinite), which depend on the material brought by diff erent glacier lobes.Key words: allotigenic elements, allotigenic accessory elements, soil, duration of weathering, glaciolacustrine sediments, hydromica, kaoliniteReceived 29 June 2009, accepted 24 August 2010Rimantė Zinkutė, Alfredas Radzevicius, Vaidotas Kazakauskas. Nature Research Cen-tre Institute of Geology and Geo graphy, T. Sevcenkos Str. 13, LT-03223 Vilnius, Lithuania.E-mail: zinkute@geo.lt, Alfredas.Radzevicius@geo.lt, kazakauskas@geo.lt