Bidló, András

English

Bidló András

Bidló Gábor

Gucsik Arnold

László R.

University of Szeged

Acta Mineralogica-Petrographica, Abstract Series 4, Szeged, 2004 MINERALOGICAL STUDY OF SOILS FROM WEST HUNGARY BIDLÓ, A.,1 BIDLÓ, G.,2 GUCS1K. A..' LÁSZLÓ, R.1 1 Faculty of Forestry, University of West Hungary [Erdömérnöki Kar, Nyugat-magyarországi Egyetem], Bajcsy-Zsilinszky u. 4., Sopron, 9400, Hungary 2 Department of Construction Materials and Engineering Geology, Technical University o f Budapest [Építőanyagok és Mérnökgeológiai Tanszék, Budapesti Műszaki Egyetem], Műegyetem rakpart 3 -9 . , Budapest, 1111, Hungary E-mail: abidlo@emk.nyme.hu The healthy growth of trees depends on the nutrient supply of the forest resources. There is no fertilisation in the different types of the Hungarian forests, because of the economical and natural conservation reasons. In this case, the nutrient supply of the forests is dominantly based on the content and cycling of nutrients in soils. The amount of the nutrients is strongly connected with the mineralogical contents of parent materials and rate of the weathering processes. The purpose of this work is mineralogical and pedological studies of different types of soils from Iván and Sopron, West Hungary. After the descriptions and sampling of the soil pro-files from the above mentioned sites, the chemical and physi-cal characteristics of soils including pH-value (pHH,o, pHKci), acidity (YI, y2), CaC03-content, cation exchange capacity and exchangeable cations, particle size fractions, hygroscopic moisture content by Kuron, limit of plasticity by Arany, humus content, nitrogen content, AL-soluble K and P, as well as EDTA- and KCl-soluble nutrients. On the basis of stan-dards, the mineralogical constituents were analysed by XRD using Náray-Szabó's and Péter Tiborné's methods and by derivatograph. Soils at both sampling sites have been shown very acid and clayey loam physical characters. In general, the parent material (Iván: fluviosediments from River Rába; Sopron: weathered rocks from the metamorphic formations and fluviosediments of the Alps) is close to surface in the soil profiles. Quartz plays an important role in the soil of site Iván, which corresponds to the strong weathering process in the regional geological settings. Moreover, in some cases, albite and microcline have been observed in specimens. Only one sample contains adularía, which probably was transported by seedlings. A little amount of muscovite was also presented in all of the samples. Anorthite was found in only two soil pro-files. Illite, vermiculite, montmorillonite, chlorite and chamo-site as sheet silicates were also identified in this area. The soil profiles of Sopron mainly contain quartz, musco-vite and albite. Anorthite and microcline (on the metamor-phic based profiles) appeared in a few profiles. Sanidine was also found in only one sample. Clinochlor, leuchtenbergite, pennine and amesite as chlorites were also observed in variable amounts in all soil profiles. Acknowledgements This work was supported by OTKA (Hungarian National Re-search Foundation-T 035051). References NÁRAY-SZABÓ, I . , PÉTER, T . ( 1 9 6 4 ) : F ö l d t a n i K ö z l ö n y , 9 4 , 444—451. NÁRAY-SZABÓ, I., PÉTER, T. (1967): Acta Geologica Hunga-rica, 11, 347 -356 . 16 www. sei. u-szeged. hu/asvanytar>/acta. htm 16 

Mineralogical study of soils from West Hungary

http://acta.bibl.u-szeged.hu/31562/1/mineralogica_as_004_016.pdf

Mineralogical study of soils from West hungary

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