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GEOCHEMICAL CHARACTERIZATION OF SOILS OF SLOPE SEDIMENTS FROM CALCIC CHERNOZEM AND RED CLAY RENDZINA

Nyilas, Tünde and Czirbus, Nóra and Hetényi, Magdolna (2011) GEOCHEMICAL CHARACTERIZATION OF SOILS OF SLOPE SEDIMENTS FROM CALCIC CHERNOZEM AND RED CLAY RENDZINA. NÖVÉNYTERMELÉS, 60 (1 Supl). pp. 287-290. ISSN 0546-8191

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Abstract

Nowadays the geochemical investigation of soils has received increasing attention owing to the significant role played by both their mineral and organic composition in the processes of pedogenesis, in the migration of contaminants and in the global carbon cycle. This work was performed as part of a project aiming at the geochemical characterization of the organic matter stored in the major soil types of Hungary. This paper investigates mineral and organic geochemical characteristics of soils of slope sediments came from calcic chernozem (CCH) and red clay rendzina (RCR) on the basis of element distributions in the soil profile, soil organic matter characterization by Rock-Eval pyrolysis and examination of climatic conditions effects in connection with weathering processes. Temperate climatic conditions are indicated by proportion of main mineral elements during pedogenesis in CCH and both warm tropical and temperate climatic conditions in RCR. The source material of RCR was generated by long, multi-phased weathering processes taking place in different micro-environment on the strength of inorganic geochemical results. According to results of komplex geochemical investigations geochemical lines are at 10 and 50 cm in RCR and at 20, 50 and 60 cm in CCH. The signs of pedogenesis in the upper 40 cm of studied RCR profile suggest the lack of reworking during sliding down on the slope. Mixed character was proved in the CCH profile. The field of CCH has been an undisturbed buffer zone for a long time so nowadays redepositioned layers are overwritten by new soil-chemical processes, geochemical border-lines change.

Item Type: Article
Uncontrolled Keywords: geochemistry, soil organic matter, Rock-Eval pyrolysis, mineral composition, XRF
Subjects: Q Science / természettudomány > QE Geology / földtudományok > QE02 Geochemistry / geokémia
Depositing User: Dr. Magdolna Hetényi
Date Deposited: 17 Mar 2014 08:33
Last Modified: 19 Mar 2014 13:27
URI: http://real.mtak.hu/id/eprint/10896

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