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Discriminant Function Analysis of Miocene pelitic sediments from the Southwestern Part of the Pannonian Basin System, Croatia (CROSBI ID 613336)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Grizelj, Anita ; Peh, Zoran Discriminant Function Analysis of Miocene pelitic sediments from the Southwestern Part of the Pannonian Basin System, Croatia // Abstract / Babek, Ondrej ; Matys Grygar, Tomaš ; Uličny, David (ur.). Olomouc: Palacky University, Olomouc, 2014. str. 28-29

Podaci o odgovornosti

Grizelj, Anita ; Peh, Zoran

engleski

Discriminant Function Analysis of Miocene pelitic sediments from the Southwestern Part of the Pannonian Basin System, Croatia

Fifty-two samples of Miocene (Ottnangian-Pontian) pelitic sediments taken from outcrops on the Medvednica, Moslavačka and Psunj Mts., and wells in the Sava Depression and the Požega Sub- deperession were investigated. These sediments are originated in different marine, marine with reduced salinity, brackish, and freshwater environments depending on the Pannonian Basin development (Pavelić, 2005). Multiple discriminant analysis of Miocene pelitic sediments of the SW portion of the Pannonian Basin System was performed in order to determine the optimum criteria for separating the previously defined environments of sedimentation. The major elements (SiO2, Al2O3, Fe2O3, MgO, CaO, Na2O, K2O, TiO2, P2O5 and MnO) and trace elements (La, Y, Hf, Cr, Zn, Sc, Zr, Th, Ga, Rb, Ce, Ni, Pb, Cu, V, As and Mn) are employed as independent variables, or descriptors, in the process of discrimination. Results of analysis have established a clear and strong association between characteristic chemical elements in pelitic sediments and their affinity with sedimentary environments. Beside differences between sedimentary environments, the chemical composition of sediments is a consequence of mineralogical composition and provenances. DF1 function separates sediments deposited in freshwater and marine environments from those in brackish and marine environments with reduced salinity which contains higher content of CaO. Freshwater and marine groups of sediments contain elements associated with higher content of terrigenous component such as Fe2O3, Al2O3, K2O, SiO2, TiO2 and Na2O. Key elements indicating provenance such as Th, La, Sc, Cr, Ni, those indicating oxidative-reductive conditions of sedimentation such as Mn, Ce, V, Cu, as well as elements including Y, Hf, Zn, Zr, Rb, Ga, As, Pb, being characteristic for some minerals (Taylor & McLennan, 1985 ; Cullers, 2002), were used in discriminate analysis based on trace elements. DF1 function strictly separates freshwater sediments enriched in all trace elements from brackish, marine with reduced salinity, and marine sediments. DF2 function separates marine sediments enriched in all trace elements except Cu and As which are incorporated in brackish sediments while less in freshwater, and sediments from the marine environment with reduced salinity. As and Cu are elements exclusively associated with terrigenous component and are partially correlated with SiO2, Al2O3, Fe2O3, TiO2 and P2O5 (Grizelj, 2008). This relationship between groups is in line with the differences defined by the major elements. Discriminant analysis based on the environment criterion is consistent with the analyses based on stratigraphic affiliation.

Discriminant function analysis; sedimentary environments; major elements; trace elements; Miocene; Pannonian Basin System

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Podaci o prilogu

28-29.

2014.

objavljeno

Podaci o matičnoj publikaciji

Abstract

Babek, Ondrej ; Matys Grygar, Tomaš ; Uličny, David

Olomouc: Palacky University, Olomouc

Podaci o skupu

Central European Meeting of Sedimentary Geology

poster

09.06.2014-13.06.2014

Olomouc, Češka Republika

Povezanost rada

nije evidentirano