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				  The most important part of the coal-bearing Carboniferous series is the Lublin formation (Lublin beds) (Westphalian A and B), where the main multi-seam coal deposits occur. Westphalian B is represented by a limnic series with are irregularly formed horizons of freshwater faunal. 				 The paper presents the characteristics of horizons containing the remains of freshwater faunal from the boreholes: Borowo, Syczyn 7, Kulik, Kopina 1 (LCB). 				 These horizons build claystones with layers or clay siderite concretions. 				 For the analyzed horizons the content of the following elements: U, Th, V, Cr, Rb, K (ICP-MS) and oxides: Al 2 O 3 , SiO 2 , P 2 O 5 , K 2 O, MgO, CaO, Na 2 O, K 2 O, MnO, TiO 2 , Cr 2 O 3  (XRF) were determined. The most commonly ratios used in the identification of palaeoenvironment sedimentary were calculated (Th/U, Th/K 2 O, V/Cr, P 2 O 5 /Al 2 O 3 , Rb/K). 				 It was found that the content of elements U, Th, V, Cr, Rb K showed very similar values for claystones from borehole: Borowo, Syczyn 7, Kulik, while the sample from borehole Kopina 1 clearly lower value was observed. 				 The research for all samples showed that those ratios such as: U, Th, Th/U, P 2 O 5 /Al 2 O 3 , V/Cr, Rb/K may be used to identify sedimentary environment and to geochemical correlations of the sedimentary rock sequences in the LCB.

Geochemical Characterization of the Freshwater Faunal Horizons of the Lublin Formation from the Lublin Coal Basin