The authors compared the distribution of stable O and C isotopes and elements Sr, Mn, Ca and Na in Triassic platform carbonates of the Veterlin Unit in the Male Karpaty Mts., with the aim of characterizing the conditions of post-sedimentary evolution as well as their importance for the characterization of sedimentation conditions. The results have shown that solutions of meteoric origin did not affect to a more important extent the development of the studied limestone sequences. The values of ä¹³C are predominantly positive (-0.7 to + 3.6 %0 PDB). ä¹⁸0 are in the whole set shifted towards negative values reflecting thus a temperature increase of diagenetic solutions in buried sediment. The highest ä¹³C values have been determined in limestones of depressions (-2.5 to -2.2 %0 PDB), with a shift towards more negative values in inner platform limestones as well as in reef margin limestones. In a part of the studied samples, high ä¹³C have been preserved, indicating, together with high Sr contents and the presence of aragonite relic in calcites, aragonite mineralogy of the original sediment. Since the influence of meteoric solutions in the (early)diagenetic process was not marked, the distribution of microelements (Sr) reflects gradual changes of the sedimentation environment conditions.