Ocena przydatności metody bibułowej chromatografii rozdzielczej w seryjnych badaniach litologicznych osadów iłowych

Abstract

USEFULNESS OF PAPER PARTITION CHROMATOGRAPHY IN THE ROUTINE LITHOLOGICAL EXAMINATIONS OF CLAY ROCKS Summary Paper partition chromatography was used to reveal the quantitative variations in the concentrations of Fe+3, Mn+2, Ca+2, and Al+3 cations in clay sediments. The following deposits were chromatographically examined: the Pleistocene, the whole succession of the Late Neogene clay sediments i.e. the “Poznań clays” and their basal beds representing the intermediate links between the clay sediments and the. Miocene series of sands and brown coal. A total number of 658 samples from bore-holes and exposures were examined. The results of 5922 chromatographic tests have shown a wide range of concentrations of the cations examined. A quantitative analysis of four selected cations has revealed: a) their quantitative differentiation in rocks differing as to their ages b) their constant amounts in samples front the same horizon from different bore-holes sometimes situated far apart from each other. On the basis of the varying concentrations of the cations the stratigraphical boundaries within the Upper Neogene have been established. They show that the Late Neogene can be divided into three divisions. The boundaries established by chromatographic methods separate the Pleistocene from the Upper Pliocene, the Upper Pliocene from the Lower, the Lower Pliocene from the Mio-Pliocene, and the Mio-Pliocene from the Miocene. The results obtained indicate the chromatographic method to be a very sensitive one and suitable for examining clay rocks.