STRUKTURY IŁÓW POZNAŃSKICH W OBSERWACJACH MIKROSKOPOWYCH JAKO WSKAŹNIKI POLIGENEZY OSADÓW
Abstract
MICROFABRIC OF THE POZNAŃ CLAYS IN MICROSCOPIC STUDIES AS THE INDICATION OF THE POLYGENETIC ORIGIN OF SEDIMENTS
Abstract. This paper presents microfabric of the Poznañ clays in microscopic investigations. The method allows describing the structures after plant roots, Fe-Mn globules, calcareous and siderite concretions, voids after “desert roses” microcrystallites, as well as slickensides. These features are of primary and secondary origin and indicate multistage formation of the studied sediments and polygenenetic processes in their geological history. Root remnants, and slickensides indicate pedogenesis, while microcrystallites, Fe-Mn globules and calcareous concretions were formed during the changes of physical and chemical conditions during weathering processes.
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