Charakterystyka litologiczna i skład mineralny iłów poznańskich w rejonie Turka
Abstract
LITHOLOGICAL CHARACTERISTICS AND MINERAL COMPOSITION OF THE POZNAŃ CLAY IN THE TUREK REGION
Summary
Lithology, development and mineral composition of Tertiary Poznan clays from the Turek area are discussed. In comparison with other sites of Poznań clays in the Turek area these clays are developed as an alternation of beds differing in grain-size distributions. In the vertical section, 5 layers of clays and 4 layers of silts intercalating them are distinguished. The variability in grain-size distribution is accompanied by variability in mineral composition. In silt layers, quartz is the predominating mineral component, whereas montmorillonite, illite, kaolinite and feldspars are of secondary importance. The clay layers consist of a mixture of day minerals, in which montmorillonite with co-occurring kaolinite and illite predominate, whereas quartz and carbonates occur in smaller amounts. The high, ca. 50-60 per cents, montmorillonite content of the Poznań clays from the Turek area promise their industrial utilization, because these deposits are exploited as blanket deposits of brown-coal ,,Adamów" strip-mine.
Summary
Lithology, development and mineral composition of Tertiary Poznan clays from the Turek area are discussed. In comparison with other sites of Poznań clays in the Turek area these clays are developed as an alternation of beds differing in grain-size distributions. In the vertical section, 5 layers of clays and 4 layers of silts intercalating them are distinguished. The variability in grain-size distribution is accompanied by variability in mineral composition. In silt layers, quartz is the predominating mineral component, whereas montmorillonite, illite, kaolinite and feldspars are of secondary importance. The clay layers consist of a mixture of day minerals, in which montmorillonite with co-occurring kaolinite and illite predominate, whereas quartz and carbonates occur in smaller amounts. The high, ca. 50-60 per cents, montmorillonite content of the Poznań clays from the Turek area promise their industrial utilization, because these deposits are exploited as blanket deposits of brown-coal ,,Adamów" strip-mine.