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  • Geological disasters in loess areas during the 1920 Haiyuan earthquake, China
  • monitoring are separated from those criteria which are typical of the natural evolution of organic matter on the geological timescale.
  • The purpose of this study was to determine the facies of sand sediment from Quaternary geological profiles in the Nyírség area in North Hungary, and compare the results of the traditional grain-shape examination procedures with those of the scanning