Résultats de la recherche (12 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • A method for the study of Quaternary environmental evolution of the Loess Plateau in China
  • A method for obtaining quantitative information on palaeoenvironmental evolution from the loess stratum is approached in this paper with the study of the geochemical behaviour of ferric oxide and the ecological characteristics of the vegetation.
  • Processes in soils and paleosoils. A new method for the study of weathering
  • to the mineral's origin and can be used as a source of information when soil-forming processes are studied.
  • Paleolithic archeology and the paleogeographical study of loess-paleosol sequences in Eastern Europe
  • A complex method is suggested for the study of surfaces of sand grains. With this method, middle- and late Pleistocene loess-palaeosol sequences of the Russian Plain, Dnieper Basin, were studied. During deposition of loess layers predominantly
  • Based on phylogenetical, palaeoecological and biostratigraphical studies on the Holocene malacofauna of Hungarian medium high mountains and flatlands, four faunal periods could be recognised in the mountains, while three ones on the flat regions
  • Molluscs, collected from loess and loess-like profiles of Hungary by a method developed for high resolution stratigraphic studies, were statistically evaluated for a palaeoenvironmental reconstruction. Species were ranged according to 4 important
  • Paleosols of various age from the Russian Plain and Western Siberia were studied for their humus composition and physico-chemical properties. The permanent features of humus in paleosols useful for paleogeographical reconstruction and geoecological
  • Most data about fossil cryogenic phenomena relates to the Late Pleistocene. The presence of a particular cryogenic phase within the Pleistocene was established. This is connected with the strongest cooling periods during the Quaternary. Study
  • 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
  • The A. investigates the applicability of granulometric indices for the reconstruction of past environments. This paper concentrates primarily on the study of variation in the vertical profile of deposits. Along with other indices, fineness grade
  • Based on the non-diachronic nature of loess-paleosol sequences, a paleosol dating method is suggested. The origin of the modern Yellow River drainage system is studied. Correlation of loess, paleosol, and aquatic sediment sequences of China
  • The study area was selected with consideration to the fact that there stripes of (sandy) loess alternate with blown sand areas and this circumstance allows the contrasting of the properties of soils developed on the two parent materials of different