The results of this study suggest that detailed analyses of episodic alluvial and aeolian loess deposits and paleosols may yield important information on age of paleosols and paleoclimates that persisted during the time of their development.
A succession of sediments and paleosols near Dreihausen records a normal magnetic remanence throughout and appears to have formed during the Bruhnes Chron. The paleosols contain argillic horizons which formed largely during interglacial periods when
climate was wetter and warmer than today. The paleosol data support a strong (i.e. Wetter-Warmer) paleoclimate during the Eemian with a vegetation similar to today, but perhaps acting over a longer period of time.
Extractable Fe and Al in late Pleistocene and Holocene paleosols on Niwot Ridge, Colorado Front Range
Colorado ; Etats-Unis ; Front Range ; Géochimie ; Géographie physique ; Lessivage ; Paléo-environnement ; Paléosol ; Quaternaire
Extractable Fe and Al distributions in surface and buried paleosols suggest that leaching is more pronounced in the older paleosols with a considerable difference in soil-forming environment between Pleistocene interstadial, later Pleistocene
, and postglacial paleosols. There is no evidence that the Na-pyrophosphate extractable Fe and Al were affected by degradation of organic matter following burial| however, the data suggest that some amorphous Fe and Al might have been affected by soil water movement
Sedimentary petrographic study of tephra, glacial and aeolian grains in a quaternary paleosol. Sequence on Mount Kenya, East Africa
Eolien ; Glaciaire ; Géographie de l'Afrique ; Interglaciaire ; Kenya ; Microstructure ; Mount Kenya ; Paléo-environnement ; Paléosol ; Pétrographie ; Quartz ; Quaternaire ; Sédimentaire ; Tephra ; Volcanisme
Etude par microscopie électronique des grains d'origine volcanique, éolienne et glaciaire d'une séquence de paléosols. La comparaison des dépôts d'altération dans les deux paléosols indique que les conditions de précipitation et de drainage étaient
très différentes au cours de la formation de ces deux paléosols interglaciaires. Les différences pédologiques reflètent les différences lithologiques qui, elles mêmes, résultent des différences de météorisation et des interactions entre les différentes