Textural Pedofeatures and Pre-Hadrian's Wall Ploughed Paleosols at Stanwix, Carlisle, Cumbria, U.K.

Illuviation intensity and land use change: Quantification via micromorphological analysis

“…They are also due to clay illuviation but as they may contain a low amount of silt-sized particles (Jamagne et al, 1987) and as they have a medium to poor orientation (Fedoroff, 1997), they are more related to successional patterns of deposition and concentration in soils affected by a change in internal drainage (Adderley et al, 2010). Even if it is still under discussion (Adderley et al, 2010;Goldberg and Macphail, 2006;Usai, 2001), dusty clay coatings are generally associated with cultivation (Brammer, 1971;Gebhardt, 1988) and agric horizons (Stoops and Vepraskas, 2003;WRB, 2014) whereas the limpid ones are related to unexposed soils with a permanent vegetation cover (Fedoroff, 1997). Papules (i.e., fragments of clay coatings (Brewer, 1964)) are observed regularly all along both profiles (Fig.…”

Microscopic Examination of Ancient and Modern Irrigated Paddy Soils in South Korea, with Special Reference to the Formation of Silty Clay Concentration Features

“…This paper describes a number of particular pedogenic features that are repeatedly observed in ancient rice paddy soils at these two sites and one modern example of a contemporary paddy field soil from Yongjeong (Yongjung), Cheonan for comparison. Interpretations of ancient agricultural practices are based on previous micromorphological research on ancient agricultural soils discussed above and analogy with pedofeatures produced by modern agricultural techniques and experiments (Gebhardt, , ; Simpson, ; Usai, ; Pagliai, Vignozzi, & Pellegrini, ; Goldberg & Macphail, ).…”

Degradación ambiental en el valle Teotihuacan: evidencias geológicas y paleopedológicas

“…En algunos poros se encuentran películas de iluviación, heterogéneas, ya que además de la arcilla, contienen limo y humus, que les brinda un color oscuro (Figura 10b). Estos rasgos se conocen como agrocutanes y se forman en suelos cultivados (tanto en el pasado como actualmente) (Usai, 2001). …”