... a slight reduction in theCEC of clay and a striking increase in free iron content ... processes, i.e. crystalline free iron content increase, clayneo-genesis and ... whilevermiculite and kaolinite content, total iron, chromium and lead distinguished ...
... archaeological monuments (kurgans) of Bronze, Early Iron and Middle Ages was carried ... Early Iron Age (I millennia BC - IV century AD) was characterized by alternating of ...
... 3 iron-oxide concretions and a number of undisturbed tubelike iron-oxid bodies occur ... iron ores"), which were formed in the upper part of Go horizons by accumulation of ...
... Underneath follow brown, red and purple-reddish "Hunsr ck iron stones", then an oxidation zone s.str. over the reduction zone of the more or less fresh slates.and on Devonian slates between the north-eastern Eiffel and the Lower Rhine embayment south of ...
... Pedogenesis has produced iron segregation that was formed into a great variability ... Crack and fractures have been filled by iron oxide either by kaolinite or hematite. ...
... iron oxide degrees were 59.07% and 47.50% respectively, and the dominant clay minerals were hydromica, vermiculite and ... There is no obvious difference in total iron and free iron content among Quaternary red earth profile. ...
... in the NE part of the region where they are accompanied by iron illuviation ... as horizonation, calcium carbonate deposition, iron oxides release and accumulation ... floods there is an increase of iron and scandium with corresponding decreases in ...