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THE CHARACTERISTICS AND GENESIS OF A FERRITIC BROWN EARTH
Author(s) -
STORRIER R. R.,
MUIR A.
Publication year - 1962
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1962.tb00706.x
Subject(s) - weathering , goethite , loam , siderite , geology , mineralogy , clay minerals , iron oxide , geochemistry , soil science , soil water , chemistry , materials science , metallurgy , pyrite , organic chemistry , adsorption
Summary The surface soil of the Banbury clay loam is a moderately to slightly acid, wellstructured, brown to reddish‐brown, clay loam. With depth both structure and texture become coarser; the lower (B) horizons are characterized by a stone line, probably resulting from frost action. The profile examined shows no evidence of contamination by extraneous material. Weathering has taken place in situ and the clay minerals are derived from the parent material. The sequence of soil formation appears to be: chemical weathering of the solid rock with the conversion of siderite and chamosite to goethite followed by physical breakdown of the rock and redistribution of iron among the different particle size fractions. The latter is caused by mobilization, translocation, and flocculation of iron oxide, particularly in the coarser clay fraction and most noticeably in the (B) 2 , horizon. Iron has also been lost from the soil.