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The AAPG/Datapages Combined Publications Database
Journal of Sedimentary Research (SEPM)
Abstract
A Mineralogical Study of Loess Near St. Charles, Missouri
Rosalie T. Oefelein
ABSTRACT
A mineralogical study of an exposure of buff loess overlying gray loess near St. Charles, Missouri, indicates that the buff loess was produced by the weathering and oxidation of the gray loess, and that the difference in color is due chiefly to the greater amount of iron oxide and iron rich beidellite in the buff than in the gray loess. A comparison of this loess deposit with the profile of weathering described by Leighton and MacClintock as developed on the till deposits of Illinois indicates that this exposure of loess is an example of a youthful profile of weathering developed on loess.
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