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Weathering in Surface Horizons of Illinois Soils
Author(s) -
Jones Robert L.,
Beavers A. H.
Publication year - 1966
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1966.03615995003000050025x
Subject(s) - loess , soil water , weathering , geology , soil horizon , soil science , geomorphology , earth science , hydrology (agriculture) , geotechnical engineering
Lines analogous to isohyets were drawn with respect to molar ratios of CaO, K 2 O, and Fe 2 O 3 to ZrO 2 . The resulting maps demonstrate the close relationship of loess thickness to intensity of soil development and identify a north‐south band of soils in southern Illinois that are the most intensely weathered soils in the state. The youngest or least developed soils identified by the lines occur in thick loess deposits of extreme northwestern Illinois. Isoweathering lines cannot be drawn in the area of Wisconsin drift because of the penecontemporaneity of loess on the drift and many local sources within the drift sheet area.